2015-07-12  Antonio Diaz Diaz  <antonio@gnu.org>

	* Version 1.17 released.
	* Reorganization of the compression code.
	* lzip.texi: Added chapter 'Quality assurance'.
	* Makefile.in: Added new targets 'install*-compress'.

2014-08-26  Antonio Diaz Diaz  <antonio@gnu.org>

	* Version 1.16 released.
	* Compression ratio of option '-9' has been slightly increased.
	* Compression time has been reduced by 4%.
	* Compression time of option '-0' has been reduced by 2%.
	* main.cc (close_and_set_permissions): Behave like 'cp -p'.
	* Minor improvements.
	* lzip.texinfo: Renamed to lzip.texi.
	* License changed to GPL version 2 or later.

2013-09-20  Antonio Diaz Diaz  <antonio@gnu.org>

	* Version 1.15 released.
	* Show progress of compression at verbosity level 2 (-vv).
	* main.cc (show_header): Do not show header version.
	* Ignore option '-n, --threads' for compatibility with plzip.
	* configure: Options now accept a separate argument.
	* lzip.texinfo: Added chapter 'Stream format' and appendix
	  'Reference source code'.

2013-02-17  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.14 released.
	* Multi-step trials have been implemented.
	* Compression ratio has been slightly increased.
	* Compression time has been reduced by 5%.
	* Decompression time has been reduced by 12%.
	* Makefile.in: Added new target 'install-bin'.
	* main.cc: Use 'setmode' instead of '_setmode' on Windows and OS/2.
	* main.cc: Define 'strtoull' to 'std::strtoul' on Windows.

2012-02-24  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.13 released.
	* Lziprecover has been moved to its own package.
	* main.cc (close_and_set_permissions): Inability to change output
	  file attributes has been downgraded from error to warning.
	* Compression time of option '-0' has been reduced by 2%.
	* Reorganization of the compression code.
	* Small change in '--help' output and man page.
	* Changed quote characters in messages as advised by GNU Standards.
	* configure: 'datadir' renamed to 'datarootdir'.
	* 'testsuite/unzcrash.cc' has been moved to package 'lziprecover'.

2011-04-30  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.12 released.
	* main.cc: Added new option '-F, --recompress'.
	* encoder.h (update_prices): Update high length symbol prices
	  independently of the value of 'pos_state'. This gives better
	  compression for large values of '--match-length' without being
	  slower.
	* encoder.h encoder.cc: Optimize pair price calculations. This
	  reduces compression time for large values of '--match-length'
	  by up to 6%.
	* Compression time of option '-0' has been reduced by 2%.
	* main.cc (decompress): Print only one status line for each
	  multi-member file when only one '-v' is specified.
	* main.cc (decompress): Print up to 6 bytes of trailing garbage
	  when '-vvvv' is specified.
	* main.cc (open_instream): Do not show the message
	  " and '--stdout' was not specified" for directories, etc.
	* lziprecover.cc: If '-v' is not specified show errors only.
	* testsuite/unzcrash.cc: Use Arg_parser.
	* testsuite/unzcrash.cc: Added new option '-b, --bits'.
	* testsuite/unzcrash.cc: Added new option '-p, --position'.
	* testsuite/unzcrash.cc: Added new option '-s, --size'.

2010-09-16  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.11 released.
	* Added new option '-0' which produces a compression speed and
	  ratio comparable to those of 'gzip -9'.
	* fast_encoder.h fast_encoder.cc: New files.
	* main.cc: Match length limit set by options -1 to -8 has been
	  reduced to extend range of use towards gzip. Lower numbers now
	  compress less but faster. (-1 now takes 43% less time for only
	  20% larger compressed size).
	* Compression ratio of option '-9' has been slightly increased.
	* lziprecover.cc: Added new option '-m, --merge' which tries to
	  produce a correct file merging the good parts of two or more
	  damaged copies.
	* lziprecover.cc: Added new option '-R, --repair' for repairing
	  a 1-byte error in single-member files.
	* decoder.cc (decode_member): Detect file errors earlier to
	  improve efficiency of lziprecover's new repair capability.
	  This change also prevents (harmless) access to uninitialized
	  memory when decompressing a corrupt file.
	* lziprecover.cc: Added new option '-f, --force'.
	* lziprecover.cc: Added new option '-o, --output'.
	* lziprecover.cc: Added new option '-s, --split' to select the
	  until now only operation of splitting multi-member files.
	* lziprecover.cc: If no operation is specified, warn the user
	  and do nothing.
	* main.cc: Fixed warning about fchown's return value being ignored.
	* decoder.cc: '-tvvvv' now also shows compression ratio.
	* main.cc: Set stdin/stdout in binary mode on MSVC and OS2.
	* lzip.texinfo: Added new examples.
	* testsuite: 'test1' renamed to 'test.txt'. Added new tests.
	* Matchfinder types HC4 (4 bytes hash-chain) and HT4 (4 bytes
	  hash-table) have been tested and found no better than the
	  current BT4.

2010-04-05  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.10 released.
	* decoder.h: Input_buffer integrated in Range_decoder.
	* main.cc: File specified with option '-o' is now created with
	  mode 0666 if umask allows it, deleted if interrupted by user.
	* main.cc: New constant 'o_binary'.
	* main.cc: Dictionary size for options -2, -3, -4 and -8 has
	  been changed to improve linearity of compressed sizes.
	* lzip.h: Fixed warnings produced by over-optimization (-O3).
	* Makefile.in: Added quotes to directory names.

2010-01-17  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.9 released.
	* main.cc (main): Return at least 1 if closing stdout fails.
	* Makefile.in: Added '--name' option to help2man invocation.
	* testsuite/check.sh: Use 'test1' instead of 'COPYING' for testing.

2009-09-02  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.8 released.
	* Compression time has been reduced by 4%.
	* Lzdiff and lzgrep have been moved to the new package zutils.
	* Fixed warnings on systems where uint32_t != unsigned int.

2009-06-25  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.7 released.
	* decoder.h (copy_block): Fixed memcpy overlap introduced in 1.6.

2009-06-22  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.6 released.
	* Decompression time has been reduced by 17%.
	* Added decompression support for Sync Flush marker.
	* Added support for .tbz extension to lzdiff and lzgrep.
	* Added man pages for lzdiff, lzgrep and lziprecover.
	* encoder.cc (Matchfinder): Reduce memory use to 9x if input file
	  is smaller than dictionary size limit.
	* decoder.cc: Added extra flush calls to improve partial
	  decompression of corrupt files.
	* '--test' no more needs '/dev/null'.
	* Removed some 'bashisms' from lzdiff and lzgrep.
	* Dictionary size for options '-1' to '-4' has been changed.
	* main.cc (signal_handler): Declared as 'extern "C"'.
	* Makefile.in: Extra files are now installed by default.
	* testsuite/check.sh: Test lziprecover.
	* Added 'export LC_ALL=C' to all scripts.

2009-04-12  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.5 released.
	* lzip.h: Coded dictionary size implemented in File_header.
	* Fixed some includes that prevented compilation with GCC 4.4.
	* 'member_size' and 'volume_size' are now accurate limits.
	* Compression speed has been improved.
	* Implemented bt4 type matchfinder.
	* lzip.texinfo: Added chapter 'Algorithm'.
	* Lzdiff and lzgrep now accept '-h' for '--help' and
	  '-V' for '--version'.
	* Makefile.in: Man page is now installed by default.
	* testsuite/check.sh: Verify that files are open in binary mode.

2009-01-24  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.4 released.
	* Implemented compression of version 1 files.
	* Added new option '-b, --member-size'.
	* Added new option '-S, --volume-size'.
	* Added new option '-o, --output'.
	* main.cc: Read from non regular files if '--stdout' is specified.
	* Added 'lziprecover', a member recoverer program.
	* testsuite/unzcrash.cc: Test all 1-byte errors.

2008-12-21  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.3 released.
	* This version automatically chooses the smallest possible
	  dictionary size for each file during compression, saving
	  memory during decompression.
	* Implemented decompression of version 1 files.
	* testsuite/check.sh: Replaced 'diff -q' with 'cmp'.

2008-12-10  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.2 released.
	* encoder.cc: A 1-byte read outside allocated memory has been fixed.
	* lzip.h: Dictionary size limit has been reduced to 512MiB because
	  setting it to 1GiB causes overflow of a 32 bit integer.
	* Added 'lzdiff', a diff/cmp wrapper for gzip, bzip2, lzip and
	  non-compressed files.
	* Added 'lzgrep', a grep wrapper for gzip, bzip2, lzip and
	  non-compressed files.
	* 'make install-info' should now work on Debian and OS X.

2008-11-17  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.1 released.
	* Changed short name of option '--dictionary-size' to '-s'.
	* Changed short name of option '--match-length' to '-m'.
	* Changed LONG_LONG_MAX to LLONG_MAX.

2008-10-14  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 1.0 released.
	* '-tvv' shows file version and dictionary size.

2008-09-30  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 0.5 released.
	* Decompression is now 1% faster.

2008-09-23  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 0.4 released.
	* Code cleanup for global variable 'verbosity'.
	* Regained the compression ratio of 0.2 with 5% faster speed.
	* Fixed compilation on systems where size_t != unsigned int.

2008-09-15  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 0.3 released.
	* encoder.cc: Compression is now 15% faster, 1% worse.
	* main.cc (main): Make '-t' option override '-c'.
	* main.cc (decompress): Show 'done' instead of 'ok' when not testing.
	* encoder.h: Use trials[] to return the list of pairs.

2008-09-09  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 0.2 released.
	* encoder.cc: Small improvements in compression speed.
	* Small documentation changes.

2008-08-20  Antonio Diaz Diaz  <ant_diaz@teleline.es>

	* Version 0.1 released.


Copyright (C) 2008-2015 Antonio Diaz Diaz.

This file is a collection of facts, and thus it is not copyrightable,
but just in case, you have unlimited permission to copy, distribute and
modify it.
