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    1 HISTORY of the LZMA SDK
    2 -----------------------
    3 
    4 9.18 beta      2010-11-02
    5 -------------------------	
    6 - New small SFX module for installers (SfxSetup).
    7 
    8 
    9 9.12 beta      2010-03-24
   10 -------------------------
   11 - The BUG in LZMA SDK 9.* was fixed: LZMA2 codec didn't work,
   12   if more than 10 threads were used (or more than 20 threads in some modes).
   13 
   14 
   15 9.11 beta      2010-03-15
   16 -------------------------
   17 - PPMd compression method support
   18    
   19 
   20 9.09           2009-12-12
   21 -------------------------
   22 - The bug was fixed:
   23    Utf16_To_Utf8 funstions in UTFConvert.cpp and 7zMain.c
   24    incorrectly converted surrogate characters (the code >= 0x10000) to UTF-8.
   25 - Some bugs were fixed
   26 
   27 
   28 9.06           2009-08-17
   29 -------------------------
   30 - Some changes in ANSI-C 7z Decoder interfaces.
   31 
   32 
   33 9.04           2009-05-30
   34 -------------------------
   35 - LZMA2 compression method support
   36 - xz format support
   37 
   38 
   39 4.65           2009-02-03
   40 -------------------------
   41 - Some minor fixes
   42 
   43 
   44 4.63           2008-12-31
   45 -------------------------
   46 - Some minor fixes
   47 
   48 
   49 4.61 beta      2008-11-23
   50 -------------------------
   51 - The bug in ANSI-C LZMA Decoder was fixed:
   52     If encoded stream was corrupted, decoder could access memory 
   53     outside of allocated range.
   54 - Some changes in ANSI-C 7z Decoder interfaces.
   55 - LZMA SDK is placed in the public domain.
   56 
   57 
   58 4.60 beta      2008-08-19
   59 -------------------------
   60 - Some minor fixes.
   61 
   62 
   63 4.59 beta      2008-08-13
   64 -------------------------
   65 - The bug was fixed:
   66     LZMA Encoder in fast compression mode could access memory outside of 
   67     allocated range in some rare cases.
   68 
   69 
   70 4.58 beta      2008-05-05
   71 -------------------------
   72 - ANSI-C LZMA Decoder was rewritten for speed optimizations.
   73 - ANSI-C LZMA Encoder was included to LZMA SDK.
   74 - C++ LZMA code now is just wrapper over ANSI-C code.
   75 
   76 
   77 4.57           2007-12-12
   78 -------------------------
   79 - Speed optimizations in ++ LZMA Decoder. 
   80 - Small changes for more compatibility with some C/C++ compilers.
   81 
   82 
   83 4.49 beta      2007-07-05
   84 -------------------------
   85 - .7z ANSI-C Decoder:
   86      - now it supports BCJ and BCJ2 filters
   87      - now it supports files larger than 4 GB.
   88      - now it supports "Last Write Time" field for files.
   89 - C++ code for .7z archives compressing/decompressing from 7-zip 
   90   was included to LZMA SDK.
   91   
   92 
   93 4.43           2006-06-04
   94 -------------------------
   95 - Small changes for more compatibility with some C/C++ compilers.
   96   
   97 
   98 4.42           2006-05-15
   99 -------------------------
  100 - Small changes in .h files in ANSI-C version.
  101   
  102 
  103 4.39 beta      2006-04-14
  104 -------------------------
  105 - The bug in versions 4.33b:4.38b was fixed:
  106   C++ version of LZMA encoder could not correctly compress 
  107   files larger than 2 GB with HC4 match finder (-mfhc4).
  108   
  109 
  110 4.37 beta      2005-04-06
  111 -------------------------
  112 - Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. 
  113 
  114 
  115 4.35 beta      2005-03-02
  116 -------------------------
  117 - The bug was fixed in C++ version of LZMA Decoder:
  118     If encoded stream was corrupted, decoder could access memory 
  119     outside of allocated range.
  120 
  121 
  122 4.34 beta      2006-02-27
  123 -------------------------
  124 - Compressing speed and memory requirements for compressing were increased
  125 - LZMA now can use only these match finders: HC4, BT2, BT3, BT4
  126 
  127 
  128 4.32           2005-12-09
  129 -------------------------
  130 - Java version of LZMA SDK was included
  131 
  132 
  133 4.30           2005-11-20
  134 -------------------------
  135 - Compression ratio was improved in -a2 mode
  136 - Speed optimizations for compressing in -a2 mode
  137 - -fb switch now supports values up to 273
  138 - The bug in 7z_C (7zIn.c) was fixed:
  139   It used Alloc/Free functions from different memory pools.
  140   So if program used two memory pools, it worked incorrectly.
  141 - 7z_C: .7z format supporting was improved
  142 - LZMA# SDK (C#.NET version) was included
  143 
  144 
  145 4.27 (Updated) 2005-09-21
  146 -------------------------
  147 - Some GUIDs/interfaces in C++ were changed.
  148  IStream.h:
  149    ISequentialInStream::Read now works as old ReadPart
  150    ISequentialOutStream::Write now works as old WritePart
  151 
  152 
  153 4.27           2005-08-07
  154 -------------------------
  155 - The bug in LzmaDecodeSize.c was fixed:
  156    if _LZMA_IN_CB and _LZMA_OUT_READ were defined,
  157    decompressing worked incorrectly.
  158 
  159 
  160 4.26           2005-08-05
  161 -------------------------
  162 - Fixes in 7z_C code and LzmaTest.c:
  163   previous versions could work incorrectly,
  164   if malloc(0) returns 0
  165 
  166 
  167 4.23           2005-06-29
  168 -------------------------
  169 - Small fixes in C++ code
  170 
  171 
  172 4.22           2005-06-10
  173 -------------------------
  174 - Small fixes
  175 
  176 
  177 4.21           2005-06-08
  178 -------------------------
  179 - Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed
  180 - New additional version of ANSI-C LZMA Decoder with zlib-like interface:
  181     - LzmaStateDecode.h
  182     - LzmaStateDecode.c
  183     - LzmaStateTest.c
  184 - ANSI-C LZMA Decoder now can decompress files larger than 4 GB
  185 
  186 
  187 4.17           2005-04-18
  188 -------------------------
  189 - New example for RAM->RAM compressing/decompressing: 
  190   LZMA + BCJ (filter for x86 code):
  191     - LzmaRam.h
  192     - LzmaRam.cpp
  193     - LzmaRamDecode.h
  194     - LzmaRamDecode.c
  195     - -f86 switch for lzma.exe
  196 
  197 
  198 4.16           2005-03-29
  199 -------------------------
  200 - The bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder): 
  201    If _LZMA_OUT_READ was defined, and if encoded stream was corrupted,
  202    decoder could access memory outside of allocated range.
  203 - Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster).
  204   Old version of LZMA Decoder now is in file LzmaDecodeSize.c. 
  205   LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c
  206 - Small speed optimization in LZMA C++ code
  207 - filter for SPARC's code was added
  208 - Simplified version of .7z ANSI-C Decoder was included
  209 
  210 
  211 4.06           2004-09-05
  212 -------------------------
  213 - The bug in v4.05 was fixed:
  214     LZMA-Encoder didn't release output stream in some cases.
  215 
  216 
  217 4.05           2004-08-25
  218 -------------------------
  219 - Source code of filters for x86, IA-64, ARM, ARM-Thumb 
  220   and PowerPC code was included to SDK
  221 - Some internal minor changes
  222 
  223 
  224 4.04           2004-07-28
  225 -------------------------
  226 - More compatibility with some C++ compilers
  227 
  228 
  229 4.03           2004-06-18
  230 -------------------------
  231 - "Benchmark" command was added. It measures compressing 
  232   and decompressing speed and shows rating values. 
  233   Also it checks hardware errors.
  234 
  235 
  236 4.02           2004-06-10
  237 -------------------------
  238 - C++ LZMA Encoder/Decoder code now is more portable
  239   and it can be compiled by GCC on Linux.
  240 
  241 
  242 4.01           2004-02-15
  243 -------------------------
  244 - Some detection of data corruption was enabled.
  245     LzmaDecode.c / RangeDecoderReadByte
  246     .....
  247     {
  248       rd->ExtraBytes = 1;
  249       return 0xFF;
  250     }
  251 
  252 
  253 4.00           2004-02-13
  254 -------------------------
  255 - Original version of LZMA SDK
  256 
  257 
  258 
  259 HISTORY of the LZMA
  260 -------------------
  261   2001-2008:  Improvements to LZMA compressing/decompressing code, 
  262               keeping compatibility with original LZMA format
  263   1996-2001:  Development of LZMA compression format
  264 
  265   Some milestones:
  266 
  267   2001-08-30: LZMA compression was added to 7-Zip
  268   1999-01-02: First version of 7-Zip was released
  269   
  270 
  271 End of document