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    1 Versions 0.1 - 0.57 - Liviu Lalescu
    2 - Versions 0.1 - 0.57 - no user interface, plenty of bugs.
    3 -------------------------------------------------------------------------------
    4 Versions 1.0 - 1.17 - Liviu Lalescu
    5 - Version 1 and above - added text menu.
    6 - Version 1.5 and above - added Qt GUI.
    7 - Version 1.8 and above - removed the text menu :-)
    8 - Version 1.12 - used valgrind to track down an annoying crashing bug. Thanks!
    9 	This was not the only time I used valgrind to hunt for bugs
   10 -------------------------------------------------------------------------------
   11 Versions 2.0 - 2.6 - Liviu Lalescu
   12 - Version 2.0 and above - better Qt GUI.
   13 - Version 2.1
   14 - Version 2.2
   15 - Version 2.3 - added conflicts reporting.
   16 - Version 2.4 - made a separate list for subjects (not depending on teacher).
   17 - Version 2.5 - crash bugs fixed.
   18 - Version 2.6 - crash bugs fixed.
   19 -------------------------------------------------------------------------------
   20 Versions 2.7.0 - 2.7.8 - Liviu Lalescu
   21 - Version 2.7.0 - added CHRActivitiesNotSameDay;
   22 	- added split activities (for high-schools);
   23 	- changed numbering of the versions (Carsten's suggestion).
   24 - Version 2.7.1 - added CHRTeachersNoMoreThanXHoursContinuously.
   25 - Version 2.7.2 - implemented menu item Timetable/Show(teachers) (shows the the timetable for a certain teacher).
   26 - Version 2.7.3 - user can change the number of hours and days;
   27 	- list of activities - fixed bug in the interface.
   28 - Version 2.7.4 - improved the add custom hard restriction and add custom soft restriction dialogs;
   29 	- allowing to split an activity in two ways: daily exclusion or no daily exclusion;
   30 	- added CHRTeachersSubgroupsNoMoreThanXHoursDaily (no teacher can teach to a subgroup more than x hours daily) - to be checked thoroughly;
   31 	- added the possibility to record a position of the simulation on the hard disk and the subsequent retrieval.
   32 - Version 2.7.5 - bug fixes in activities form.
   33 - Version 2.7.6 - bug fix in load recorded position.
   34 - Version 2.7.7 - small bug fixes.
   35 	- the main engine, interface and intermediate objects are now placed in separated directories
   36 - Version 2.7.8 - small improvement in students view timetable form
   37 	- now, the user can click on the table to see details about the activity
   38 -------------------------------------------------------------------------------
   39 Versions 2.8.0 - 2.8.5 - Liviu Lalescu
   40 - Version 2.8.0 - bug fixes
   41 	- added CSRActivityPreferredTime (user may specify for each activity a preferred
   42 	time) - (suggested by Sajith V. K.)
   43 - Version 2.8.1 - bug fixes
   44 - Version 2.8.2 - added CHRActivitiesSameTime (idea by Sajith V. K., to handle activities
   45 	having more teachers or more groups from different years. This can be done
   46 	using dummy groups or dummy teachers).
   47 	- increased the number of split activities to 8 in the GUI.
   48 	- now, any unallocated activity has weight 10000.
   49 - Version 2.8.3 - bug fix - GUI restriction CHRTeacher(Year, Group, Subgroup)NotAvailable
   50 	corrected, by enabling the day and hour.
   51 - Version 2.8.4 - small changes in the interface.
   52 - Version 2.8.5 - changed the name to FET (or fet)
   53 	- added break periods (with CHRBreak)
   54 -------------------------------------------------------------------------------
   55 Versions 2.9.0 - 2.9.6 - Liviu Lalescu
   56 - Version 2.9.0 - bug fix in ConstraintStudentsYearNotAvailable
   57 	- changed Restriction into Constraint, now you can implement any constraint
   58 	as compulsory or not
   59 - Version 2.9.1 - small crash bug fixed (when erasing a year and pressing Cancel)
   60 	- added ConstraintActivitiesNotSameTime
   61 - Version 2.9.2 - bug fix when reading constraints (thanks to Ian Fantom, Marc Falcon)
   62 - Version 2.9.3 - bug fix when reading constraints (thanks to Michael Towers)
   63 - Version 2.9.4 - lots of bug fixes (thanks to Michael Towers)
   64 - Version 2.9.5 - bug fix, new activity is added with correct index
   65 - Version 2.9.6 - bug fixes
   66 -------------------------------------------------------------------------------
   67 - Version 2.10.0 - Liviu Lalescu
   68 	- bug fixes (maybe added a few new ones :-)
   69 	- FET now uses QString, QValueStack, QDomDocument, QFile and QTextStream classes
   70 	 (Imre Nagy's suggestion).
   71 -------------------------------------------------------------------------------
   72 - Version 3.0.0 pre1 - Liviu Lalescu
   73 	- activities list is now a qt list (QPtrList)
   74 	- constraints list is now a qt list (QPtrList)
   75 	- bug fixes
   76 	- max hours per week is now short integer (instead of char)
   77 	- removed population initialization method from the ini file and added it
   78 	into the GUI
   79 	- made the simulation somewhat faster, by getting rid of function realTimes(i)
   80 - Version 3.0.0 pre2 - Liviu Lalescu
   81 	- subjects, teachers, students are now QPtrList.
   82 	- the file open/saveas dialog now open in working directory
   83 - Version 3.0.0 pre3 - Liviu Lalescu
   84 	- improved speed by modifying a bit the fitness calculation.
   85 - Version 3.0.0 pre4 - Liviu Lalescu
   86 	- improved structure of the output xml files
   87 	- began working at space allocation
   88 -------------------------------------------------------------------------------
   89 Versions 3.1.0 - 3.1.4 - Liviu Lalescu
   90 - Version 3.1.0
   91 	- now the years and groups can have overlapping subgroups (uff)
   92 	- the activities support more than one set of students (year, group or subgroup)
   93 - Version 3.1.1
   94 	- improved speed (instead of 9 seconds, I get now 7 seconds on a test), by
   95 	reducing redundant computations for teachers and students conflicts
   96 - Version 3.1.2
   97 	- space (room) allocation (sigh of relief)
   98 - Version 3.1.3
   99 	- fixed bug when reading ConstraintBreak
  100 	- leak bug fixed, thanks to Valgrind (duplicated constraints were not deleted
  101 	if Rules::addTimeConstraint returned false)
  102 	- bug fix: adding/removing constraints and reading input files resets
  103 	variable Rules::internalStructureComputed to false
  104 	- corrected ConstraintStudentsEarly
  105 - Version 3.1.4
  106 	- improved (very little) ConstraintActivitiesNotSameDay
  107 	- fixed activity bug: comparing 2 activities for equality now works
  108 	- now the user can see whether the activities have daily exclusion or not
  109 -------------------------------------------------------------------------------
  110 Versions 3.2.0 - 3.2.9 - Liviu Lalescu
  111 - Version 3.2.0
  112 	- changed the GUI: the user can see all constituent activities and constraints
  113 	- saving now even basic constraints
  114 	- the GUI now has filters when viewing constraints and activities
  115 - Version 3.2.2
  116 	- fixed compilation issue
  117 - Version 3.2.3
  118 	- corrected small bug in ConstraintActivitiesSameTime and
  119 	ConstraintActivitiesNotSameTime
  120 	- ConstraintActivitiesSameTime now works much better for compulsory constraints.
  121 	I considered that it is better to repair each chromosome so that all
  122 	the compulsory constraints of this type are fulfilled, before evaluating it.
  123 	This change was suggested by an input data file from Ian Fantom,
  124 	which contained a lot of this constraints and the old version was failing
  125 	lamentably.
  126 - Version 3.2.4
  127 	- began internalization (using qtranslator)
  128 	- began Romanian translation
  129 - Version 3.2.5
  130 	- small bug fix
  131 	- improved internalization
  132 	- improved Romanian translation
  133 - Version 3.2.6
  134 	- now, compulsory ConstraintActivityPreferredTime is implemented better
  135 	(as a repairing of the choromosome).
  136 	- improved speed by avoiding two passes through the internal constraints list
  137 	when computing hard and soft fitness (compulsory or non-compulsory conflicts)
  138 - Version 3.2.7
  139 	- Added a FAQ
  140 - Version 3.2.8
  141 	- Made the simulation faster (very little) by getting rid of the logging part
  142 - Version 3.2.9
  143 	- bug fix in ConstraintActivityPreferredTime (thanks to Michael Towers)
  144 -------------------------------------------------------------------------------
  145 Versions 3.3.0 - 3.3.1 - Liviu Lalescu
  146 - Version 3.3.0
  147 	- small bug fixes in the interface
  148 - Version 3.3.1
  149 	- bug fix when reading ConstraintStudentsNotAvailable
  150 -------------------------------------------------------------------------------
  151 Versions 3.4.0 - 3.4.8 - Liviu Lalescu
  152 - Version 3.4.0 (pre1 and pre2)
  153 	- Each activity supports several teachers (3, but this can be easily extended)
  154 	- Now, the default population size is 2048 (Michael Towers's suggestion).
  155 	- Bug fixes in ConstraintTeachersNoMoreThanXHoursContinuously
  156 	- Changed ConstraintStudentsNotAvailable into ConstraintStudentsSetNotAvailable
  157 		changed ConstraintActivitiesSameTime into ConstraintActivitiesSameStartingTime
  158 		changed ConstraintActivitiesNotSameTime into ConstraintActivitiesNotOverlapping
  159 		changed ConstraintStudentsNoWindows into ConstraintStudentsNoGaps
  160 		changed ConstraintTeachersNoWindows into ConstraintTeachersNoGaps
  161 		changed ConstraintStudentsNotTooMuch into ConstraintStudentsMaxDaysLength
  162 - Version 3.4.1 (pre1 and pre2)
  163 	- Improvements in constraints names
  164 	- New constraints
  165 - Version 3.4.2
  166 	- Improvements in constraints names
  167 	- New constraints
  168 - Version 3.4.3
  169 	- Small bug fix in ConstraintStudentsSetNHoursDaily (thanks to Michael Towers)
  170 - Version 3.4.4
  171 	- Made the simulation somewhat faster, by avoiding an unnecessary sorting
  172 	when the evolution method is three-tournament selection
  173 - Version 3.4.5
  174 	- Addings in FAQ
  175 	- Modified the parameters of the genetic algorithm and now FET can deal better
  176 	with broken ConstraintNoGaps (students or teachers).
  177 - Version 3.4.6
  178 	- The user can now modify the population number from the interface
  179 	- The default population size is now 8192
  180 - Version 3.4.7
  181 	- Bug fix, crashing when logging ConstraintStudentsEarly
  182 - Version 3.4.8
  183 	- FET allows now to use two ConstraintMinNDaysBetweenActivities for the same activities
  184 -------------------------------------------------------------------------------
  185 Versions 3.5.0 - 3.5.4 - Liviu Lalescu
  186 - Version 3.5.0
  187 	- Added ConstraintActivityPreferredTimes (suggested by Michael Towers)
  188 	- Added ConstraintStudentsSetIntervalMaxDaysPerWeek (suggested by Simon Getti)
  189 	- Added ConstraintActivityEndsDay (suggested by Michael Towers)
  190 - Version 3.5.1
  191 	- Added an interface to ConstraintActivityPreferredTimes
  192 - Version 3.5.2
  193 	- Bug fix in selecting the first or second best out of three chromosomes (3 tournament)
  194 - Version 3.5.3
  195 	- Bug fix - the maximum number of teachers is now 200, instead of 100 (thanks to
  196 	Gibbon Tamba for reporting this potential bug)
  197 - Version 3.5.4
  198 	- When viewing the timetable, it shows the subject for the students and the
  199 	students for the teachers (suggested by Sajith V. K.)
  200 --------------------------------------------------------------------------------
  201 Versions 3.6.0 - 3.6.7 - Liviu Lalescu
  202 - Version 3.6.0
  203 	- Each room is now represented by name, type and capacity
  204 	- Added ConstraintRoomNotAvailable
  205 	- Added ConstraintTeachersNoMoreThanXHoursDaily
  206 	- Added ConstraintRoomTypeNotAllowedSubjects
  207 - Version 3.6.1
  208 	- Improved the days dialog
  209 	- Improved the hours dialog and added names for the hours. The file structure
  210 	was a bit changed, but you can open older files and save them as new ones.
  211 - Version 3.6.2
  212 	- Small bug fixes in the interface
  213 - Version 3.6.3
  214 	- Small bug fixes in the interface
  215 - Version 3.6.4
  216 	- Small bug fixes in the interface
  217 	- Improved add activity dialog
  218 - Version 3.6.5
  219 	- The days, hours and add activity dialog are now resizeable
  220 - Version 3.6.6
  221 	- Saving of the timetable in xml format is now improved
  222 - Version 3.6.7
  223 	- Small bug fixes in the add activity dialog
  224 ---------------------------------------------------------------------------------
  225 Versions 3.7.0 - 3.7.2 - Liviu Lalescu
  226 - Version 3.7.0
  227 	- Added the number of students for each students set
  228 	- The basic space constraints now include the requirement that each room's capacity
  229 	must be greater or equal to the number of participating students
  230 - Version 3.7.1
  231 	- Small bug fixes
  232 - Version 3.7.2
  233 	- ConstraintTeacherMaxDaysPerWeek
  234 	- small bug fix in the interface (when adding ConstraintStudentsSetIntervalMaxDaysPerWeek,
  235 	the maximum number of days of the spin box is now updated correctly)
  236 ---------------------------------------------------------------------------------
  237 Versions 3.8.0 - 3.8.5 - Liviu Lalescu
  238 - Version 3.8.0
  239 	- Added equipments list
  240 	- Added ConstraintSubjectRequiresEquipment
  241 	- Small bug fixes
  242 - Version 3.8.1
  243 	- Small bug fixes in the interface
  244 - Version 3.8.2
  245 	- Bug fix when reading ConstraintRoomNotAvailable (thanks to Jerome Durand)
  246 - Version 3.8.3
  247 	- Doxygen options bug corrected
  248 	- Got rid of some compiler warnings
  249 - Version 3.8.4
  250 	- Bug fix: Timetable->Allocate rooms->Start/Continue - crashed FET if there was no
  251 	previous Initialization (thanks to Marek Jaszuk)
  252 	- "Time constraint teacher max days per week broken for teacher:
  253 	XY.This increases the conflicts factor with 0" (thanks to Marek Jaszuk)
  254 - Version 3.8.5
  255 	- Bug fix - when restoring the internal state (time or space), without previously saving
  256 	the internal state, FET crashed (thanks to Marek Jaszuk)
  257 	- Improved translation
  258 	- Now you can write the timetable after initialization or loading the internal state,
  259 	without starting the simulation
  260 ---------------------------------------------------------------------------------
  261 Versions 3.9.0 - 3.9.23 - Liviu Lalescu, French translation by Jerome Durand (fetfr@free.fr),
  262 	2 conversion scripts by Jerome Durand and Vimal Joseph.
  263 - Version 3.9.0
  264 	- Bug fix - medium fitness now is shown correctly (no more negative values). Reported
  265 	by Marek Jaszuk.
  266 	- Added a file in the "doc/" directory, explaining how to add/improve translations.
  267 	- Added Constraint2ActivitiesConsecutive (suggested by Ramanathan Srinivasan).
  268 	- Added Constraint2ActivitiesGrouped (suggested by Ramanathan Srinivasan).
  269 	- Added ConstraintActivitiesPreferredTimes (suggested by Vimal Joseph).
  270 	- Modified a bit the organization of translations.
  271 	- Added French translation (by Jerome Durand).
  272 	- Bug fix in ConstraintSubjectRequiresEquipments (non-compulsory constraints
  273 	were considered compulsory).
  274 - Version 3.9.1
  275 	- Small improvement in translations.
  276 	- Small improvement in Help/About form.
  277 	- Added 2 scripts in the "results/" directory to convert the xml results (Jerome Durand, Vimal Joseph).
  278 - Version 3.9.2
  279 	- ConstraintActivitiesSameStartingTime is now separate (in TimeConstraints2) and improved,
  280 	that is you can schedule activities in similar blocks (suggested by Ian Fantom).
  281 	- Small interface improvements.
  282 - Version 3.9.3
  283 	- Bug fix in the add constraint activities same starting time dialog - reported by Ian Fantom
  284 - Version 3.9.4
  285 	- In the add activity dialog, added 3 check boxes so that the user can select only years,
  286 	groups, subgroups or a combination of these.
  287 - Version 3.9.5
  288 	- Improvement of the Help/About form.
  289 - Version 3.9.6
  290 	- Improved the Romanian translation and "Timetable/Export" menu.
  291 - Version 3.9.7
  292 	- Bug corrected - the program now saves correctly the compulsory argument when working
  293 	in another language (suggested by Cristian Gherman).
  294 - Version 3.9.8
  295 	- The possibility to add more teachers pe activity (6), by working on the .xml file
  296 	(suggested by Cristian Gherman).
  297 	- Got rid of old compatibility loading (file rules_compatibility.cpp).
  298 - Version 3.9.9
  299 	- Got rid of some "unused variable" compiler warnings.
  300 	- Modified a bit the README file.
  301 - Version 3.9.10
  302 	- When exiting, the program asks to save the current file (suggested by Nicholas Robinson)
  303 	- Added ConstraintTeacherRequiresRoom (suggested by Nicholas Robinson).
  304 - Version 3.9.11
  305 	- Improved Romanian translation
  306 - Version 3.9.12
  307 - Version 3.9.13
  308 	- Now the fet.ini file is written in the home directory
  309 - Version 3.9.14
  310 	- Small bug fix when writing the default ini file
  311 - Version 3.9.15
  312 	- Small bug fix when writing the default ini file
  313 	- Small bug fix in the conflicts reporting section
  314 - Version 3.9.16
  315 	- When viewing the timetable for teachers, shows also the subjects
  316 	(suggested by Nicholas Robinson).
  317 - Version 3.9.17
  318 	- small doc/FAQ and TODO files modifications.
  319 	- small interface improvements.
  320 - Version 3.9.18
  321 	- fixed some compilation issues.
  322 	- when reading activities with invalid subject, teacher or students, the program does not
  323 	crash anymore (thanks to Morten Piil).
  324 - Version 3.9.19
  325 	- FET now can deal with translations installed in /usr/share/fet/translations/
  326 	 (suggested by Radu Spineanu).
  327 - Version 3.9.20
  328 	- Moved the directory "results" to "~/.fet/results"
  329 - Version 3.9.21
  330 	- The conflicts are now saved in a file ("time_conflicts.txt" and 
  331 	 "space_conflicts.txt") - suggested by Sebastian Canagaratna.
  332 	- Now, saving the internal state works correctly in Debian - reported by
  333 	Sebastian Canagaratna.
  334 - Version 3.9.22
  335 	- The internal state and the exported timetables are now saved in files named after the 
  336 	.xml input file, to allow multiple simulations (suggested by Sebastian Canagaratna).
  337 	- Saving now the timetable in .xml and .html models (suggested by Cristian Gherman).
  338 - Version 3.9.23
  339 	- The user can view the timetable (and saving to html works) for students and teachers
  340 	showing also the rooms (suggested by Sebastian Canagaratna).
  341 	- The space allocation is somewhat faster, by getting rid of the logging part and an 
  342 	unnecessary sorting.
  343 ---------------------------------------------------------------------------------
  344 Versions 3.10.0 - 3.10.5 - Liviu Lalescu
  345 - Version 3.10.0
  346 	- Added ConstraintMinimizeNumberOfRoomsForStudents (suggested by Sebastian Canagaratna)
  347 - Version 3.10.1
  348 	- Bug fix - ConstraintMinimizeNumberOfRoomsForStudents is now showed correctly.
  349 	- Small bug-fixes.
  350 	- Improvements in the interface.
  351 - Version 3.10.2
  352 	- Improvements in space allocation (now compulsory ConstraintTeacherRequiresRoom 
  353 	works by repairing)
  354 	- Added ConstraintActivityPreferredRoom (suggested by Sebastian Canagaratna)
  355 - Version 3.10.3
  356 	- Improvements in the interface (the user can now modify the information about
  357 	the students).
  358 - Version 3.10.4
  359 	- Improvements in the interface (the user can now modify the information about
  360 	the activities).
  361 - Version 3.10.5
  362 	- Small bug fix in the interface
  363 ---------------------------------------------------------------------------------
  364 Versions 3.11.0 - 3.11.6 - Liviu Lalescu
  365 - Version 3.11.0
  366 	- Improved the interface - Data / time constraints
  367 - Version 3.11.1
  368 	- Improved the interface (bug fix, improvements)
  369 - Version 3.11.2
  370 	- Bug fixes
  371 - Version 3.11.3
  372 	- Improvements in the interface (edit equipments, rooms)
  373 	- Bug fixes (space constraints)
  374 - Version 3.11.4
  375 	- Bug fixes (basic time & space constraints can now be non-compulsory)
  376 	- Improved the interface (space constraints)
  377 - Version 3.11.5
  378 	- Bug-fixes
  379 - Version 3.11.6
  380 	- Improved Romanian translation
  381 ---------------------------------------------------------------------------------
  382 Versions 3.12.0 - 3.12.32 - Liviu Lalescu, 
  383 	French translation by Jerome Durand (fetfr@free.fr),
  384 	Catalan translation by Miguel Gea Milvaques, 
  385 	Malay translation by Abdul Hadi Kamel.
  386 - Version 3.12.0
  387 	- The user now has the possibility to choose only one phase allocation 
  388 	(for difficult space constraints)
  389 - Version 3.12.1
  390 	- Improvements in the interface
  391 - Version 3.12.2
  392 	- Bug fixes
  393 - Version 3.12.3
  394 	- Bug fixes
  395 	- Added ConstraintActivitiesSameStartingHour (suggested by Sebastian Canagaratna)
  396 - Version 3.12.4
  397 	- Added a field named "subject tag" (suggested by Abdul Hadi Kamel)
  398 - Version 3.12.5
  399 	- Bug fixes
  400 - Version 3.12.6
  401 	- Small bug fixes in the interface
  402 - Version 3.12.7
  403 	- Small improvements in the interface
  404 - Version 3.12.8
  405 	- Improved Romanian translation (bug reported by Cristian Gherman)
  406 - Version 3.12.9
  407 	- Modified the Help/About and Help/FAQ forms
  408 - Version 3.12.10
  409 	- Small improvement in the Help/About form
  410 - Version 3.12.11
  411 	- Small improvement in the Help/About form
  412 	- Bug fixes (subject tags)
  413 - Version 3.12.12
  414 	- Small improvement in the Help/FAQ form
  415 - Version 3.12.13
  416 	- Bug fix (constraint subject requires equipments now works correctly)
  417 	- Bug fix (reading activities)
  418 - Version 3.12.14
  419 	- Modified the constraint subject requires equipments
  420 	- Added ConstraintSubjectSubjectTagRequiresEquipments
  421 - Version 3.12.15
  422 	- Small bug fixes in the interface
  423 - Version 3.12.16
  424 	- Small bug fixes in the interface
  425 - Version 3.12.17
  426 	- Improved the Help/About form (included the sponsors tab)
  427 	- Added a file named SPONSORS
  428 	- Modified the file format (*.fet, and added a <!DOCTYPE FET> tag and so on)
  429 	- Added the institution name and comments
  430 - Version 3.12.18
  431 	- Small bug fix
  432 - Version 3.12.19
  433 	- Small improvements in the interface
  434 - Version 3.12.20
  435 	- Small improvements and bug-fixes
  436 - Version 3.12.21
  437 	- Small improvements
  438 	- The language is now saved in the configuration file
  439 - Version 3.12.22
  440 	- Small improvements
  441 - Version 3.12.23
  442 	- Small improvement in the Romanian translation
  443 	- Updated the French translation (Jerome Durand)
  444 - Version 3.12.24
  445 	- Small update in the FAQ
  446 - Version 3.12.25
  447 	- The teachers' timetable now contains a subject tag
  448 	- Bug fix - when the time constraints are invalid, the user is presented the problem 
  449 		- reported by Sebastian Canagaratna
  450 - Version 3.12.26
  451 	- Small improvement in the interface
  452 - Version 3.12.27
  453 	- Small improvement in the interface
  454 - Version 3.12.28
  455 	- Small bug fix when renaming a year or group (reported by Hadi Kamel)
  456 	- Bug fix when erasing activities
  457 - Version 3.12.29
  458 	- Small bug-fixes
  459 	- Added ConstraintActivitiesSameRoom and ConstraintActivityPreferredRooms (suggested
  460 		by Sebastian Canagaratna)
  461 - Version 3.12.30
  462 	- Added Catalan translation (thanks to Miguel Gea Milvaques)
  463 - Version 3.12.31
  464 	- The activities dialog now contains a subject tag filter
  465 	- Important bug fixes in the constraints same starting time, same starting hour and same room
  466 - Version 3.12.32
  467 	- Added Malay translation (thanks to Abdul Hadi Kamel)
  468 ---------------------------------------------------------------------------------
  469 Versions 3.13.0 - 3.13.8 - Liviu Lalescu, 
  470 - Version 3.13.0
  471 	- Added ConstraintSubjectSubjectTagPreferredRoom(s) and ConstraintSubjectPreferredRoom(s)
  472 	(suggested by Abdul Hadi Kamel).
  473 	- Improved the conflicts reporting for space constraints (now, it keeps track of
  474 	the parity).
  475 	- Various bug fixes.
  476 - Version 3.13.1
  477 	- Small improvement in speed.
  478 - Version 3.13.2
  479 	- Small bug fixes.
  480 	- Added the possibility to lock activities when viewing the timetable (suggested by Abdul Hadi Kamel).
  481 - Version 3.13.3
  482 	- Possibility to fix only time or space (suggested by Abdul Hadi Kamel).
  483 	- Small bug-fixes.
  484 - Version 3.13.4
  485 	- Small improvement (the program does not crash anymore if there are more activities, constraints, etc.
  486 	 than the maximum allowed).
  487 - Version 3.13.5
  488 - Version 3.13.6
  489 	- Bug fix - memory leakage fixed.
  490 - Version 3.13.7
  491 	- Now the selected language has a check mark near it.
  492 - Version 3.13.8
  493 	- Small bug fix (when adding a new ConstraintActivityPreferredTime).
  494 ---------------------------------------------------------------------------------
  495 Versions 3.14.0 - 3.14.21
  496 	- Liviu Lalescu, 
  497 	- Polish translation by Radoslaw Pasiok,
  498 	- Malay translation update by Abdul Hadi Kamel.
  499 - Version 3.14.0
  500 	- Now each activity's description includes the directly related constraints.
  501 	(suggested by Abdul Hadi Kamel)
  502 - Version 3.14.1
  503 	- Bug fix.
  504 - Version 3.14.2
  505 	- When quitting, the save file message box has default on "Yes".
  506 	- Now, the teachers and subjects form shows also the related constraints.
  507 	- Various small bug-fixes.
  508 - Version 3.14.3
  509 	- Now, the subject tags form shows also the related constraints.
  510 - Version 3.14.4
  511 	- Now, the students sets, rooms and equipments forms show also the related constraints.
  512 - Version 3.14.5
  513 	- Small bug fix (when showing related constraints for students sets).
  514 - Version 3.14.6
  515 	- Added ConstraintTeachersSubjectTagsMaxHoursContinuously (suggested
  516 	by Abdul Hadi-Kamel).
  517 - Version 3.14.7
  518 	- Added ConstraintTeachersSubjectTagMaxHoursContinuously (suggested
  519 	by Abdul Hadi-Kamel).
  520 	- Small bug fix.
  521 - Version 3.14.8
  522 	- Bug fix (thanks to Sebastian Canagaratna).
  523 - Version 3.14.9
  524 	- MAX_YEARS is now 100.
  525 	- Small improvement in the code.
  526 - Version 3.14.10
  527 	- Small bug fix.
  528 - Version 3.14.11
  529 	- Improved population size dialog.
  530 	- Improved the name of 3 constraints
  531 		(ConstraintTeachersNoMoreThanXHoursDaily is now ConstraintTeachersMaxHoursDaily,
  532 		ConstraintTeachersNoMoreThanXHoursContinuously is now ConstraintTeachersMaxHoursContinuously and
  533 		ConstraintTeachersSubgroupsNoMoreThanXHoursDaily is now ConstraintTeachersSubgroupsMaxHoursDaily)
  534 - Version 3.14.12
  535 	- Small bug fix and improvement in modify activity dialog
  536 - Version 3.14.13
  537 	- Improved "Save as" dialog.
  538 - Version 3.14.14
  539 	- Now, special characters <, >, ', " and & are handled correctly in names 
  540 	(bug reported by Frans de Bruijn)
  541 	- Code readability improvement (instead of getXMLDescription, now it is getXmlDescription)
  542 - Version 3.14.15
  543 	- Improved ConstraintActivitiesPreferredTimes, to include also a subject tag.
  544 	- Bug fix in ConstraintActivitiesPreferredTimes.
  545 	- Improvement when saving a ConstraintActivitiesPreferredTimes.
  546 - Version 3.14.16
  547 	- Bug fix (when viewing the timetable).
  548 - Version 3.14.17
  549 	- Added Polish translation (by Radoslaw Pasiok).
  550 - Version 3.14.18
  551 	- Updated Malay translation (by Abdul Hadi Kamel).
  552 - Version 3.14.19
  553 	- Bug fix (in ConstraintStudentsSetNotAvailable) - thanks to Daan Huntjens
  554 	Corrected with the help of Valgrind.
  555 - Version 3.14.20
  556 	- Bug fix in modify constraint activities not overlapping and modify
  557 	constraint min n days between activities.
  558 - Version 3.14.21
  559 	- Small bug fixes (when showing the conflicts, now the hours are shown properly).
  560 ---------------------------------------------------------------------------------
  561 Versions 3.15.0 - 3.15.4
  562 	- Liviu Lalescu,
  563 	- constraints and constraints subtags help files by Daniel S.
  564 - Version 3.15.0
  565 	- When adding or modifying an activity, the dialog contains a list box for teachers and
  566 	students, allowing as many as needed (suggested by Dragos Petrascu).
  567 	- Changes in the way of viewing the generated timetables (suggested by Scott Sweeting).
  568 	- Bug fix: saving the timetables in html and xml corrected to handle special characters
  569 	like <, >, & etc.
  570 	- Added ConstraintTeacherSubjectRequireRoom (suggested by Scott Sweeting).
  571 - Version 3.15.1
  572 	- Clear buttons in AddActivity and ModifyActivity now work correctly.
  573 - Version 3.15.2
  574 	- Added help files and help menu for constraints and constraints subtags (by Daniel S).
  575 	- Added Constraint2ActivitiesOrdered (suggested by Gianluca Salvo).
  576 - Version 3.15.3
  577 	- Time allocation now generates a .html file for students timetable ordered by
  578 	students subgroup and days and hours.
  579 - Version 3.15.4
  580 	- Bug fix - the interface now only permits MAX_TEACHERS_PER_ACTIVITY (currently 6)
  581 	for an activity.
  582 ---------------------------------------------------------------------------------
  583 Versions 3.16.0 - 3.16.9
  584 	- Liviu Lalescu
  585 - Version 3.16.0
  586 	- Added buildings
  587 	- Added filters for rooms dialog
  588 	- The rooms adding and modifying dialogs are improved
  589 - Version 3.16.1
  590 	- Added ConstraintMinimizeBuildingChangesForTeachers (suggested by Dragos Petrascu)
  591 	- Added ConstraintMinimizeBuildingChangesForStudents (suggested by Dragos Petrascu)
  592 - Version 3.16.2
  593 	- Added ConstraintMaxBuildingChangesPerDayForTeachers (suggested by Dragos Petrascu)
  594 	- Added ConstraintMaxBuildingChangesPerDayForStudents (suggested by Dragos Petrascu)
  595 - Version 3.16.3
  596 	- Added ConstraintMinimizeNumberOfRoomsForTeachers (suggested by Dragos Petrascu)
  597 	- Small bug fixes
  598 - Version 3.16.4
  599 	- Removed ConstraintMinimizeBuildingChangesForTeachers and ConstraintMinimizeBuildingChangesForStudents
  600 	- Added ConstraintMaxRoomChangesPerDayForTeachers & ConstraintMaxRoomChangesPerDayForStudents
  601 - Version 3.16.5
  602 	- The _studentstimetable2.html contains also the teachers (suggested by Daniel Schockett).
  603 - Version 3.16.6
  604 	- The activity can now contain maximum 100 teachers (sugested by Dragos Petrascu)
  605 - Version 3.16.7
  606 	- Small interface bug fixes in ConstraintMaxRoomChangesPerDay add dialog and modify
  607 	dialog (reported by Daan Huntjens).
  608 - Version 3.16.8
  609 	- Improved AddConstraintActivitiesSameStartingTime dialog (suggested by Yush Yuen).
  610 - Version 3.16.9
  611 	- Bug fix in ConstraintActivityPreferredTime (suggested by Yush Yuen).
  612 	- The weight of the constraints can be 0 (suggested by Yush Yuen).
  613 ---------------------------------------------------------------------------------
  614 Versions 3.17.0 - 3.17.12
  615 	- Liviu Lalescu, Polish translation by Radoslaw Pasiok,
  616 	Turkish translation by Mehmet Gezmisoglu,
  617 	Dutch translation by Niels Fikse.
  618 - Version 3.17.0
  619 	- Small bug fixes.
  620 	- The user can now select a list of active activities to build the schedule upon.
  621 - Version 3.17.1
  622 	- Improved the saving in .html of the teachers' timetable (suggested
  623 	by Sebastian O'Halloran).
  624 - Version 3.17.2
  625 	- Improvement in Polish translation (by Radoslaw Pasiok)
  626 - Version 3.17.3
  627 	- Improvement in Polish translation (by Radoslaw Pasiok)
  628 - Version 3.17.4
  629 	- Improvement in Romanian translation (by Liviu Lalescu)
  630 - Version 3.17.5
  631 	- Added a new sample, number 9 (sent by Cristian Gherman)
  632 	- Now each generated timetable html file contains an ending tag, mentioning the date 
  633 	and the time the timetable was generated
  634 - Version 3.17.6
  635 	- Improvement: the interface now contains the constraints to minimize the number of
  636 	rooms for students and for teachers.
  637 	- Improved the sample number 9.
  638 - Version 3.17.7
  639 	- Added Turkish translation (by Mehmet Gezmisoglu).
  640 - Version 3.17.8
  641 	- Bug fix: renaming or deleting the "results" directory during program operation
  642 	is now handled correctly (reported by Tom Hosty).
  643 - Version 3.17.9
  644 	- Bug fix: handling ampersand in the hmtl generated timetables (reported by Tom Hosty).
  645 - Version 3.17.10
  646 	- Now saving the timetable both in days horizontal and days vertical versions in html files.
  647 	(suggested by Tom Hosty).
  648 - Version 3.17.11
  649 	- Improvement in conflicts reporting English language: instead of "this increases the
  650 	conflicts factor with" we have "this increases the conflicts total by" (reported by
  651 	Tom Hosty).
  652 - Version 3.17.12
  653 	- Began Dutch translation (by Niels Fikse).
  654 ---------------------------------------------------------------------------------
  655 Versions 3.18.0 - 3.18.1
  656 	- Liviu Lalescu
  657 - Version 3.18.0
  658 	- Added the possibility to export to iCalendar (suggested by Simon Bohlin).
  659 - Version 3.18.1
  660 	- Small bug fix.
  661 ---------------------------------------------------------------------------------
  662 Versions 4.0.0 - 4.0.9
  663 	- Liviu Lalescu,
  664 	Polish translation update by Radoslaw Pasiok
  665 - Version 4.0.0
  666 	- Changed MY into MS (Malay language).
  667 	- Improved the languages menu.
  668 	- Improved Polish translation (by Radoslaw Pasiok).
  669 	- Bug fix (when pressing the "Write results",FET crashed)
  670 	- Began porting to Qt 4
  671 	- Improved the threads code in the allocate menus
  672 	- Made MAX_SUBGROUPS_PER_GROUP=100 (suggested by Andreas Goranson)
  673 - Version 4.0.1
  674 	- Various improvements
  675 - Version 4.0.2
  676 	- Changed the list of activities, buildings, equipments, rooms, space constraints,
  677 	students years, students groups, students subgroups, subject, subject tag, teachers
  678 	and time constraints to be QList, instead of Q3PtrList.
  679 	- Small leakages fixed
  680 	- Small bug fixes
  681 - Version 4.0.3
  682 	- Bug fix - when erasing a year or group, removing now all corresponding constraints
  683 	(even those referring to erased groups or subgroups). Crash bug fix - when removing
  684 	a year which contained groups with constraints pointing to them (bug prior to 4.0.0)
  685 	- Crash bug fix, when opening a file after another containing rooms
  686 	(bug introduced in version 4.0.0)
  687 - Version 4.0.4
  688 	- Bug fix - updating the generation in timetable allocate menu works correctly
  689 	(previously, it updated generation as 1, 3, 5, ...). This was solved by adding
  690 	a QSemaphore condition in the allocation thread
  691 - Version 4.0.5
  692 	- After pressing Exit, the user can cancel exit.
  693 	- Added a check if FET has write access on the local hard disk.
  694 	- Now the institution name and comments windows are non-modal.
  695 - Version 4.0.6
  696 	- Bug fix - when starting new rules, it does not crash anymore.
  697 - Version 4.0.7
  698 	- Changed biweekly into fortnightly (suggested by Tom Hosty).
  699 	- Crash bug fix (when modifying an activity). This bug was introduced
  700 	in the 4.0 series.
  701 - Version 4.0.8
  702 	- Bug fix - after pressing "stop" and "write", the program crashed.
  703 	Reported by Pat Siddharta. This was a bug previous to 4.0.0
  704 - Version 4.0.9
  705 	- Bug fix - when dealing only with one year or group, the results are now
  706 	displayed correctly (bug introduced in 4.0 versions).
  707 ---------------------------------------------------------------------------------
  708 Versions 4.1.0 - 4.1.10
  709 	- Liviu Lalescu,
  710 	- German translation by Volker Dirr	
  711 	- FAQ improvement by Les Richardson
  712 - Version 4.1.0
  713 	- In the Modify Activity Dialog, the "split into..." spin box is now showed correctly
  714 	- Added German translation (by Volker Dirr)
  715 	- Improved viewing the timetable dialogs (suggested by Volker Dirr). Now the table
  716 	column and row description contain the name of the hours and days.
  717 - Version 4.1.1
  718 	- In the Modify Activity Dialog, the "split into..." spin box is now shaded,
  719 	to show that the modification of it is impossible (suggested by Volker Dirr).
  720 	- The default value for "minimum required distance in days between sub-activities"
  721 	in the add activity dialog is now 1 (suggested by Volker Dirr).
  722 	- The main window title now contains the name of the file (suggested by Volker Dirr).
  723 	- The add and modify activity dialogs are improved (suggested by Volker Dirr).
  724 	- Now the windows contain maximize/minimize buttons (suggested by Volker Dirr).
  725 	- Added teachers, subjects and students statistics (suggested by Volker Dirr).
  726 - Version 4.1.2
  727 	- The windows are now centered about the screen.
  728 	- Removed unused "pause" buttons in allocation menus.
  729 - Version 4.1.3
  730 	- The constraint activity preferred times and constraint activities
  731 	preferred times add and modify dialog are improved (suggested by Volker Dirr).
  732 - Version 4.1.4
  733 	- Improved dialogs constraint activity preferred time and constraint
  734 	activity preferred times, by adding a description next to the
  735 	activity id (suggested by Volker Dirr).
  736 	- Corrected a small bug in ConstraintStudentsSetIntervalMaxDaysPerWeek
  737 	(in reporting conflicts, the subgroup was not correct).
  738 	- Added ConstraintTeacherIntervalMaxDaysPerWeek (suggested by
  739 	Daan Huntjens).
  740 - Version 4.1.5
  741 	- Bug fix - trying to add duplicate constraint activity preferred time
  742 	reports now a duplicate instead of "please report error" (reported
  743 	by Volker Dirr).
  744 	- FAQ improvement by Les Richardson.
  745 - Version 4.1.6
  746 	- The number of students can now be set for a particular activity
  747 	(suggested by Abdul Hadi Kamel)
  748 	- Bug fix - when removing or modifying the students sets for an
  749 	activity, the number of students for that activity are modified
  750 	accordingly.
  751 	- Small bug fixes
  752 - Version 4.1.7
  753 	- The default population size is now MAX_POPULATION_SIZE
  754 	instead of 8192 (suggested by Volker Dirr).
  755 	- Added a description on how to compile/run FET on Max OS X (by Gabi Danon).
  756 	- Bug fix, when erasing a year, group or subgroup (reported by Volker Dirr).
  757 	This bug was introduced in version 4.1.6.
  758 - Version 4.1.8
  759 	- Improved readability and corrected possible future bugs, by adding a
  760 	chromosome property called "timeChangedForMatrixCalculation" and 
  761 	"spaceChangedForMatrixCalculation" (suggested by Volker Dirr).
  762 	- The minimum population size in the dialog is now 3
  763 	(suggested by Volker Dirr).
  764 - Version 4.1.9
  765 	- Possible small bug fix (reported by Volker Dirr).
  766 - Version 4.1.10
  767 	- Possible bug fix (reported by Volker Dirr).
  768 ---------------------------------------------------------------------------------
  769 Versions 4.2.0 - 4.2.x
  770 	- Liviu Lalescu,
  771 	- 2-point and uniform crossover implemented and tested by Volker Dirr
  772 	- Turkish language update by Mahir Nacar
  773 	- French translation update by Patrick Fox
  774 	- Macedonian translation by Zoran Zdravkovski
  775 - Version 4.2.0
  776 	- Implemented 2-point and uniform crossover, by Mr. Volker Dirr.
  777 	The default crossover method is 2-point, which should give better results
  778 	than the 1-point crossover.
  779 	- Added ConstraintTeachersMinHoursDaily (suggested by Manolo Par).
  780 - Version 4.2.1
  781 	- Bug fix - when renaming a students set which is contained in some activities
  782 	(reported by Viktor Ferenczi)
  783 - Version 4.2.2
  784 	- The statistics dialogs show only active activities (suggested by Volker Dirr)
  785 	- Turkish translation update by Mahir Nacar
  786 - Version 4.2.3
  787 - Version 4.2.4
  788 	- French translation improved by Patrick Fox.
  789 - Version 4.2.5
  790 	- Small interface improvements, the add constraint activity preferred time
  791 	and add constraint activity preferred times contains a filter (suggested 
  792 	by Abdul Hadi Kamel)
  793 - Version 4.2.6
  794 	- Small interface improvements, the modify constraint activity preferred time
  795 	and modify constraint activity preferred times contains a filter (suggested 
  796 	by Abdul Hadi Kamel)
  797 - Version 4.2.7
  798 	- Added Hungarian translation (incomplete), by Ferenczi Viktor.
  799 	- Output files (besides the .fet data file) now handle correctly special
  800 	local characters (suggested by Zoran Zdravkovski).
  801 	-Add and modify activity dialog now report correctly the current name,
  802 	including local characters (reported by Zoran Zdravkovski).
  803 - Version 4.2.8
  804 	- Added Macedonian translation (by Zoran Zdravkovski).
  805 - Version 4.2.9
  806 	- Small bug fix (reported by Volker Dirr).
  807 	- Bug fix - students n hours daily (observed by Liviu Lalescu).
  808 ---------------------------------------------------------------------------------
  809 Versions 5.0.0 - 5.0.2
  810 	- Liviu Lalescu,
  811 	- xhtml form of saving timetables by Volker Dirr (timetabling.de)
  812 - Version 5.0.0-preview1 
  813 	- new algorithm
  814 	- too many changes to mention
  815 - Version 5.0.0-preview2
  816 	- Added activities same starting time & hour constraints into time optimization
  817 - Version 5.0.0-preview3
  818 	- Added a warning that older files will be converted as follows: min n days
  819 	will have weight percentage 95% and adj if broken=true
  820 - Version 5.0.0-preview4
  821 	- The students gaps now are measured in hours (a 2 hour gap means 2 conflicts,
  822 	not just one as before).
  823 	- Improved saving xhtml timetables by Volker Dirr
  824 	- Removed the preferred time when adding an activity (useless)
  825 	- Removed not important time constraints which do not fit into new algorithm
  826 - Version 5.0.0-preview5
  827 	- Improvement in the optimization - optimizetime.cpp
  828 - Version 5.0.0-preview6
  829 	- Improvements in the optimization - optimizetime.cpp
  830 - Version 5.0.0-preview7
  831 	- Bug fix in ConstraintBreak
  832 - Version 5.0.0-preview8
  833 	- Made possible again ConstraintActivitiesNotOverlapping
  834 - Version 5.0.0-preview9
  835 	- Raised the limits of max number of activities, constraints,
  836 	max activities for each constraint activities not overlapping and others
  837 	- Improved the solving of activities not overlapping
  838 - Version 5.0.0-preview10
  839 - Version 5.0.0-preview11
  840 	- Improved the algorithm
  841 	- Fixed bug for constraint teachers max gaps per week
  842 - Version 5.0.0-preview12
  843 	- Crash bug fix
  844 - Version 5.0.0-preview13
  845 	- Students set early (suggested by Constantin Romulus)
  846 	- Cannot allocate now without basic time constraints (no more crashing otherwise)
  847 	(reported by Constantin Romulus)
  848 - Version 5.0.0-preview14
  849 	- Romanian language update by Constantin Romulus
  850 	- Teacher(s) max hours daily (suggested by Constantin Romulus)
  851 	- Students (set) max hours daily (suggested by Constantin Romulus)
  852 - Version 5.0.0-preview15
  853 	- Romanian language update by Constantin Romulus and Liviu Lalescu
  854 	- Improved html timetables (suggested by L. W. Johnstone)
  855 - Version 5.0.0-preview16
  856 	- Crash bug fix in teacher max days per week (reported by Constantin Romulus)
  857 - Version 5.0.0-preview17
  858 	- Improvements in add/modify activity dialogs (suggested by Constantin Romulus)
  859 	- Improvements in add/modify constraints not overlapping, same starting hour/time,
  860 	min n days between activities (suggested by Constantin Romulus).
  861 	- Bug fix - when pressing Esc in the allocation of hours.
  862 - Version 5.0.0-preview18
  863 	- Very small improvements.
  864 - Version 5.0.0-preview19
  865 	- Improments in Romanian translation by Liviu Lalescu.
  866 	- Small improvements in interface.
  867 - Version 5.0.0-preview20
  868 - Version 5.0.0-preview21
  869 	- Bugs fixed (not observable usually)
  870 	- Modified adj if broken to be consecutive if same day for min n days constraint
  871 - Version 5.0.0-preview22
  872 	- Bug fix when a single activity cannot be scheduled
  873 	- The break is not counted as a gap for teachers and students
  874 	- Improvement in optimization, for early and gaps - speed improvement in optimization
  875 	- Check for updates on startup
  876 - Version 5.0.0-preview23
  877 - Version 5.0.0-preview24
  878 	- Bug fix in saving ConstraintTeacherMaxHoursDaily
  879 - Version 5.0.0-preview25
  880 	- Improvement in the optimization algorithm.
  881 	- Possible bugs fixes (unlikely to happen bugs).
  882 	- Improved Romanian translation.
  883 - Version 5.0.0-preview26
  884 	- Improved documentation.
  885 - Version 5.0.0-preview27
  886 	- Possible improvement in the optimization algorithm
  887 	- Improved saving the xhtml of timetable by Volker Dirr
  888 	- Small bug fix
  889 - Version 5.0.0-preview28
  890 	- Small changes in saving the xhtml timetables on disk, by Volker Dirr
  891 	- Improved the algorithm (maybe speed improvements)
  892 - Version 5.0.0-preview29
  893 	- Geometry of main form now saved correctly (suggested by Volker Dirr).
  894 - Version 5.0.0-preview30
  895 	- Improvements in optimization algorithm.
  896 - Version 5.0.0
  897 	- Can have activities with no teacher or no students set (suggested by Volker Dirr).
  898 	- Rooms and space allocation.
  899 	- Improved the automatic generation.
  900 	- Bug fix in generation (faster now on newer processors?).
  901 	- Speed improvement in generation.
  902 	- Improved algorithm in minimizing broken constraints min n days between activities.
  903 	- Bug fix in constraint activities preferred times.
  904 - Version 5.0.1
  905 	- Improvement in generation.
  906 	- Weights can now be real numbers.
  907 	- Random generator improved (from Knuth).
  908 - Version 5.0.2
  909 	- Potential (very unlikely) bug fix in random.
  910 	- Changes in automatic generation (hope good changes).
  911 	- Small interface changes.
  912 	- Improvements in translation by Volker Dirr.
  913 ---------------------------------------------------------------------------------
  914 Versions 5.1.0 - 5.1.12
  915 - Version 5.1.0
  916 	- Minor cosmetic changes in code by Volker Dirr.
  917 	- Constraint students (set) min hours daily (suggested by Zsolt Udvari).
  918 	- Improved automatic generation.
  919 - Version 5.1.1
  920 	- Bug fixes (students sets).
  921 	- Division of years automatically (suggested by more users).
  922 - Version 5.1.2
  923 	- Allow only one category for splitting a year.
  924 - Version 5.1.3
  925 	- Improvements in dividing year (suggested by Volker Dirr and Constantin Romulus).
  926 - Version 5.1.4
  927 	- Improvements in dividing year (suggested by Constantin Romulus and Volker Dirr).
  928 	- Improvements in Romanian translation.
  929 	- Improvements in German translation by Volker Dirr.
  930 	- Small improvements in interface.
  931 	- The user can now double click in any constraints dialog to modify.
  932 - Version 5.1.5
  933 	- Improvements in interface (double click in Teachers, Subjects, etc. now modifies).
  934 	- German translation update by Volker Dirr.
  935 - Version 5.1.6
  936 	- Students not available does not induce gaps or early unrespected
  937 	- Teachers not available does not induce gaps
  938 	- Improvement in automatic generation (cycles avoided better)
  939 - Version 5.1.7
  940 	- I hope improvements in automatic generation
  941 - Version 5.1.8
  942 	- Update in German translation by Volker Dirr
  943 	- Improvement: if activity contains duplicated subgroups, this is not reported to the user anymore
  944 	(suggested by Volker Dirr)
  945 	- Improvement in rooms allocation - if room free, activity is placed, even
  946 	if constraint subj (act) pref room(s) has low weight (suggested by Volker Dirr)
  947 	- Changes in automatic generation (I hope good ones)
  948 	- Improvement in adding constraint activities same starting time (filter change does
  949 	not remove activities any longer) (suggested by Volker Dirr)
  950 	- Improvement in adding constraint min n days between activities (filter) (suggested by
  951 	Volker Dirr)
  952 - Version 5.1.9
  953 	- Better initial sorting -> better automatic generation
  954 - Version 5.1.10
  955 	- Detailed constraint activity ... (min n days, preferred time(s), same starting time,
  956 	same starting hour, not overlapping) now contain the teacher, subj, subj tag and students)
  957 	(suggested by Volker Dirr).
  958 	- Better initial sorting - better automatic generation
  959 - Version 5.1.11
  960 	- Improvements in automatic generation
  961 	- Improved saving of x-html timetables by Volker Dirr
  962 - Version 5.1.12
  963 	- Changes in automatic generation (I hope improvements)
  964 	- Constraint subject subject tag preferred room(s) (suggested by Volker Dirr)
  965 ---------------------------------------------------------------------------------
  966 Versions 5.2.0 - 5.2.19
  967 - Version 5.2.0
  968 	- Various small improvements
  969 	- Multiple timetables generation (suggested by Volker Dirr)
  970 	- Constraint 2 activities consecutive (suggested by Felix FSH)
  971 - Version 5.2.1
  972 	- Bug fix in conflicts reporting in conflicts.txt for single timetable generation
  973 - Version 5.2.2
  974 	- Small bug fix (when aborting generation or generation is impossible, correct conflicts are
  975 	written on hard disk)
  976 - Version 5.2.3
  977 	- Small bug fix - when clicking cancel on exit, the filename is preserved correctly
  978 	- Small corrections
  979 - Version 5.2.4
  980 	- Small interface improvement (now the add activity dialog has default show subgroups unchecked)
  981 - Version 5.2.5
  982 	- Small instructions improvements
  983 - Version 5.2.6
  984 	- Minor interface improvements (the conflicts are now named soft conflicts, as they should)
  985 	- Small speed improvement, by changing the timetable generate dialog
  986 - Version 5.2.7
  987 	- Interface improvement
  988 	- Small bug fix (when modifying hours or days)
  989 	- Crash bugs fixed - reported by mantas
  990 - Version 5.2.8
  991 	- Added a test to see if teachers or students have enough slots, from not available constraints
  992 	- Small bug fixes
  993 - Version 5.2.9
  994 	- Small improvements in interface
  995 - Version 5.2.10
  996 	- Small improvements in interface
  997 	- The teachers max gaps can have now only 100% weight
  998 	- Improvements in Romanian translation
  999 - Version 5.2.11
 1000 	- Small potential bug fixes - when reducing the number of hours or days, the old constraints
 1001 	referring to old variables now are reported as wrong
 1002 	- Small bug fix - crashed if user removed directory "results" while program was running
 1003 - Version 5.2.12
 1004 	- Very small interface improvements
 1005 - Version 5.2.13
 1006 	- Modified the divide year dialog, to allow 12 divisions for the first category
 1007 	- Bug fixes (when using activities with no teachers or no students, removing a teacher
 1008 	or a students set might remove accidentaly such activities) - corrected
 1009 	- Added more information about dividing a year
 1010 - Version 5.2.14
 1011 	- Interface improvements
 1012 - Version 5.2.15
 1013 	- The default/maximum time limit for multiple timetables is 1200 minutes (a large enough value)
 1014 	- Minor improvements
 1015 - Version 5.2.16
 1016 	- Minor improvements
 1017 - Version 5.2.17
 1018 	- The teacher max days per week is necessary 100% now
 1019 - Version 5.2.18
 1020 	- Crash bug fix relating constraint students (set) min hours daily combined with not available or break
 1021 	(reported by moryus)
 1022 	- Verious improvements
 1023 - Version 5.2.19
 1024 	- Added information to avoid min hours daily situation when students have a day off, help by Volker Dirr
 1025 ---------------------------------------------------------------------------------
 1026 Versions 5.3.0 - 5.3.6
 1027 - Version 5.3.0
 1028 	- Improved constraint students (set) max hours daily (important speed bug fix)
 1029 	- Constraint students (set) or teacher max hours daily has now compulsory 100% weight
 1030 - Version 5.3.1
 1031 	- Bug fixes in max hours per day
 1032 - Version 5.3.2
 1033 	- Small improvement in help
 1034 - Version 5.3.3
 1035 	- Important potential bug fix, when using students max hours daily without no gaps, with breaks
 1036 	- Small improvements, bug fixes
 1037 	- Constraint activity ends students day
 1038 - Version 5.3.4
 1039 	- Spanish translation by Jose Cesar Fernandez Lopez
 1040 - Version 5.3.5
 1041 	- Added additional tests to see if max hours daily for teachers/students can be respected
 1042 	- Added additional test to see if max days per week for teachers and teacher not available
 1043 	are not impossible
 1044 - Version 5.3.6
 1045 	- Small changes in add/modify activity dialog
 1046 	- Small changes in Settings menu
 1047 	- Added timetable html level by Volker Dirr (you can select a level from 0 to 5,
 1048 	each with additional options, where level 5 has for instance highlighting of similar
 1049 	fields when moving mouse over text)
 1050 	- Added additional tests to check for impossible constraint min n days between activities
 1051 	- Added possibility to change all min n days constraints' weight by a single command
 1052 ---------------------------------------------------------------------------------
 1053 Versions 5.4.0 - 5.4.18
 1054 - Version 5.4.0
 1055 	- Improvement in Spanish translation by Jose Cesar Fernandez Lopez
 1056 	- Now the max hours daily for teachers and students has any weight percentage allowed, again
 1057 	(suggested by Dimitrios Ropokis), allowing also combinations (not really any combination, but nobody needs
 1058 	more than what is possible in FET, I think)
 1059 	- Additional checking the min n days for impossible situations
 1060 	- Constraint teacher(s) min hours daily, suggested by Daniel Chiriac
 1061 	- Crash bug fix when using teachers max gaps for only some of the teachers (reported by Volker Dirr)
 1062 - Version 5.4.1
 1063 	- Improvement in Spanish translation by Jose Cesar Fernandez Lopez
 1064 	- The min hours per day for teachers works even when a teacher has 0 hours in a week
 1065 - Version 5.4.2
 1066 	- Main form interface improvements
 1067 	- Updates in Romanian, German and Spanish translations
 1068 	- Corrected crash bug when disk is full - reported by Maciej Deorowicz
 1069 	- Added detailed activity description in activity preferred room(s) constraints
 1070 	- Bug fix - when removing a room, related constraints subject subject tag preferred rooms
 1071 	are updated correspondingly (unlikely to happen bug)
 1072 - Version 5.4.3
 1073 	- Larger values for maximum number of years, groups and subgroups (suggested by Volker Dirr)
 1074 	- The split activities are now indented, for easier visualization
 1075 	- Improved add constraint activity preferred room(s) dialogs, by adding filters
 1076 - Version 5.4.4
 1077 	- It is allowed now to save the file name containing parentheses (), quotation marks " are not allowed anymore,
 1078 	and neither is semicolon ; because the html code does not work correctly
 1079 - Version 5.4.5
 1080 	- Minor cosmetic changes
 1081 - Version 5.4.6
 1082 	- Minor cosmetic changes
 1083 	- Improvements in Spanish translation by Jose Cesar Fernandez Lopez
 1084 - Version 5.4.7
 1085 	- Minor cosmetic changes
 1086 - Version 5.4.8
 1087 	- Minor cosmetic changes
 1088 - Version 5.4.9
 1089 	- Spanish instructions by Jose Cesar Fernandez Lopez
 1090 	- Groups and years timetable by Volker Dirr (in addition to old subgroups timetable)
 1091 	- Small interface improvements (added filters in dialog of constraints: activity preferred time(s),
 1092 	min n days between activities, activity preferred room(s))
 1093 - Version 5.4.10
 1094 	- Improvement in generation, now retrying 100,000 times before giving up for a specific activity,
 1095 	works even if activity has preferred times with high weight on impossible slots
 1096 	(the idea is that if you have constraints activity(ies) preferred times for impossible
 1097 	slots with weight under 100%, you will get eventually a timetable which contradicts these constraints
 1098 	and is viable). This can be considered important bug fix
 1099 	- Greek translation by Dimitrios Ropokis
 1100 - Version 5.4.11
 1101 	- Arabic translation (partial), by Silver
 1102 	- Small bug fixes in export to html by Volker Dirr
 1103 - Version 5.4.12
 1104 	- Greek translation update by Dimitrios Ropokis
 1105 	- Arabic better support
 1106 	- Arabic translation update by Silver
 1107 	- Code cleanup
 1108 	- Switched to Qt 4.3.2
 1109 - Version 5.4.13
 1110 	- Small bug fixes in html generated timetable by Volker Dirr
 1111 	- Indonesian translation by Nirwan Yus
 1112 	- Italian translation by Marco Barsotti
 1113 	- Arabic translation update by Silver
 1114 - Version 5.4.14
 1115 	- Minor interface improvement - in add rooms dialog, pressing Enter now works better, it adds a room,
 1116 	not displays Help
 1117 - Version 5.4.15
 1118 	- Added an Arabic sample file by Silver
 1119 	- Various translations updates
 1120 	- Update of README file
 1121 	- MAX_ACTIVITIES is now 5000
 1122 - Version 5.4.16
 1123 	- Groups and years timetables contain dashed lines in cells which contain more activities 
 1124 	(suggested by Silver, done by Volker Dirr)
 1125 	- Arabic translation update by Silver
 1126 - Version 5.4.17
 1127 	- Faster precomputation
 1128 	- Significant speed improvement in saving html timetables by Liviu Lalescu
 1129 	- Subjects timetables - by Volker Dirr
 1130 	- Increased max students sets to 15000.
 1131 	- Faster statistics for students.
 1132 	- More allowed subgroups and teachers per activity.
 1133 	- Added more redundant tests to check final solution to respect no gaps, early, max gaps, min hours daily
 1134 	- Faster precalculation
 1135 - Version 5.4.18
 1136 	- Small code cleanup
 1137 	- Italian instructions and FAQ by Marco Barsotti
 1138 	- Greek translation update by my80s
 1139 	- When opening a corrupt file, it reports line, column and error.
 1140 	- Added an Italian sample by Marco Barsotti.
 1141 	- Made possible to lock not only time, but also space or both when viewing the timetable 
 1142 	(suggested by Horatiu Halmajan)
 1143 	- Small improvement: maximum room capacity and number of students for a set is now 15000,
 1144 	instead of 1000
 1145 	- Teachers free periods timetable by Volker Dirr
 1146 ---------------------------------------------------------------------------------
 1147 Versions 5.5.0 - 5.5.9
 1148 - Version 5.5.0
 1149 	- Modified the algorithm (better or (hopefully not) worse)
 1150 	- Command line FET
 1151 	- Constraint teacher(s) max gaps per day
 1152 	- Constraint students (set) max gaps per week
 1153 	- Constraint students (set) early max beginnings at second hour
 1154 	- Subject tags are now named correctly activity tags
 1155 	- Constraints students set/teacher home room(s)
 1156 	- Buildings, building changes constraints
 1157 	- Constraint activities same starting day
 1158 	- Teachers, students sets, rooms, breaks not available matrices
 1159 	- Updated Romanian, Greek, Italian, Arabic translations by the persons in charge
 1160 - Version 5.5.1
 1161 	- Improved handling of multiple constraints preferred room for same activity (or same
 1162 	subject or same subject+activity tag) - suggested by Volker Dirr.
 1163 	- Improved Romanian translation.
 1164 	- Small improvements in the interface.
 1165 - Version 5.5.2
 1166 	- Small improvements in the interface.
 1167 	- Updated German and Indonesian translation.
 1168 	- Possibility to save current timetable in .fet form, with activities locked on their places
 1169 	(suggested by Horatiu Halmajan)
 1170 - Version 5.5.3
 1171 	- Crash bug fix - when adding a year with same name as a group or subgroup (reported by Volker Dirr)
 1172 	- Small interface improvements
 1173 	- Added checks to ensure that duplicate students sets are reported (suggested by Volker Dirr)
 1174 - Version 5.5.4
 1175 	- Greek, Romanian, Spanish translations updates
 1176 	- Small interface improvements
 1177 	- Added constraint 2 activities ordered, to allow to say: activity A2 must be after A1, separated
 1178 	by any number of days or hours (suggested by kdsayang)
 1179 	- Added constraint teacher(s) max hours continuously (suggested by kdsayang)
 1180 	- Added constraint students (set) max hours continuously (suggested by kdsayang)
 1181 	- When modifying a constraint min n days between activities, it checks for duplicates (suggested by kdsayang)
 1182 	- Crash bug fix (rare, if using home rooms with weight under 100% and rooms are constrained)
 1183 	- Added more tests to ensure home rooms inputted correctly
 1184 	- Generating multiple now saves each timetable in .fet form (suggested by kdsayang)
 1185 	- Increased number of days per week to 28, to allow exam scheduling (suggested by kdsayang)
 1186 - Version 5.5.5
 1187 	- Very small bug fix (very unlikely to happen, also the effect is almost null)	
 1188 	- Indonesian, Spanish and Arabic translation updates
 1189 	- Added an additional check for inconsistency
 1190 - Version 5.5.6
 1191 	- Arabic, Romanian, Spanish, Italian translations update.
 1192 	- Added an option to select all slots available or not available for constraints break, not available and preferred times
 1193 	(suggested by didit).
 1194 	- Added another Arabic sample by Silver
 1195 - Version 5.5.7
 1196 	- Added 2 samples from Namibia (by Bobby Wise).
 1197 	- Added 1 sample from Namibia (by Willy Henckert).
 1198 	- Arabic and Greek translations updates.
 1199 	- Bug fix - now inactivating some activities allows to generate the timetable, because constraints referring to
 1200 	these activities are ignored (suggested by Yush Yuen).
 1201 	- Improvement - activating/deactivating activities for a year/group considers also the activities of included groups/subgroups
 1202 	(suggested by Yush Yuen).
 1203 - Version 5.5.8
 1204 	- Bug fix - when saving a timetable, regenerating it might give an impossible timetable - reported by Yush Yuen.
 1205 	This bug solved other possible important bug (I doubt someone observed this bug. What happens: if an
 1206 	activity has a fixed time, then when FET allocates it it fixes a room for this activity and consequent
 1207 	changes are not possible to reschedule this activity to another room - might give impossible timetable in extreme cases).
 1208 	Now it is possible to reallocate the room to another slot.
 1209 	- Improved add activity dialog - if min days is x (greater than 1) and weight is lower than 100.0%, user can add
 1210 	a second constraint with x-1 min days, to ensure activities are better separated.
 1211 	- Added advice to remove redundant min n days constraints when adding same starting time constraints.
 1212 	- Added another sample by Yush Yuen.
 1213 - Version 5.5.9
 1214 	- Added constraint activity(ies) preferred STARTING times, the old preferred times constraints are renamed preferred time slots
 1215 	and are more correct now, taking into consideration the duration of each activity (reported by Volker Dirr).
 1216 	- Allowing more constraint activity preferred starting times (or preferred time slots) for same activity id,
 1217 	which was restricted by a bug to only one. You can add more constraints with different weights.
 1218 ---------------------------------------------------------------------------------
 1219 Versions 5.6.0 - 5.6.4
 1220 - Version 5.6.0
 1221 	- Added import/export CSV (text with comma separated values) filters by Volker Dirr.
 1222 	- Added constraint min gaps between activities (suggested by several users).
 1223 	- Add activity dialog, checking/unchecking show years/groups/subgroups does not erase inserted sets (suggested by Zsolt Udvari).
 1224 	- Small bug fix when importing activities, consecutive if same day is not correctly imported (reported by daviodan).
 1225 	- Added Romanian help for export/import by daviodan.
 1226 - Version 5.6.1
 1227 	- Crash bug fix (probably very rare).
 1228 	- Added possibility to change easier more constraints min n days between activities
 1229 	- Added constraints subactivities preferred time slots and subactivities preferred starting times
 1230 	(suggested by Volker Dirr). You can specify the component number for subactivities, useful for constraining courses,
 1231 	say only the first or the last components of a split activity to be placed earlier.
 1232 	- Switched to Qt 4.4.0 and gcc 4.3.1
 1233 	- Indonesian, Romanian, Italian, German translations updates.
 1234 - Version 5.6.2
 1235 	- Added constraint teacher(s) and students (set) interval max days per week, to specify an hourly interval
 1236 	and the maximum number of days per week for teachers (students) to work in this interval (suggested by Silver).
 1237 	This constraint is very useful, for instance specify that teachers and students must not work more than 2
 1238 	times per week in the last hour of the day.
 1239 	- Added constraint a set of activities end students day - to specify for a group of activities that they
 1240 	should end the day for students (for instance for meetings with the class master) - suggested by Zsolt Udvari.
 1241 	- Bug fix - when modifying a constraints (sub)activities preferred starting times or time slots, the activity tag
 1242 	is now correctly updated.
 1243 - Version 5.6.3
 1244 	- Crash bug fix (probably rare)
 1245 	- Added an -x- in the not available slots in teachers', students' and rooms' timetables
 1246 	(suggested by George Miliotis), added by Volker Dirr.
 1247 	- Added Lithuanian translation by Darius Staigys (incomplete yet).
 1248 - Version 5.6.4
 1249 	- Improved Arabic, Lithuanian and Italian translations.
 1250 	- Improved a very very rare situation (raised the maximum number of retries for a single activity from 100,000 to 200,000.
 1251 	This way, some saved timetables which contain constraints with weights close to 100% and below 100% (like 99.995%) are possible.
 1252 	Probably this situation is unnoticed by anybody). The possible problem is not perfectly solved, but it is a compromise.
 1253 	- Added possibility to mark or not -x- in the not available slots in timetables (suggested by Silvia, done by Volker Dirr).
 1254 	- Added all activities timetables by Volker Dirr (suggested by kdsayang)
 1255 	- Added exporting of timetable in csv form by Volker Dirr
 1256 ---------------------------------------------------------------------------------
 1257 Versions 5.7.0 - 5.7.7
 1258 - Version 5.7.0
 1259 	- Added an advanced command to spread better the divided activities in a week - very useful for schools, probably.
 1260 	- Minor interface improvement (in report duplicate activities routine)
 1261 	- Added status bar for File -> new, open, save and save as menus
 1262 - Version 5.7.1
 1263 	- Added an option to remove redundant constraints
 1264 	- Added exporting of advanced statistics as html by Volker Dirr
 1265 	- Arabic translation update
 1266 - Version 5.7.2
 1267 	- Added 2 more samples by Cristian Balint
 1268 	- Small bug fix in statistics exported as html, by Volker Dirr
 1269 - Version 5.7.3
 1270 	- Modified a bit the spreading activities dialog, now the activities split into 2 and 3 not in consecutive days
 1271 	is by default NOT checked, because this might lead to impossible timetables for difficult files. If you want
 1272 	spreading for these activities, you need to manually select this option.
 1273 	- Arabic translation update by Silver
 1274 - Version 5.7.4
 1275 	- Minor bug fix - if searching for updates at startup is enabled, it gave segmentation fault when exiting FET, under GNU/Linux.
 1276 	Probably unnoticed bug.
 1277 	- Switched to Qt 4.4.3
 1278 	- Added a user's manual by Volker Dirr
 1279 	- Spanish translation update by Jose Cesar Fernandez Lopez
 1280 	- Added an additional sample file by Horatiu Halmajan (Faculty of Economics, Timisoara, Romania)
 1281 - Version 5.7.5
 1282 	- Added constraint 2 activities grouped, which is the non-oriented version of constraint 2 activities consecutive
 1283 	(the activities can be placed in any order, but one near the other) (suggested by sherman)
 1284 	- Added an additional test to ensure that constraints same starting time are not impossible
 1285 	- Very minor bug fixes (when working with redundant constraints same starting time/day/hour). This bug
 1286 	is most probably unnoticed.
 1287 	- Added an additional sample file by Zsolt Udvari (Bethlen, Hungary).
 1288 - Version 5.7.6
 1289 	- Minor interface improvements
 1290 	(Command line version now has the parameter "htmllevel", the old one was
 1291 	"timetablehtmllevel", which still works. Added description in the README file of the default values.
 1292 	Other interface improvements).
 1293 - Version 5.7.7
 1294 	- Minor improvements (the settings are now saved in a file which does not contain spaces under GNU/Linux,
 1295 	other improvements).
 1296 ---------------------------------------------------------------------------------
 1297 Versions 5.8.0 - 5.8.1
 1298 - Version 5.8.0
 1299 	- Added the possibility to view locked activities in the timetables and toggle lock/unlock activities in the timetable
 1300 	(suggested by Azu Boba, implemented by Liviu Lalescu and Volker Dirr).
 1301 	- Added the possibility to lock/unlock the activities of a certain day
 1302 	(suggested by Azu Boba, implemented by Liviu Lalescu and Volker Dirr).
 1303 	- Added the possibility to lock/unlock the activities which end students day
 1304 	(suggested by Volker Dirr, implemented by Liviu Lalescu).
 1305 	- The constraints activity preferred starting time and activity preferred room have now an attribute, which
 1306 	can mean that some constraints are added permanently by the human operator and cannot be unlocked from the view timetable
 1307 	form (suggested by Azu Boba, done by Liviu Lalescu and Volker Dirr).
 1308 	- Minor bug fixes (very rare crashes).
 1309 	- Minor improvements - when viewing the timetable, the detailed activity view is updated correctly
 1310 	(suggested by Jose Cesar Fernandez Lopez).
 1311 	- Other minor interface improvements.
 1312 	- Minor improvements.
 1313 	- Repaired the Turkish translation (by Liviu Lalescu), but it is still old and incomplete.
 1314 	- Added the output of activities timetable as xml
 1315 - Version 5.8.1
 1316 	- Minor improvements (code cleanup) - modified a bit the xml files to contain for boolean variables only true/false values
 1317 	instead of yes/no (following xml format recommendations).
 1318 	- Minor improvement: the constraint activity preferred starting time must have now the day and the hour both specified,
 1319 	so there is a clearer distinction between preferred starting time and preferred starting times.
 1320 	- Minor improvement - when reading some kind of invalid data, instead of crashing, now FET reports the error
 1321 	(like for instance duplicate teachers, or subjects, or wrong tags).
 1322 	- Minor improvements in the Italian, Arabic and Spanish translations.
 1323 	- Added a sample file from Azu Boba.
 1324 	- The index.html links now open in the same window (suggested by daviodan).
 1325 ---------------------------------------------------------------------------------
 1326 Versions 5.9.0 - 5.9.4
 1327 - Version 5.9.0
 1328 	- Added multiple activity tags for a single activity.
 1329 	- It is now possible to edit a single subactivity.
 1330 	- Added constraints teacher(s) or students (set) activity tag max hours continuously (to specify that
 1331 	a teacher or a students set must have maximum n hours continuously for an activity tag) - suggested by Silver,
 1332 	George Miliotis and Volker Dirr.
 1333 	- Improved a bit the memory consumption.
 1334 	- To avoid problems with very large filenames, the sample file names were shortened.
 1335 	- Minor html timetables corrections (cosmetic).
 1336 	- Updates in Spanish, Arabic, Romanian and Italian translations.
 1337 	- Minor improvements.
 1338 - Version 5.9.1
 1339 	- Improved a situation for fixed timetables which were impossible sometimes (reported by Horatiu Halmajan). This bug is
 1340 	not entirely fixed.
 1341 	- Improved the html timetables by Volker Dirr.
 1342 	- Crash bug fix for constraint min gaps between activities with weight below 100%.
 1343 	- Bug fix in students early constraint - not critical bug.
 1344 	- Updates in Arabic translation.
 1345 - Version 5.9.2
 1346 	- Crash bug fix when importing activities (reported by Thomas Schwartz).
 1347 	- Improvements and corrections in the import filter.
 1348 - Version 5.9.3
 1349 	- Added constraint activity tag preferred room(s) - suggested by Horatiu Halmajan and Catalin Maican
 1350 - Version 5.9.4
 1351 	- Added the Russian translation (incomplete) - by Ilya V. Paramonov
 1352 	- Added the Persian translation (incomplete) - by Hamed SadeghiNeshat
 1353 	- Minor bug fix by Volker Dirr - highlighting the same teacher or student set, for html level >= 5, did not work
 1354 	correctly for advanced statistics export.
 1355 	- Improved compilation time and memory consumption by modifying the data reading and parsing routines
 1356 	(additional checking/tests needed here).
 1357 	- Minor memory leak fix (normally, not noticeable).
 1358 	- Minor interface bug fix (description of constraint teacher max gaps per day displayed incorrectly information about the
 1359 	gaps, writing "per week" instead of "per day").
 1360 	- Modified the order of search for translation files (firstly in current directory, then in current directory/translations,
 1361 	then, under systems which support it, in /usr/share/fet/translations).
 1362 ---------------------------------------------------------------------------------
 1363 Versions 5.10.0 - 5.10.3
 1364 - Version 5.10.0
 1365 	- Leaking bugs fixed (closed Qt widgets were not removed).
 1366 	- Bug fix in generation algorithm. This bug is not seen in practice, but the code in generate.cpp was incorrect in a minor portion.
 1367 	Specifically, it corrected tests done when the user has constraints of type students early max beginnings at second hour,
 1368 	without max gaps per week for students, with max or min hours daily for students.
 1369 	- Added constraint teachers max days per week (suggested by Marco Barsotti).
 1370 	- Made the results directory customizable (user can choose it) - suggested by Massimo Mancini.
 1371 	- Fixed a bug: if user deactivated some activities, in some cases he could not generate a timetable (if using preferred times
 1372 	for (sub)activities).
 1373 	- Added a filter in add and modify dialogs constraints activities not overlapping (suggested by Yush Yuen).
 1374 	- Added a new feature in the timetable generate dialog, which allows you to see the time when the highest
 1375 	number of activities was placed (suggested by Yush Yuen).
 1376 	- Added a Catalan translation of the manual, by Joan de Gracia.
 1377 	- Changed the name of the html timetable files.
 1378 	- Corrected many translations' layout (by Liviu Lalescu).
 1379 	- Added a new test for inconsitency for indirect links between constraints actvities same starting time
 1380 	(suggested by Silvia).
 1381 	- Minor improvement - in students statistics menu, user can select to view complete structure (duplicates enabled)
 1382 	or canonical structure.
 1383 	- Interface improvement - dialogs when removing the constraints or adding them are improved, so that they are not
 1384 	very large for large constraints.
 1385 	- Selection mode in constraints not available and preferred slots is improved - you can click table header
 1386 	(suggested by Massimo Mancini).
 1387 	- Minor other interface improvements.
 1388 	- Export warns if existing files (suggested by Angela).
 1389 	- Changed directory of sample inputs to 'examples'.
 1390 	- Added a 'Related' checkbox in activities and subactivities dialogs (suggested by Bingen).
 1391 	- Speed improvement in some precomputing situations (not in generation).
 1392 	- Improved size for constraints with combo boxes of very large activities (suggested by Bingen).
 1393 - Version 5.10.1
 1394 	- Speed improvement if user has constraints activities same starting time. Idea and partial code by Volker Dirr.
 1395 	- Added possibility to print activities with same starting time in the html timetables (suggested on the forum, implemented by Volker Dirr).
 1396 	- Minor interface improments under GNU/Linux. The combo boxes are now smaller.
 1397 	- Modified the main menu arrangement of constraints (suggested by Massimo Mancini).
 1398 	- Crash bug fix (very rare, if user pressed cancel immediately after hitting generation start in timetable generate dialog).
 1399 	- Added another sample file (by T. Renganathan).
 1400 - Version 5.10.2
 1401 	- Speed improvement if user has constraints activities same starting time, 2 activities consecutive and 2 activities ordered and
 1402 	 activities not overlapping (idea and partial code by Volker Dirr). In some cases, the speed improvement is very high. This has to
 1403 	 do with the initial ordering of the activities.
 1404 	- Other minor speed improvements (idea and partial code by Volker Dirr).
 1405 	- Added a Persian manual by Hamed SadeghiNeshat.
 1406 - Version 5.10.3
 1407 	- Added 2 new constraints: three activities grouped, max days between activities (suggested by Zsolt Udvari).
 1408 	- Improved the names of constraints: "2" activities grouped, ordered and consecutive are now "two" activities grouped, ordered and consecutive.
 1409 	- Code cleanup.
 1410 	- Added a new Italian sample file, by Marco.
 1411 ---------------------------------------------------------------------------------
 1412 Version 5.11.0
 1413 - Version 5.11.0
 1414 	- Updated to Qt 4.5.2
 1415 	- Converted all dialogs to Qt 4 Designer files - suggested by George Miliotis.
 1416 	Compilation time is now shorter and intermediary and executable files are smaller.
 1417 	- Added constraint teacher(s) min days per week (suggested by several users).
 1418 	- Added constraint teacher(s) or students (set) for an activity tag maximum hours daily (suggested by several users).
 1419 	It is not perfect and must be enabled from settings menu.
 1420 	- Added constraint students (set) max gaps per day. It is not perfect and must be enabled from settings menu.
 1421 	- Very rare crash bug fix (reported by Marco Barsotti).
 1422 	- Constraint room not available times permits now multiple constraints for the same room (so, you can use multiple constraints with
 1423 	 different weights and preferences for the same room).
 1424 	- In add/modify activity and modify subactivity dialogs, the students are displayed in a tree-like structure (suggested by George Miliotis).
 1425 	- In all constraints dialogs, added a nice filter (suggested by daviodan).
 1426 	- Changed name of constraint: MinNDaysBetweenActivities becomes MinDaysBetweenActivities.
 1427 	- Added a count for activities list and constraints list.
 1428 	- The constraints with tables now contain an X (nicer look), also centered nicely, and they have colors (which can be enabled in settings)
 1429 	- The timetables view forms now center text in cells.
 1430 	- Many other minor interface improvements.
 1431 	- Rewritten the Catalan translation by Silvia. It is very complete, check it out.
 1432 	- Added a new Greek sample file, by George Miliotis.
 1433 	- Updated and improved Persian translation by sally sat.
 1434 	- Dropped !DOCTYPE FET tag in the .fet files - following general recommendations, and changed FET tag to fet tag. Of course you can open older files.
 1435 	- Improved activities simple description (suggested by Massimo Mancini and Chafik Graiguer).
 1436 	- Added possibility to save the highest stage timetable (suggested by Chafik Graiguer, pinco and Massimo Mancini).
 1437 	- Added a new Romanian sample file, by Horatiu Halmajan.
 1438 	- Updated translations: Russian, German, Romanian, Italian, Spanish.
 1439 	- The timetable view dialogs now have resizeable widgets (you can drag the sections with the mouse) - suggested by Ben Bauer.
 1440 ---------------------------------------------------------------------------------
 1441 Versions 5.12.0 - 5.12.3
 1442 - Version 5.12.0
 1443 	- Added shortcut buttons on the main form (suggested by more users, especially: daviodan, Massimo Mancini, Paolo Cataldi). They can be deactivated from Settings - Interface menu.
 1444 	- Increased max activities to 15,000, max days per 'week' to 35, and other limits, and improved memory management. Now you don't need to have much virtual memory and memory usage is lower.
 1445 	This better memory management may bring a small slowdown of the generation, although in rare cases the new version may be faster. Speed variation depends also on the platform.
 1446 	More details about the possible slowdown: I compared times by starting parallel generations with the same random seed, which produces the same timetables in identical steps.
 1447 	I noticed usually less than 10% increased generating time, but in rare cases for some unusual files a bit more, maximum 17%.
 1448 	From the official examples, the worst situation is for the file Hungary/Bethlen/2007-2008-difficult/Bethlen_2007_2008.fet, with about 17% slowdown from FET version 5.11.0 to FET 5.12.0.
 1449 	I apologise for this "downgrade" of speed, but it is necessary.
 1450 	- Updated to Qt 4.6.0
 1451 	- Improved add activity dialog, by Volker Dirr: if in activities dialog, you select a filter and then try to add an activity, the values in this filter
 1452 	will be selected in the add activity dialog (this was also suggested by daviodan).
 1453 	- Minor interface improvements.
 1454 	- Changed help management (added links to online help).
 1455 	- Corrected/updated translations.
 1456 	- Code cleanup.
 1457 - Version 5.12.1
 1458 	- Added Ukrainian translation (by Andriy Melnyk).
 1459 	- Bug fix: when modifying the number of students in a students set, the related activities will show the correct number of students, but the generation
 1460 	will consider the old number of students until the user saves and loads again the file.
 1461 	- Bug fix when adding/modifying a group's/subgroup's number of students, now all groups/subgroups with same name will have the same (new) number of students.
 1462 	- Improved speed of loading for large files and blocked user input while loading a larger file, because otherwise the user could obtain an incomplete file
 1463 	(minor bug reported by Volker Dirr).
 1464 	- Minor interface improvement: when exiting FET and choosing Save file, if you press Cancel, FET will not exit anymore - reported by Soyeb Aswat
 1465 	- Minor interface improvement: added a shortcut button to advanced functions in Time shortcuts section.
 1466 	- Minor leak fixed (when removing a group or subgroup).
 1467 	- Other minor bug fixes, when removing a group or a year.
 1468 - Version 5.12.2
 1469 	- Updated to Qt 4.6.1 .
 1470 	- Minor interface improvement: since a person reported he accidentally removed the basic constraints, it was added additional user confirmation for this, and more user information.
 1471 	- Corrected a possible compiling crash bug under MinGW (this is not a FET bug, it is a MinGW bug). It was made a hack to overpass this bug.
 1472 	- Improved export of timetable as CSV, by adding the id-s of the activities (suggested by m).
 1473 - Version 5.12.3
 1474 	- Crash bug fix for a rare situation, in which you have constraints (sub)activities preferred starting times or time slots and they refer to no activity (reported by George Miliotis).
 1475 ---------------------------------------------------------------------------------
 1476 Versions 5.13.0 - 5.13.5
 1477 - Version 5.13.0
 1478 	- Updated to Qt 4.6.2.
 1479 	- For constraints students (set) min hours daily is now possible to allow empty days (in advanced usage) - suggested by Horatiu Halmajan and Catalin Maican.
 1480 	- Added a simple activity planning form, by Volker Dirr (see Advanced menu).
 1481 	- Now it is allowed to have 3 constraints of type interval max days per week for each students subgroup or teacher (it was maximum 2 previously).
 1482 	- Added export of active activities, by Volker Dirr.
 1483 	- Added Brazilian Portuguese translation (partial, incomplete yet), by Werner Bruns and Frank Martin.
 1484 	- Added Danish translation (partial, only the main form and a few other forms), by David Lamhauge.
 1485 	- Improved a bit the memory consumption.
 1486 	- The tables contain now an -x- (lowercase) if the teacher/students set/room is not available and -X- (uppercase) for a break (suggested by George Miliotis).
 1487 	Also, you can configure separately if you want breaks displayed and/or not available displayed.
 1488 	- Removed some useless messages, improving speed for some rare cases under GNU/Linux operating system and similar.
 1489 	- Added a few new sample files (by Christoph Schilling, Horatiu Halmajan and aliponte).
 1490 	- Changed default language/locale to en_US (instead of en_GB).
 1491 - Version 5.13.1
 1492 	- Corrected a generation bug (probably very rare, it gave impossible timetable). Bug may have appeared if using
 1493 	constraints students (set) early with max beginnings at second hour >= 1 and generating on a locked file.
 1494 	- Increased maximum number of teachers, subjects, rooms and buildings to 6000 (they were 3000 previously).
 1495 	- Corrected some HTML minor problems, by Volker Dirr.
 1496 	- Added a new sample file, by Chafik Graiguer (from Morocco). This user also describes tricks to use official FET for Moroccan schools.
 1497 - Version 5.13.2
 1498 	- Increased max activities from 15,000 to 30,000 (suggested by murad). Also, increased max time constraints from 30,000 to 60,000 and max space constraints from 30,000 to 60,000.
 1499 	- Added a partial Sinhala translation (only the main menu), by Achini Duisna.
 1500 	- Updated the Indonesian translation, by Nirwan Yus.
 1501 	- Very rare crash bugs fixed.
 1502 	- Code cleanup.
 1503 - Version 5.13.3
 1504 	- Updated the Indonesian translation, by Nirwan Yus.
 1505 	- Rare minor bug fixed, reported by Frans on the forum.
 1506 	- Code cleanup.
 1507 - Version 5.13.4
 1508 	- Added a Slovak translation, by Ondrej Gregor.
 1509 - Version 5.13.5
 1510 	- Corrected a bug, under newer versions of GNOME (the locked/unlocked icons for the special constraints were not shown in the menus).
 1511 	- Very rare bug fix (crash in import if some fields in a line are missing, reported by murad).
 1512 	- Other minor bug fixes in import (if an imported line was incorrect, the report message didn't specify this line number, in some cases).
 1513 	- Updated the Indonesian translation, by Nirwan Yus.
 1514 	- Updated the Spanish translation, by Jose Cesar Fernandez Lopez.
 1515 	- Code cleanup
 1516 ---------------------------------------------------------------------------------
 1517 Versions 5.14.0 - 5.14.5
 1518 - Version 5.14.0
 1519 	- Improved the random number generator, so that potential cycling problems are avoided (though probably nobody met such problems).
 1520 	The new random number generator has a much longer period and is better. The command line parameters for specifying the random
 1521 	seed are changed and you need to change your script if you use FET command line and if you want to specify the random seed.
 1522 	See the README file for the new command line parameters for specifying the random seed.
 1523 	- Improved memory consumption on constraints activity/activities/subactivities preferred starting times/preferred time slots.
 1524 	- Minor interface improvements.
 1525 	- Updates in the Arabic translation, by Silver.
 1526 - Version 5.14.1
 1527 	- Speed improvement in the generation algorithm (this speed improvement is better observable as the number of hours per week is larger).
 1528 	- Added a partial Hebrew translation, by Yotam Medini (only the main menu).
 1529 - Version 5.14.2
 1530 	- A rare possible problem is improved (not completely solved). This problem was reported by Marco Barsotti: for some fixed timetables the generation
 1531 	may report incorrectly an impossible timetable. This problem cannot be solved perfectly, only patched, and this will hopefully solve the problem
 1532 	in all practical situations.
 1533 	- An activity can now be split into 35 (it was previously only 10) - suggested by mohd on the forum.
 1534 	- Improved a bit the add/modify activity dialogs (inactive tabs for the components of a subactivity are disabled).
 1535 	- Updated the Slovak translation, by Ondrej Gregor.
 1536 	- Added a new sample file, by Marco Barsotti.
 1537 - Version 5.14.3
 1538 	- Upgraded to Qt 4.7.0.
 1539 	- Improved the Greek translation, by Dimitris Kanatas.
 1540 	- Minor interface improvements.
 1541 	- Added two new sample files, by Massimo Mancini and Dimitris Kanatas.
 1542 - Version 5.14.4
 1543 	- Upgraded to Qt 4.7.2.
 1544 	- Updated the French translation, by Regis Bouguin (it is now complete).
 1545 	- Added a complete Serbian translation, by Ivan Starchevicy and Radan Putnik.
 1546 	- Minor improvements.
 1547 	- Added 3 new sample files, by waleed, M K Lohumi and Asti Widayanti.
 1548 - Version 5.14.5
 1549 	- Updated to Qt 4.7.3.
 1550 	- The generate multiple timetable dialog now shows max placed activities for the current timetable and for each timetable with time limit exceeded
 1551 	(suggested by Yush Yuen).
 1552 	- Non-critical interface bug fix under Mac OS X: in the add and modify activity dialogs, the tab widget for the subactivities was too large, showing
 1553 	all the 35 possible components. Bug reported by Yush Yuen.
 1554 	- Minor interface bug fix under Mac OS X: the dialogs now show minimize/maximize buttons. Bug reported by Yush Yuen.
 1555 	- Minor improvement in the HTML exported timetables (multi-line comments look better), by Volker Dirr.
 1556 	- Added a Galician translation, by Juan Marcos Filgueira Gomis (based on the Spanish translation, as of April 2011, by Jose Cesar Fernandez Lopez).
 1557 	- Added a Spanish secondary school example file, by llantones.
 1558 ---------------------------------------------------------------------------------
 1559 Version 5.15.0
 1560 - Version 5.15.0
 1561 	- Added two new constraints:
 1562 	1) Activities occupy max time slots from selection. This is useful in more cases, for instance to force
 1563 	some teachers to have activities in certain time slots. (For example, if in a 5 days week with 6 hours per day, teacher T has 20 hours of
 1564 	activities and needs to have activities in the first 3 hours of Monday: add a constraint with all the teacher's activities,
 1565 	all time slots minus these 3 (so 5*6-3=27 slots selected in the constraint), and specify the maximum number of selected time slots occupied
 1566 	by the selected activities to be 17.) Suggested by Zsolt Udvari, Christian Kemmer, Davide G. M. Salvetti, lalloso, Silver, and maybe other users.
 1567 	2) Activities max simultaneous in selected time slots. User chooses a set of activities, a set of time slots, and specifies
 1568 	that in each time slot there should be an upper limit on the activities from the chosen set. Useful for example if you want each slot
 1569 	to have say at least 3 free teachers, for substitution or supervision.
 1570 	- Updated to Qt 4.7.4.
 1571 	- Removed dependence of Qt3Support classes. Many dialogs were changed. This is to improve FET and to prepare it for the future Qt 5.
 1572 	- The program is now storing the geometry of most dialogs (suggested by more users. Zsolt Udvari suggested to store also the
 1573 	Activity planning dialog settings).
 1574 	- The activity tags, students, teachers, subjects, rooms, buildings, activities, subactivities, all time constraints
 1575 	and all space constraints dialogs contain a draggable splitter, for better viewing (suggested by daviodan).
 1576 	- Taking care of when a file was modified. When it was not modified, the user can quit FET directly (suggested by Horatiu Halmajan and maybe other users).
 1577 	- Recently used files list (suggested by daviodan, Silver and maybe other users).
 1578 	- Activities rooms statistics - it shows the list of activities which will certainly or possibly be scheduled in an unspecified room
 1579 	(suggested by Volker Dirr, who also did a part of the coding, Corfiot, Fabio Piedimonte).
 1580 	- Removed the upper limit on the number of time and space constraints.
 1581 	- When modifying the days or hours, the affected constraints will be modified or removed, after confirmation from the user.
 1582 	- Language change is activated without restarting.
 1583 	- Many other interface improvements.
 1584 	- Added a new sample file, by Silver.
 1585 	- Improved the Morocco sample file and the Morocco instructions (by Liviu Lalescu and Chafik Graiguer).
 1586 ---------------------------------------------------------------------------------
 1587 Versions 5.16.0 - 5.16.1
 1588 - Version 5.16.0
 1589 	- Each constraint can be activated/deactivated and also each constraint may have an optional comment. The user can sort the constraints
 1590 	based on their comment. These special functions can only be accessed from all time/space constraints dialogs (suggested by George Miliotis,
 1591 	Davide G. M. Salvetti and maybe other users).
 1592 	- Each activity may have an optional comment (suggested by K, m and maybe other users).
 1593 	- The command line version now saves the current timetable and the highest stage timetable if it receives SIGTERM from the user, then exits
 1594 	(suggested by Davide G. M. Salvetti and maybe other users).
 1595 	- Added a Vietnamese translation, by Nguyen Truong Thang.
 1596 	- Minor interface bug fixes.
 1597 	- Updated the Saudi Arabia examination timetable file, by Silver.
 1598 - Version 5.16.1
 1599 	- Updated to Qt 4.8.0.
 1600 	- Bug fix: command line interface now accepts native file separator characters (reported by Sarwan Bangar).
 1601 	- When using command line with a time limit, and the time limit is exceeded, FET will save the highest stage and the current timetable.
 1602 	Suggestion and code by Ian Holden.
 1603 	- Exporting of the timetable as a CSV file now saves also the activities comments (suggested by m, implemented by Volker Dirr).
 1604 	- Minor bug fix in HTML timetables, by Volker Dirr.
 1605 	- Minor interface bug fixes.
 1606 ---------------------------------------------------------------------------------
 1607 Version 5.17.0
 1608 - Version 5.17.0
 1609 	- Printing of the timetables (directly from the interface), by Volker Dirr (suggested by Bobby Wise, Anwarul Alam, daviodan and maybe other users).
 1610 	- Updated to Qt 4.8.1.
 1611 	- Minor interface improvements and bug fixes.
 1612 	- Added a new Greek sample file, by Petros Nouvakis.
 1613 ---------------------------------------------------------------------------------
 1614 Versions 5.18.0 - 5.18.2
 1615 - Version 5.18.0
 1616 	- Very serious old bug fix. This was found trying to implement the new constraint (see below) in such a way to solve a more complicated file
 1617 	by Yush Yuen. Since nobody complained, it seems that until now the bug was not critical (but might have slowed down some timetables which have
 1618 	rooms and preferred/home rooms constraints). Bug exists from the start of the implementation of the space allocation in FET, probably.
 1619 	A big 'Thank you!' to Yush Yuen, who was very helpful in finding the problem.
 1620 	- Added a new constraint, activities occupy max different rooms (which can, for example, constrain some activities to be in the same room
 1621 	(in different time slots, of course) if max different rooms = 1). Suggested by Yush Yuen, nomad, Volker Dirr and maybe others.
 1622 	- Safe saving of .fet files (save with .fet.tmp name, then remove old .fet file, then rename .fet.tmp to .fet).
 1623 	- Saving of the random seed after the end of the generation (in addition to saving it at the beginning).
 1624 	- Added an Uzbek translation, by Orzubek Eraliyev.
 1625 - Version 5.18.1
 1626 	- Minor code improvement.
 1627 	- Got rid of MAX_SUBJECTS limitation (now there is a virtually unlimited number of subjects) - suggested by Volker Dirr.
 1628 	- Updated to Qt 4.8.2.
 1629 	- Added a new sample file (by L. W. Johnstone, from Belize).
 1630 - Version 5.18.2
 1631 	- Minor interface improvements.
 1632 	- Updated the French translation, by Regis Bouguin.
 1633 	- Added a new sample file, by Daniel.
 1634 ---------------------------------------------------------------------------------
 1635 Versions 5.19.0 - 5.19.4
 1636 - Version 5.19.0
 1637 	- Updated the sources to Qt 5.0.0 (but the precompiled Windows version still uses Qt 4.8.4, because of various problems).
 1638 	- Made a separate command-line interface without using the X-screen (suggested by Danny Zitzman, Zsolt Udvari and maybe other users).
 1639 	- Made generation identical on all computers, by modifying QSet handling in the parts where the generation depends on the order of
 1640 	elements in a QSet (the elements are sorted and randomized, then). A minor bug was corrected with this occasion.
 1641 	- Now you can split a year into 4 categories (suggested by Bobby Wise).
 1642 	- When starting FET, the first shortcuts tab section (File) is selected (suggested by a user).
 1643 	- Added three new sample files, by waleed and Bobby Wise.
 1644 - Version 5.19.1
 1645 	- Updated the sources to Qt 5.0.2 (but the precompiled Windows version still uses Qt 4.8.4, because of various problems).
 1646 	- Corrected some minor string problems.
 1647 	- Updated the Romanian translation (by Liviu Lalescu). Now it uses diacritics.
 1648 	- Updated the Ukrainian translation (by Andriy Melnyk).
 1649 	- Added a new sample file, by geaplanet.
 1650 - Version 5.19.2
 1651 	- Minor bugs corrected (formatting in the HTML timetables), by Volker Dirr.
 1652 	- Corrected some minor string problems.
 1653 	- Updated the Romanian translation (by Liviu Lalescu). It is now complete.
 1654 - Version 5.19.3
 1655 	- Corrected the Romanian translation (by Horatiu Halmajan, daviodan and Liviu Lalescu).
 1656 - Version 5.19.4
 1657 	- Updated the sources to Qt 5.1.1 (but the precompiled Windows version still uses Qt 4.8.5, because of various problems).
 1658 	- Import bugs corrected (by Volker Dirr).
 1659 	- Added two new sample files, from Belize, by donjon.
 1660 	- Added two new sample files, from Algeria, by Laid Messaoudi.
 1661 ---------------------------------------------------------------------------------
 1662 Versions 5.20.0 - 5.20.2
 1663 - Version 5.20.0
 1664 	- Added constraint activities same room if consecutive (suggested by agemagician).
 1665 	- Added constraints students (set) max days per week (suggested by more users).
 1666 	- Bug fix in constraint activities occupy max different rooms (not noticeable).
 1667 	- Added a new sample file, by rapsy.
 1668 - Version 5.20.1
 1669 	- Minor improvements and bug fixes.
 1670 - Version 5.20.2
 1671 	- Added an option to disable printing of the activity tags in the HTML generated timetables (suggested by drew and other users).
 1672 	- Memory consumption improvement when writing advanced statistics to the hard disk.
 1673 	- Dropped the debug console messages (potential bug reported by MarioMic), because under some GNU/Linux distributions
 1674 	these might fill the hard disk. However, the command line version can be made verbose by the option --verbose=true.
 1675 	- The multiple generation outputs an overall report (suggested by MarioMic).
 1676 	- Minor improvements and source cleanup.
 1677 ---------------------------------------------------------------------------------
 1678 Versions 5.21.0 - 5.21.3
 1679 - Version 5.21.0
 1680 	- Updated the sources to Qt 5.2.0 (but the precompiled Windows version still uses Qt 4.8.5, because of various problems).
 1681 	- Added print of advanced statistics directly from FET, suggested by Bobby Wise and implemented by Volker Dirr.
 1682 	- Added an option to duplicate vertical names in the timetables, to the right of the tables (suggested by Pietro, implemented by Volker Dirr).
 1683 	- Updated the Brazilian Portuguese translation, by Cloves das Neves.
 1684 	- Added two example files from Brazil, by Werner Bruns.
 1685 	- Added another sample file from Argentina, by pedrobordon.
 1686 - Version 5.21.1
 1687 	- Updated the sources to Qt 5.2.1 (but the precompiled Windows version still uses Qt 4.8.5, because of various problems).
 1688 	- Added an Albanian translation, by Artur Lugu.
 1689 	- Minor interface improvements.
 1690 - Version 5.21.2
 1691 	- Corrected a bug in two of the Brazil examples (the bug was introduced in the previous version).
 1692 - Version 5.21.3
 1693 	- Updated the Windows version to Qt 5.2.1.
 1694 ---------------------------------------------------------------------------------
 1695 Version 5.22.0
 1696 - Version 5.22.0
 1697 	- Updated to Qt 5.3.0.
 1698 	- Many improvements on memory and speed in pre-generating and after-generating.
 1699 	- Corrected a crash bug under Windows (for extremely large files).
 1700 	- Now you can unlock all activities or activities of a single day without generating the timetable (suggested by Volker Dirr).
 1701 	- Increased the maximum number of divisions in the first and second categories when dividing a year (suggested by Bobby Wise).
 1702 	- Added a new Morocco example file, by Mohamed Bahaj.
 1703 ---------------------------------------------------------------------------------
 1704 Versions 5.23.0 - 5.23.4
 1705 - Version 5.23.0
 1706 	- Updated to Qt 5.3.1.
 1707 	- Added a new timetabling generation option, to group selected activities in the initial order, next to the activity which is
 1708 	placed the earliest (suggested by Yush Yuen). This is useful in very rare cases of peculiar usage of constraint activities
 1709 	occupy max time slots from selection, or if you want to change the initial order of the activities by bringing some activities
 1710 	into front.
 1711 	- Improved the timetable shortcuts tab, by adding the print, locking and advanced push buttons.
 1712 - Version 5.23.1
 1713 	- The teachers' timetables now show the list of teachers for team teaching; also the students' timetables now show the list
 1714 	of students sets for team teaching or show the students set of the activity if it is different from the currently selected
 1715 	students set (suggested and implemented by Volker Dirr).
 1716 - Version 5.23.2
 1717 	- Fixed a building problem under C++11 (reported by pkgsrc packager Thomas Klausner, solved by Jörg Sonnenberger).
 1718 - Version 5.23.3
 1719 	- Updated to Qt 5.3.2.
 1720 	- Added a fet.desktop file (by Alexey Loginov).
 1721 	- Fixed some comments concerning the license (reported by Alexey Loginov).
 1722 	- Added a "make install" option (suggested by Alexey Loginov and other users, done by Zsolt Udvari and Liviu Lalescu).
 1723 	- Added an icon (suggested by Alexey Loginov and other users).
 1724 	- Added an option at compilation time so that FET automatically detects the system locale (suggested by Alexey Loginov and other users).
 1725 - Version 5.23.4
 1726 	- Added a partial Chinese Simplified (zh_CN) translation, by orange.
 1727 	- Added two example files from Vietnam, by Nguyen Huu Tuyen.
 1728 ---------------------------------------------------------------------------------
 1729 Version 5.24.0
 1730 - Version 5.24.0
 1731 	- Updated to Qt 5.4.0.
 1732 	- Significant speed improvements when using many students sets (suggested by Volker Dirr).
 1733 	- Speed improvements in the statistics menu.
 1734 	- Other speed improvements for larger data.
 1735 	- Added an option to hide students subgroups in combo boxes/activity planning (useful if you have too many students subgroups
 1736 	and you don't use them in the interface).
 1737 	- Added options to select the categories of timetables to write on the hard disk.
 1738 	- Automatic division of years by categories is improved (suggested by alxgudea, Bobby Wise and Volker Dirr).
 1739 	- Code improvement in reading the .fet XML files: converted from the obsolete Qt classes QDom* to QXmlStreamReader. It brings
 1740 	speed and memory improvements when reading the input files, and ensures FET source compatibility with future Qt versions.
 1741 	Also error reporting when reading a corrupt file is improved. The structure of the .fet XML files is slightly changed,
 1742 	but of course older files are opened correctly.
 1743 	- Several bug fixes, when trying to open corrupt files.
 1744 	- Other bug fixes, reported by Vanyo Georgiev.
 1745 	- It is now allowed to have constraints preferred/home rooms with a single room (suggested by liquid and Volker Dirr).
 1746 	- Added a new example file from Vietnam, by nguyenhuuduyet.
 1747 	- Added a new example file from Namibia, by Bobby Wise.
 1748 	- Added two anonymous example files.
 1749 ---------------------------------------------------------------------------------
 1750 Version 5.25.0
 1751 - Version 5.25.0
 1752 	- Improved the split year dialog: groups and subgroups which will exist in this year after the division will retain their activities and constraints.
 1753 	- Sort (temporarily) the constraints by description in the all time/space constraints dialogs. Also, removed the 'Sort by comments' button,
 1754 	which is probably useless.
 1755 	- Fixed a bug introduced in version 5.24.0: when having individually modified activities, removing teachers, subjects, activity tags,
 1756 	or students sets could remove only some components of the large split activity.
 1757 	- Some minor strings improvements.
 1758 ---------------------------------------------------------------------------------
 1759 Versions 5.26.0 - 5.26.2
 1760 - Version 5.26.0
 1761 	- FET is now licensed under the GNU Affero General Public License version 3 or later (suggested by Volker Dirr).
 1762 	- Improved the speed of importing from comma separated values (CSV) files, especially when dealing with many students sets.
 1763 	- Improved the speed of adding/modifying the (sub)activities from the corresponding dialogs (not noticeable, in usual cases).
 1764 	- Other speed improvements in the interface.
 1765 	- Leak and crash bug fixes (not usually met).
 1766 	- Some minor strings improvements.
 1767 	- Code cleanup.
 1768 - Version 5.26.1
 1769 	- Crash bug fix (probably never met, when using overlapping years) and improvements when removing students sets. Now you can completely remove a
 1770 	subgroup/group from a single button.
 1771 	- Added a test to report subgroups which have the same activities, so that the user can make generation faster by removing equivalent subgroups
 1772 	(if the user checks that the subgroups also have the same constraints).
 1773 	- Added a selectable option to show tool tips in the add/modify constraint dialogs which use tables (the tool tip is the day and the hour under
 1774 	the current cursor position). Suggested by Bob Hairgrove.
 1775 	- Updated the German translation, by Bob Hairgrove.
 1776 	- Code cleanup.
 1777 - Version 5.26.2
 1778 	- Updated to Qt 5.4.1.
 1779 	- Crash bug fix when generating with zero students sets (introduced in FET-5.26.0).
 1780 	- Added a partial Chinese Traditional (zh_TW) translation, by James.
 1781 	- Updated the German translation, by Bob Hairgrove.
 1782 ---------------------------------------------------------------------------------
 1783 Versions 5.27.0 - 5.27.9
 1784 - Version 5.27.0
 1785 	- Writing the statistics of the generated timetable (gaps, min/max hours, free days), implemented by Volker Dirr.
 1786 	- Updated the Chinese Traditional translation, by James.
 1787 - Version 5.27.1
 1788 	- Crash bug fix, when modifying a teacher after generating, and then viewing the timetable for that teacher without generating again.
 1789 	Reported by Yush Yuen.
 1790 	- Updated the German translation, by Bob Hairgrove.
 1791 - Version 5.27.2
 1792 	- Fixed a compilation error under CentOS 6 (reported by azaer).
 1793 - Version 5.27.3
 1794 	- Updated to Qt 5.4.2.
 1795 	- Added the "duration" filter in activities preferred starting times and preferred time slots (suggested by Volker Dirr and jillali elghazoui).
 1796 - Version 5.27.4
 1797 	- Updated to Qt 5.5.0.
 1798 	- Added a new complete French translation, by Pascal Cohen.
 1799 	- Minor bug fixes: some buttons were not translated (reported by Pascal Cohen).
 1800 	- Added a new example file from Algeria, by Laid Messaoudi.
 1801 - Version 5.27.5
 1802 	- Minor improvements.
 1803 - Version 5.27.6
 1804 	- Updated the sources to gcc-5.2.1 (but the Windows version still uses MinGW 4.9.2).
 1805 	- Minor improvements to the timetable and the statistics printing, by Volker Dirr (improved the margins handling).
 1806 - Version 5.27.7
 1807 	- Added a partial Basque translation, by Asier Urio Larrea.
 1808 	- Added a partial Czech translation, by Pavel Fric.
 1809 	- Improvement in the all time / space constraints dialogs: you can press activate / deactivate / modify the constraint and the focus
 1810 	will remain on the constraints list widget, so that you can press the up / down arrows directly, for easier operation (suggested by Volker Dirr).
 1811 - Version 5.27.8
 1812 	- Corrected a compilation bug under Qt ( >= 5.0 and < 5.3 ) (reported by Michel).
 1813 - Version 5.27.9
 1814 	- Corrected some typos (reported by locutusofborg).
 1815 	- Added a section Keywords in the fet.desktop file (reported by locutusofborg).
 1816 ---------------------------------------------------------------------------------
 1817 Versions 5.28.0 - 5.28.6
 1818 - Version 5.28.0
 1819 	- Crash bugs fixed (reported by Davide Cottignoli).
 1820 	- Removed useless CONFIG += thread from src.pro and src-cl.pro (reported by locutusofborg).
 1821 	- Corrected a few typos in the Italian translation, by flauta.
 1822 	- Updated the Italian translation, by Marco Barsotti.
 1823 - Version 5.28.1
 1824 	- Crash bug fix when the input file contained activities with duplicate students sets / teachers and the user
 1825 	renamed these students sets / teachers (reported by Volker Dirr).
 1826 	- When renaming a students year, the user can choose to rename also automatically the groups and subgroups
 1827 	contained in this year (suggested and implemented by Volker Dirr).
 1828 	- Added colors when viewing the timetable from the interface, if the option to use colors in the interface
 1829 	is selected (suggested and implemented by Marco Vassura).
 1830 - Version 5.28.2
 1831 	- Updated to Qt 5.5.1.
 1832 	- Source cleanup.
 1833 - Version 5.28.3
 1834 	- After a successful single generation (or after an impossible one), an attention sound will be emitted. Also, after all the timetables finished
 1835 	(successfully, impossibly, or with time limit exceeded) in a multiple generation, the same attention sound will be emitted (suggested by Maouhoub
 1836 	and uni_instructor).
 1837 	- Updated the Vietnamese translation, by Nguyễn Hữu Duyệt.
 1838 	- Updated the Arabic translation, by Silver.
 1839 	- Added a new Vietnamese example file, by Nguyễn Hữu Duyệt.
 1840 	- Added a new Namibian example file, by Bobby.
 1841 - Version 5.28.4
 1842 	- Bug fix: not allowing the file name to start with white space(s), as the HTML results do not work (reported by Volker Dirr).
 1843 	- Updated the Arabic translation, by Silver.
 1844 - Version 5.28.5
 1845 	- Bug fix: not allowing the file name to end with white space(s), as this may lead to errors (reported by Volker Dirr).
 1846 - Version 5.28.6
 1847 	- The user can now change the order of the teachers, students, subjects, activity tags, buildings, rooms, time constraints, and space constraints
 1848 	from the interface (suggested by Volker Dirr).
 1849 	- Added a new Indian example file, by Sudharshan K M and Nataraj Urs H D.
 1850 ---------------------------------------------------------------------------------
 1851 Versions 5.29.0 - 5.29.6
 1852 - Version 5.29.0
 1853 	- Updated to Qt 5.6.0.
 1854 	- Added the possibility of automatic coloring of the HTML timetables, using the HTML level 7 in the "Settings/Timetables" menu.
 1855 	Also, the user can color the timetables in a similar way from the "Timetable print" dialog.
 1856 	(Suggested by Handaya, hudrea and Udo Schütz, implemented by Volker Dirr and Liviu Lalescu, using also code by Marco Vassura.)
 1857 	- Code cleanup.
 1858 	- Brazilian Portuguese translation update, by Alexandre R. Soares.
 1859 	- Added a new Indian example file, by Jijo Jose.
 1860 	- Added two new Namibian example files, by Bobby.
 1861 - Version 5.29.1
 1862 	- The method of selection of the categories of timetables to be written on disk after generation is now improved (suggested by Alexandre R. Soares).
 1863 	- Brazilian Portuguese translation update, by Alexandre R. Soares.
 1864 - Version 5.29.2
 1865 	- Crash bugs fixed - the program crashed when renaming teachers/students and removing their attached constraints not available times
 1866 	(reported by Wizard).
 1867 	- Brazilian Portuguese translation update, by Alexandre R. Soares. It is now complete.
 1868 	- Code cleanup (improvements found by Volker Dirr using Cppcheck 1.73).
 1869 - Version 5.29.3
 1870 	- Code cleanup.
 1871 	- Corrected two minor typos in the source code (reported by Alexandre R. Soares).
 1872 - Version 5.29.4
 1873 	- Updated the sources to gcc-6.1.1 (but the Windows version still uses MinGW 4.9.2).
 1874 	- The code in the HTML timetables tries to avoid page breaks in the tables (suggested by Benahmed Abdelkrim, implemented by Volker Dirr).
 1875 - Version 5.29.5
 1876 	- Updated to Qt 5.6.1.
 1877 	- Rare crash bug fix in the activity planning form (reported by Benahmed Abdelkrim).
 1878 - Version 5.29.6
 1879 	- Updated to Qt 5.7.0 (thus, the Windows version now uses MinGW 5.3.0).
 1880 ---------------------------------------------------------------------------------
 1881 Versions 5.30.0 - 5.30.8
 1882 - Version 5.30.0
 1883 	- Bug fix: the 'Activities rooms statistics' did not work correctly: it considered even inactive constraints (reported by math user).
 1884 	- Added the possibility of selecting whether to print the detailed or the less detailed HTML timetables for the groups and years (suggested by math user,
 1885 	implemented by Volker Dirr and Liviu Lalescu).
 1886 	- Added the possibility of selecting whether to print the detailed or the less detailed HTML timetables for the free periods of the teachers (suggested by
 1887 	Volker Dirr and implemented by Volker Dirr and Liviu Lalescu).
 1888 	- Added the target number of hours for teachers (suggested by Volker Dirr and implemented by Volker Dirr and Liviu Lalescu).
 1889 	- Added the teachers' qualification to teach certain subjects, and the statistics to show where the qualification of a teacher for a subject is not respected
 1890 	 (suggested by Volker Dirr and implemented by Liviu Lalescu).
 1891 	- Added 12 new example files from Namibia, by Bobby Wise.
 1892 - Version 5.30.1
 1893 	- Interface improvement: the shortcut buttons on the main form are better arranged (suggested by math user).
 1894 - Version 5.30.2
 1895 	- Added more checks before the generation start (suggested by Léo-Paul Roch and Volker Dirr).
 1896 	- Very rare bug fixed (probably never met in practice).
 1897 - Version 5.30.3
 1898 	- Generating the activity tags timetables (suggested by Darren McDonald, implemented by Volker Dirr).
 1899 	- Added comments for teachers, students, subjects, activity tags, rooms and buildings (suggested by Volker Dirr and Anton Anthofer, implemented by Liviu Lalescu).
 1900 	- Very rare crash bugs fixed (reported by mouiata).
 1901 	- Added a new example file from Indonesia, by wahyuamin.
 1902 - Version 5.30.4
 1903 	- Minor bug fix in the HTML timetables (reported by ant7, fixed by Volker Dirr).
 1904 	- Reporting the number of broken (soft) constraints (suggested by Volker Dirr and mercurialuser).
 1905 	- Added a new example file from United Arab Emirates, by Darren McDonald.
 1906 - Version 5.30.5
 1907 	- Minor bug fix in the HTML timetables, by Volker Dirr.
 1908 	- Updated the Arabic translation, by Silver.
 1909 - Version 5.30.6
 1910 	- FET command-line now writes the impossible activity and the current and highest-stage timetables (which should be identical) after an impossible
 1911 	generation (suggested by thanhnambkhn).
 1912 	- Minor bug fix: when importing data from CSV, skipping the activity if its duration is less than 1 (reported by Malamojka, fixed by Volker Dirr).
 1913 - Version 5.30.7
 1914 	- Minor bug fix: when importing a file with 0 activities, there appeared a useless progress dialog. Also in other places with 0 data there might have appeared
 1915 	a useless progress dialog. Reported by Malamojka.
 1916 - Version 5.30.8
 1917 	- Updated to Qt 5.7.1.
 1918 	- A few Brazilian Portuguese translation bugs corrected (reported by rodolforg, fixed by Alexandre R. Soares).
 1919 ---------------------------------------------------------------------------------
 1920 Versions 5.31.0 - 5.31.9
 1921 - Version 5.31.0
 1922 	- Updated to Qt 5.8.0.
 1923 	- Added a new type of constraint: teacher(s)/students (set) max span per day (the maximum time spent in the institution on a day).
 1924 	Suggested by Vangelis Karafillidis and rodolforg.
 1925 	- Added a new type of constraint: teacher(s)/students (set) min resting hours (the minimum free time slots between the last working hour on a day and
 1926 	the first working hour on the next day). Suggested by rodolforg.
 1927 	- Fixed some typos in the German translation (reported by math user, corrected by Bob Hairgrove).
 1928 	- Added 3 new example files from Namibia, by Bobby Wise.
 1929 - Version 5.31.1
 1930 	- Bug fix: when importing rooms and buildings from CSV (comma separated values) files, if some rooms were in the same building, the building was added
 1931 	more times. Reported by Abou, fixed by Volker Dirr and Liviu Lalescu, along with other minor import things.
 1932 	- When the user selects the filter in the all time/space constraints dialogs, the first line edit will get focus and its text will be selected,
 1933 	for easier navigation with the keyboard. Suggested by math user.
 1934 - Version 5.31.2
 1935 	- Each activity tag now has an additional property, "Printable", so that you can show/hide each individual activity tag in the HTML timetables and in
 1936 	the printout of the timetables from the interface (suggested by Malamojka, rodolforg, and math user).
 1937 	- Bug fixes in the HTML timetables and in the printout of the timetables from the interface (reported by Volker Dirr and math user).
 1938 	- Added a new example file from Russia, by Julio González Gil.
 1939 	- Added a new anonymous example file, by Matsumoto.
 1940 - Version 5.31.3
 1941 	- Speed improvement in the precomputation if using many rooms and many buildings.
 1942 	- Updated the Arabic translation, by Benahmed Abdelkrim. It is now complete.
 1943 - Version 5.31.4
 1944 	- Bug fix in the printout of the subjects' timetables (reported by math user).
 1945 	- Updated the Arabic translation, by Benahmed Abdelkrim and Silver.
 1946 - Version 5.31.5
 1947 	- Rare crash bugs fixed. These bugs appeared when removing a teacher/students set with attached constraints not available. Reported by Benahmed Abdelkrim.
 1948 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 1949 - Version 5.31.6
 1950 	- Bug fix (if there were used subjects containing the special characters &, ", >, <, and ', and if there were teachers having as qualified subjects
 1951 	these subjects, FET could not open the .fet data file anymore) - reported by bart.leyen.
 1952 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 1953 - Version 5.31.7
 1954 	- Updated to Qt 5.9.1.
 1955 	- Added filters in the following dialogs of constraints for activities: same starting day, same starting hour, two activities ordered,
 1956 	two activities consecutive, two activities grouped, three activities grouped (suggested by math).
 1957 	- Added the possibility to swap the two selected activities in the add/modify constraint dialogs for the constraints of type two activities ordered and
 1958 	two activities consecutive (suggested by math).
 1959 	- Updated the German translation, by Volker Dirr.
 1960 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 1961 - Version 5.31.8
 1962 	- Bug fix: when importing rooms without any building from a CSV file there were added no rooms to the data. Reported by Robinson A. Lemos and Maurino C. Maria,
 1963 	fixed by Volker Dirr.
 1964 - Version 5.31.9
 1965 	- Bug fix in the German translation. Reported by math, corrected by Bob Hairgrove.
 1966 ---------------------------------------------------------------------------------
 1967 Versions 5.32.0 - 5.32.3
 1968 - Version 5.32.0
 1969 	- Implemented the teachers' and students' timetable view time horizontal from the FET interface, for easier locking/unlocking/generating a partially locked timetable.
 1970 	Suggested by Vangelis Karafillidis, who did a great job with his useful suggestions and reports. Also Volker Dirr had some useful suggestions for this new feature.
 1971 	- Added the en_GB (British English) locale, so that the date/time in the generated timetables can be shown in British format (suggested by rjmillett. It was also
 1972 	previously suggested by Mr Robo).
 1973 - Version 5.32.1
 1974 	- Corrected a few compilation errors on older compilers (reported by Valdo, fixed by rodolforg and Liviu Lalescu).
 1975 	- Implemented the rooms' timetable view time horizontal from the FET interface (suggested by sigit_yuwono).
 1976 	- In the timetable view time horizontal dialogs the activities which are locked in space are shown with an italic font (suggested by Vangelis Karafillidis).
 1977 - Version 5.32.2
 1978 	- Crash bug fixed (rare, if adding an activity without students sets which had a specified number of students greater than 0). Reported by Zsolt Udvari.
 1979 - Version 5.32.3
 1980 	- Code cleanup (by Liviu Lalescu and Volker Dirr).
 1981 	- Updated the Brazilian Portuguese translation, by Alexandre R. Soares.
 1982 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 1983 ---------------------------------------------------------------------------------
 1984 Versions 5.33.0 - 5.33.3
 1985 - Version 5.33.0
 1986 	- Very rare but important generation bug fixed. In some cases, for feasible timetables, the generation might cycle incorrectly. This is an old bug,
 1987 	affecting files with constraints students/teachers max hours daily and max gaps per day/week, but nobody observed it until now. Reported by Volker Dirr.
 1988 	A big 'Thank you!' to Volker, for being very supportive in hunting down this bug.
 1989 	- Added the number of working hours for the teachers and the students in the HTML timetables statistics (suggested by Fernando A F Lordão, implemented by
 1990 	Volker Dirr).
 1991 	- Added a new Algerian example file, by Benahmed Abdelkrim.
 1992 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 1993 - Version 5.33.1
 1994 	- Bug fix: when moving rooms/buildings up/down in their corresponding dialogs, the description on the right was not updated correspondingly.
 1995 	Reported by chernous.
 1996 - Version 5.33.2
 1997 	- Updated to Qt 5.9.2.
 1998 	- Added a new complete Spanish translation, by Emiliano Llano Díaz, who is the new translator.
 1999 	- The homepage of FET was updated to use SSL (https protocol instead of http).
 2000 	- Code cleanup.
 2001 - Version 5.33.3
 2002 	- Updated the Spanish translation, by Emiliano Llano Díaz.
 2003 	- Code cleanup.
 2004 ---------------------------------------------------------------------------------
 2005 Versions 5.34.0 - 5.34.3
 2006 - Version 5.34.0
 2007 	- Improved the activity planning dialog, by Volker Dirr. Now the user can swap the teachers of one or more activities.
 2008 	- Added the possibility of exporting the data and the timetable as CSV (comma separated values) files from the command line version of FET
 2009 	(suggested by Matthias Söllner and m).
 2010 - Version 5.34.1
 2011 	- Updated to Qt 5.10.0.
 2012 	- Corrected a compilation warning that appeared in FET when using the new Qt 5.10.0 (class QSignalMapper is now deprecated).
 2013 - Version 5.34.2
 2014 	- Corrected the style/appearance of precompiled FET for Windows 7 (added a missing DLL).
 2015 - Version 5.34.3
 2016 	- Minor corrections in the Romanian translation, by Liviu Lalescu.
 2017 ---------------------------------------------------------------------------------
 2018 Versions 5.35.0 - 5.35.7
 2019 - Version 5.35.0
 2020 	- Bug fix: when unplugging a display, the dialogs which were previously shown on this display were not shown correctly on the remaining active display(s)
 2021 	(instead, they were invisible). Reported by kdrosos and sigit_yuwono.
 2022 	- Minor bugs fixed (reported by Vangelis Karafillidis).
 2023 	- Added a partial Japanese translation, by Taro Tada.
 2024 	- Added a new partial Greek translation, by Vangelis Karafillidis, who is the new translator.
 2025 	- Updated the Czech translation, by Pavel Fric.
 2026 - Version 5.35.1
 2027 	- The alphabetic sorting of the items now respects the user's locale (the special characters are better ordered).
 2028 	Suggestions and code by rodolforg. Also, there were used suggestions and code found on qtcentre.org, in a post by ChrisW67.
 2029 	- Improved the translation procedure of some fields. Suggestion and code by rodolforg.
 2030 	- Minor strings bugs fixed (reported by Vangelis Karafillidis).
 2031 	- Improvement in the Romanian translation: instead of a cedilla, the special characters ș, ț, Ș, and Ț now use a small comma beneath them
 2032 	(as recommended by dexonline.ro and cum-scriem-corect.blogspot.ro).
 2033 - Version 5.35.2
 2034 	- Minor strings bugs fixed (reported by Innocent De Marchi).
 2035 	- Updated the Turkish translation, by Yakup Kadri Demirci, who is the new translator.
 2036 	- Updated the Greek translation, by Vangelis Karafillidis.
 2037 	- Updated the Japanese translation, by Taro Tada.
 2038 - Version 5.35.3
 2039 	- Updated to Qt 5.10.1.
 2040 	- Minor strings bugs fixed (reported by Vangelis Karafillidis).
 2041 	- Updated the Catalan translation (which is now complete), by Innocent De Marchi, who is the new translator.
 2042 	- Updated the Japanese translation, by Taro Tada.
 2043 	- Updated the Greek translation, by Vangelis Karafillidis.
 2044 - Version 5.35.4
 2045 	- Fixed two compilation errors under the Microsoft Visual C++ compiler (reported by Volker Dirr). Now FET can be compiled with this compiler.
 2046 	- The Help->About dialog of FET is now easily translatable into other languages (suggested by rodolforg, Innocent De Marchi, and other users).
 2047 	- Minor string bug fixed (reported by Vangelis Karafillidis).
 2048 	- Updated the Greek translation, by Vangelis Karafillidis.
 2049 	- Added a new example file from Brazil, by francescotorres.
 2050 - Version 5.35.5
 2051 	- Bug fix when using the old Qt 4: the special characters in the Help->About dialog were incorrectly displayed (bug introduced in the previous version, 5.35.4).
 2052 	- Minor fix: the example file translations/test-all-constraints.fet which should contain all the types of constraints was missing two of them. Corrected.
 2053 	- Updated the Greek translation, by Vangelis Karafillidis.
 2054 - Version 5.35.6
 2055 	- Minor strings bugs fixed (reported by Vangelis Karafillidis).
 2056 	- Updated the Greek translation, by Vangelis Karafillidis. It is now complete.
 2057 - Version 5.35.7
 2058 	- Updated to Qt 5.11.0.
 2059 	- Corrected a few compilation warnings that appeared in FET when using the new Qt 5.11.0.
 2060 	- Code cleanup (by Volker Dirr).
 2061 	- Improved the command-line operation on Windows (since this platform misses/ignores SIGTERM, we use instead SIGBREAK to write the current and
 2062 	highest-stage timetables, then stop the program). Suggested by svenvanhal.
 2063 ---------------------------------------------------------------------------------
 2064 Versions 5.36.0 - 5.36.2
 2065 -Version 5.36.0
 2066 	- Added a new constraint, two activities are ordered if they are on the same day (suggested by math).
 2067 	- The students' combo boxes can now be shown in three styles: simple (the old style), with icons, or categorized (suggested by math).
 2068 	- The view students' timetable days horizontal dialog was improved. Now the user can see the timetable for each year/each group/each subgroup (as before),
 2069 	for all years/each group/each subgroup, or for all years/all groups/each subgroup. Suggested by math.
 2070 	- The languages dialog now contains the untranslated description of each language (suggested by Volker Dirr).
 2071 	- Corrected a command-line bug: argument '--warnifusinggroupactivitiesininitialorder=true|false' was ignored. Reported by svenvanhal.
 2072 	- Corrected two compilation warnings (reported by Innocent De Marchi).
 2073 	- Corrected two bugs in the German translation (reported by math).
 2074 	- Corrected a few bugs in the translations.
 2075 - Version 5.36.1
 2076 	- Updated to Qt 5.11.1.
 2077 	- The add activity, modify activity, and modify subactivity dialogs now have an option to show all the teachers or only the qualified teachers for
 2078 	the chosen subject (suggested by Volker Dirr).
 2079 	- The main check boxes and radio buttons in the activities, subactivities, add activity, modify activity, and modify subactivity dialogs now save
 2080 	and restore their state (suggested by Volker Dirr).
 2081 	- Added information about potential privacy issues if enabling the 'Search for updates on startup' option.
 2082 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 2083 - Version 5.36.2
 2084 	- When viewing the activity details in the timetable view dialogs, if a room is allocated for this activity, there will also be shown the
 2085 	building and the capacity of this room (suggested by Diego Froner).
 2086 	- Added the feature of locking and unlocking all the activities having attached a certain activity tag (suggested by Diego Froner).
 2087 	- Bug fix in the unlocking of activities of a certain day if the timetable was not generated: If the user selected only space unlocking, no activities
 2088 	were unlocked.
 2089 ---------------------------------------------------------------------------------
 2090 Versions 5.37.0 - 5.37.5
 2091 - Version 5.37.0
 2092 	- Code update: removed the dependency of the obsolete Qt 'foreach' keyword (suggested by Volker Dirr). The speed of generation is improved by 5%-25%,
 2093 	depending on the data file. Now you need a C++11 compliant compiler to compile FET.
 2094 	- Updated the German example files from secondary school 1, by Volker Dirr.
 2095 	- Updated all the example files to use the latest file format.
 2096 - Version 5.37.1
 2097 	- Rare crash bug fixed, appearing when viewing the timetable, then modifying some data (like increasing the number of days per week or hours per day)
 2098 	without closing the timetable view dialogs, and then regenerating. Reported by liquid.
 2099 	- The opened timetable view dialogs are now better updated after a successful or unsuccessful generation (suggested by Volker Dirr).
 2100 	- The constraints of type subactivities preferred starting times and subactivities preferred time slots now include a 'duration' filter (suggested by
 2101 	Léo-Paul Roch and Volker Dirr).
 2102 	- The limit for the maximum number of generated timetables in a multiple generation is increased from 100 to 1000 (suggested by Volker Dirr).
 2103 	- Code cleanup (suggested by Volker Dirr).
 2104 - Version 5.37.2
 2105 	- Fixed a compilation problem when using Qt >= 5.0.0 and < 5.7.0. Reported by yakup.
 2106 	- Crash bug fix (usually not met in practice), when opening a file containing duplicate activities id-s. Reported by Ahmed Ben Hassan.
 2107 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 2108 	- Volker Dirr's site now uses SSL (https protocol instead of http).
 2109 - Version 5.37.3
 2110 	- Updated to Qt 5.12.0.
 2111 	- When compiling with Qt 5, FET uses the better QRegularExpression class instead of the deprecated QRegExp class (which is only used if the user
 2112 	compiles with the old Qt 4).
 2113 	- Crash bug fixed when adding a constraint min days between activities and the number of the days per week is 1 (probably very rare).
 2114 	- Improved the import: the automatic selection of fields will now work even if there is no text quote around the fields (suggested by Jude G,
 2115 	implemented by Volker Dirr).
 2116 	- Minor string fixes in the CSV import/export dialogs.
 2117 	- Minor improvement: the attributes of the file fet.desktop, found in the sources archive of FET, were corrected.
 2118 - Version 5.37.4
 2119 	- Automatic check for updates on startup is working correctly now (using fixes found on Stack Overflow and on Amin Ahmadi's site).
 2120 - Version 5.37.5
 2121 	- Minor improvement (automatic check for updates also sends to the server the user's processor architecture type, as other programs usually do) - suggested
 2122 	and implemented by Volker Dirr.
 2123 	- Updated the translations.
 2124 ---------------------------------------------------------------------------------
 2125 Versions 5.38.0 - 5.38.1
 2126 - Version 5.38.0
 2127 	- Updated to Qt 5.12.3.
 2128 	- Added a new type of constraint: min gaps between an ordered pair of activity tags for a students set / all students / a teacher / all teachers,
 2129 	suggested by Nagendra and other users.
 2130 	- Bug fixes and code cleanup.
 2131 	- Minor bug fix: the modify constraint room not available times dialog did not allow the weight to be set to 0%, a value which should have been permitted.
 2132 	Reported by math.
 2133 	- Added two new example files from Hungary, by Madas Pál.
 2134 	- Added a new example file from Tunisia, by fourat.
 2135 	- Added a new example file from India, by Nagendra.
 2136 - Version 5.38.1
 2137 	- Updated to Qt 5.13.0.
 2138 	- Very rare crash bug fixed, when executing fet-cl on an incorrect input file with the option to export the CSV files. Reported by Xingxing.
 2139 	- Code cleanup (fixed some compiler warnings which appeared with the new Qt 5.13.0).
 2140 ---------------------------------------------------------------------------------
 2141 Version 5.39.0
 2142 - Version 5.39.0
 2143 	- Added a new type of constraint: activity tags not overlapping (suggested by Henrique Belo).
 2144 	- Speed improvement in the pre-generation routine, if the data file contains constraints of type activities not overlapping.
 2145 ---------------------------------------------------------------------------------
 2146 Versions 5.40.0 - 5.40.3
 2147 - Version 5.40.0
 2148 	- Updated to Qt 5.13.1.
 2149 	- Added virtual rooms, which give the possibility for the user to specify more rooms for an activity, or to choose between a large room or more smaller
 2150 	rooms for an activity, and might open the possibilities for other kinds of usage. Suggested by math on the forum, who had some very useful ideas.
 2151 	These users also suggested more rooms for an activity: Volker Dirr, Anton Anthofer, dasa, sln_rj, and amin.
 2152 	Unfortunately, this feature might make FET about 5-10% slower even if you are not using virtual rooms, and I apologize for this,
 2153 	but virtual rooms are useful.
 2154 	- Added the possibility to allow a one day exception of max span plus one for the constraints of type teacher(s) max span per day
 2155 	(suggested by totera, Luca, and bachiri401).
 2156 	- Bug fix: now it is not allowed to run FET command-line on files which do not contain any activity.
 2157 	- Minor bug fix when using constraints with weights having 5 or 6 digits after the decimal dot (like 99.999975%). This minor bug did not affect
 2158 	the generation, only the final report of the (soft) conflicts.
 2159 	- Minor bug fix in the import of the rooms and of the buildings, by Volker Dirr.
 2160 	- Added a new example file from Romania, by rapsy.
 2161 - Version 5.40.1
 2162 	- Bug fix: if using virtual rooms, when generating a new timetable and locking it, some constraints of type activity preferred room could be added again,
 2163 	even if they were already present, if the real rooms chosen for the virtual room were the same but in a different order (the order should not matter).
 2164 - Version 5.40.2
 2165 	- Various rare but important bug fixes concerning the new feature of virtual rooms.
 2166 	- Small memory leak bug fixed (when reading incorrect files with virtual rooms).
 2167 	- Minor fixes and improvements.
 2168 	- Added a new example file from Greece, by dimzev.
 2169 - Version 5.40.3
 2170 	- Updated to Qt 5.13.2.
 2171 	- Code cleanup.
 2172 	- Added two new example files from Syria, by Zafar Allah Askar.
 2173 ---------------------------------------------------------------------------------
 2174 Version 5.41.0
 2175 - Version 5.41.0
 2176 	- Implemented these types of constraints: teacher(s)/students (set) activity tag min hours daily (suggested by Chafik Graiguer, Pietro,
 2177 	Vangelis Karafillidis, Benahmed Abdelkrim, s.lanore, and maybe other users). These constraints types are not perfect and must be enabled
 2178 	from the settings menu.
 2179 	- Implemented the constraint type activities occupy min time slots from selection (suggested by flauta, Vangelis Karafillidis, and math).
 2180 	- Implemented the constraint type activities min simultaneous in selected time slots (suggested by Vangelis Karafillidis).
 2181 	- Implemented these types of constraints: teacher(s)/students (set) max room changes per day/week, and teacher(s)/students (set) min gaps
 2182 	between room changes (suggested by Benahmed Abdelkrim, abdeljalil elghazoui, otman hashem, Ahmed El Hawary, Abdellah Sabri, khatou1973,
 2183 	nachrach111, Omar Ben Ali, forstera, and maybe other users).
 2184 	- Code improvements in the generation code of the constraints of type teacher(s) max span per day when allowing a one day exception of
 2185 	max span plus one.
 2186 	- Code improvements in the generation code of the constraints of type activities occupy max time slots from selection
 2187 	and activities max simultaneous in selected time slots.
 2188 	- Improved the activity planning dialog, by Volker Dirr (one improvement - to swap the students sets - was suggested by uni_instructor).
 2189 	- The activity planning dialog is now accessible by a keyboard shortcut (Ctrl+A in English, maybe other letters in other languages)
 2190 	(suggested by uni_instructor).
 2191 	- Removed a useless computation that was done after the generation (suggested by Marco Diego Aurélio Mesquita).
 2192 	- Various other code improvements/cleanup.
 2193 	- Added a new example file from Algeria, by Lysso.
 2194 ---------------------------------------------------------------------------------
 2195 Versions 5.42.0 - 5.42.3
 2196 - Version 5.42.0
 2197 	- Updated to Qt 5.14.0.
 2198 	- Corrected many warnings appearing with the new Qt 5.14.0 (about using deprecated Qt functions).
 2199 	- Minor speed improvements when using the constraints involving room/building changes for students/teachers.
 2200 	- Crash bug fixed when reading a file which was not in the FET XML format (probably not met in practice). Now FET reports that it is an
 2201 	incorrect file.
 2202 	- Bug fix: when opening the students' timetable view days horizontal dialog with the subgroups list variant selected, the details for the
 2203 	current activity were not shown. Also, in this case, locking the selected activities did not work. Reported by math.
 2204 	- Minor bug fixes in the activity planning dialog: when swapping the teachers/students, their initial order in the related activities
 2205 	might not have been preserved.
 2206 	- Code cleanup.
 2207 - Version 5.42.1
 2208 	- Bug fix: the command-line version of FET did not remove the file logs/difficult_activities.txt before a new generation, if it was written
 2209 	by a previous unsuccessful generation.
 2210 	- Minor code improvements and cleanup.
 2211 	- Added more proper acknowledgments and references for the used libraries.
 2212 - Version 5.42.2
 2213 	- Minor improvements.
 2214 - Version 5.42.3
 2215 	- Updated to Qt 5.14.1.
 2216 	- When opening a file containing unrecognized XML tags, FET will issue a warning and indicate their locations. Reported by math.
 2217 	- Minor fix/improvement for the Mac OS X version: the "About FET" menu item was shown/executed incorrectly (reported by Darren McDonald and math).
 2218 	Also, with this occasion, the "Quit" menu item was linked to the specific recommended menu place for this platform.
 2219 	- Minor improvements.
 2220 	- Updated the Spanish translation, by Emiliano Llano Díaz.
 2221 ---------------------------------------------------------------------------------
 2222 Versions 5.43.0 - 5.43.2
 2223 - Version 5.43.0
 2224 	- Updated the code for the future Qt versions: removed usage of QLinkedList, of Java-style iterators, of the soon-to-be obsolete function
 2225 	QNetworkReply::error(), and of some obsolete Qt signals, and changed from endl to Qt::endl in the necessary places.
 2226 	These changes are not visible to the user.
 2227 	- Many code improvements/cleanup in the interface part.
 2228 	- Exporting of the advanced statistics to the disk now centers the text contents of the table cells.
 2229 	- Improved the command-line usage instructions (suggested by Zsolt Udvari). They are now easier to read. Also, running the command-line
 2230 	version will create log/results files/directories only if an input file is given.
 2231 - Version 5.43.1
 2232 	- Minor bug fix: the constraint students (set) max days per week allowed a minimum value of 0 max days per week. Now the minimum value is correctly 1.
 2233 	Reported by bachiri401.
 2234 	- Slightly improved the dialogs for the constraints of type activity/subject/activity tag/subject+activity tag preferred room(s) (suggested by bachiri401).
 2235 	- Code update/cleanup.
 2236 - Version 5.43.2
 2237 	- Corrected a compiler error appearing with the future Qt versions (this bug was introduced in FET version 5.43.0: the function
 2238 	QNetworkReply::error() will not be obsolete and the replacement function QNetworkReply::networkError() was dropped. So we needed
 2239 	to revert this also in the FET code, otherwise we would get a compiler error with the future Qt versions).
 2240 	- Updated the code for the future Qt versions: removed usage of the soon-to-be obsolete constant QString::SkipEmptyParts
 2241 	(the future constant will be Qt::SkipEmptyParts).
 2242 ---------------------------------------------------------------------------------
 2243 Versions 5.44.0 - 5.44.9
 2244 - Version 5.44.0
 2245 	- Changed the random number generator to a better one, MRG32k3a, by Pierre L'Ecuyer (used with permission). This has a longer period but, unfortunately,
 2246 	on some older/not so powerful computers/platforms (especially the 32-bit ones), this new random number generator might run (much) slower. But the generation
 2247 	time should be generally nearly the same or comparable, since the random numbers generation routine seems to take only about 3% of the generation time.
 2248 	- Bug fix for the future Qt versions: Qt reverted back from the signal QComboBox::currentIndexChanged(int, const QString &) used in their snapshot
 2249 	to the signal QComboBox::currentIndexChanged(int). The combo boxes should now work correctly with the future versions of Qt.
 2250 	- Code cleanup.
 2251 - Version 5.44.1
 2252 	- Updated to Qt 5.14.2.
 2253 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 2254 	- Minor fixes.
 2255 - Version 5.44.2
 2256 	- Bug fix: when using constraints activity tags not overlapping with the activity tags names containing the special characters &, >, or < (and possibly " or '),
 2257 	the saved file would be corrupted and could not be reopened without firstly correcting it manually. Reported by Darren McDonald.
 2258 - Version 5.44.3
 2259 	- Minor fixes and code cleanup.
 2260 - Version 5.44.4
 2261 	- Bug fix: the program froze when hiding rows or columns in the activity planning dialog. This bug was introduced in version 5.43.0. Reported by Dietmar Deuster.
 2262 	- Code improvements.
 2263 - Version 5.44.5
 2264 	- Minor fixes and code cleanup.
 2265 - Version 5.44.6
 2266 	- Minor fixes in the all time/space constraints dialogs.
 2267 	- Removed the warning that was issued when the user selected a higher HTML level for the generated timetables (if the selected HTML level was 3 or higher,
 2268 	the program warned of possible large file sizes).
 2269 	- Minor code improvements.
 2270 	- Code cleanup.
 2271 - Version 5.44.7
 2272 	- Code improvements/cleanup in the generate function.
 2273 - Version 5.44.8
 2274 	- Updated to Qt 5.15.0.
 2275 	- Code cleanup.
 2276 - Version 5.44.9
 2277 	- Corrected the source files of the application icons and generated higher resolution ones (suggested by Darren McDonald, using additional suggestions
 2278 	from Vangelis Karafillidis and DT). The application icon in the icns format (used on Mac OS X) was contributed by Darren McDonald.
 2279 	- The application name is now set correctly (using a solution found by Darren McDonald).
 2280 ---------------------------------------------------------------------------------
 2281 Versions 5.45.0 - 5.45.v
 2282 - Version 5.45.0
 2283 	- Slightly improved the code for the constraints of type teacher(s)/students (set) max days per week and teacher(s)/students (set) interval max days per week.
 2284 	- Corrected a compilation warning appearing with the new gcc 10.1.1.
 2285 	- Updated the Arabic translation, by Benahmed Abdelkrim.
 2286 - Version 5.45.1
 2287 	- Minor fixes and code cleanup.
 2288 	- Added a new example file from South Africa, by Eric Carolus.
 2289 	- Updated the Arabic translation, by Benahmed Abdelkrim.