NEWS - platform/external/zstd - Gitiles

 v1.1.4
 cli : new : can compress in *.gz format, using --format=gzip command, by Przemyslaw Skibinski
 cli : new : advanced benchmark command --priority=rt
 cli : fix : write on sparse-enabled file systems in 32-bits mode, by @ds77
 cli : fix : --rm remains silent when input is stdin
 cli : experimental : xzstd, with support for xz/lzma decoding, by Przemyslaw Skibinski
 speed : improved decompression speed in streaming mode for single shot scenarios (+5%)
 memory : DDict (decompression dictionary) memory usage down from 150 KB to 20 KB
 arch : 32-bits variant able to generate and decode very long matches (>32 MB), by Sean Purcell
 API : new : ZSTD_findFrameCompressedSize(), ZSTD_getFrameContentSize(), ZSTD_findDecompressedSize()
 API : changed : dropped support of legacy versions <= v0.3 (can be changed by modifying ZSTD_LEGACY_SUPPORT value)
 build: new: meson build system in contrib/meson, by Dima Krasner
 build: improved cmake script, by @Majlen
 build: added -Wformat-security flag, as recommended by Padraig Brady
 doc : new : educational decoder, by Sean Purcell

 v1.1.3
 cli : zstd can decompress .gz files (can be disabled with `make zstd-nogz` or `make HAVE_ZLIB=0`)
 cli : new : experimental target `make zstdmt`, with multi-threading support
 cli : new : improved dictionary builder "cover" (experimental), by Nick Terrell, based on prior work by Giuseppe Ottaviano.
 cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski
 cli : fix zstdless on Mac OS-X, by Andrew Janke
 cli : fix #232 "compress non-files"
 dictBuilder : improved dictionary generation quality, thanks to Nick Terrell
 API : new : lib/compress/ZSTDMT_compress.h multithreading API (experimental)
 API : new : ZSTD_create?Dict_byReference(), requested by Bartosz Taudul
 API : new : ZDICT_finalizeDictionary()
 API : fix : ZSTD_initCStream_usingCDict() properly writes dictID into frame header, by Gregory Szorc (#511)
 API : fix : all symbols properly exposed in libzstd, by Nick Terrell
 build : support for Solaris target, by Przemyslaw Skibinski
 doc : clarified specification, by Sean Purcell

 v1.1.2
 API : streaming : decompression : changed : automatic implicit reset when chain-decoding new frames without init
 API : experimental : added : dictID retrieval functions, and ZSTD_initCStream_srcSize()
 API : zbuff : changed : prototypes now generate deprecation warnings
 lib : improved : faster decompression speed at ultra compression settings and 32-bits mode
 lib : changed : only public ZSTD_ symbols are now exposed
 lib : changed : reduced usage  of stack memory
 lib : fixed : several corner case bugs, by Nick Terrell
 cli : new : gzstd, experimental version able to decode .gz files, by Przemyslaw Skibinski
 cli : new : preserve file attributes
 cli : new : added zstdless and zstdgrep tools
 cli : fixed : status displays total amount decoded, even for file consisting of multiple frames (like pzstd)
 cli : fixed : zstdcat
 zlib_wrapper : added support for gz* functions, by Przemyslaw Skibinski
 install : better compatibility with FreeBSD, by Dimitry Andric
 source tree : changed : zbuff source files moved to lib/deprecated

 v1.1.1
 New : command -M#, --memory=, --memlimit=, --memlimit-decompress= to limit allowed memory consumption
 New : doc/zstd_manual.html, by Przemyslaw Skibinski
 Improved : slightly better compression ratio at --ultra levels (>= 20)
 Improved : better memory usage when using streaming compression API, thanks to @Rogier-5 report
 Added : API : ZSTD_initCStream_usingCDict(), ZSTD_initDStream_usingDDict() (experimental section)
 Added : example/multiple_streaming_compression.c
 Changed : zstd_errors.h is now installed within /include (and replaces errors_public.h)
 Updated man page
 Fixed : zstd-small, zstd-compress and zstd-decompress compilation targets

 v1.1.0
 New : contrib/pzstd, parallel version of zstd, by Nick Terrell
 added : NetBSD install target (#338)
 Improved : speed for batches of small files
 Improved : speed of zlib wrapper, by Przemyslaw Skibinski
 Changed : libzstd on Windows supports legacy formats, by Christophe Chevalier
 Fixed : CLI -d output to stdout by default when input is stdin (#322)
 Fixed : CLI correctly detects console on Mac OS-X
 Fixed : CLI supports recursive mode `-r` on Mac OS-X
 Fixed : Legacy decoders use unified error codes, reported by benrg (#341), fixed by Przemyslaw Skibinski
 Fixed : compatibility with OpenBSD, reported by Juan Francisco Cantero Hurtado (#319)
 Fixed : compatibility with Hurd, by Przemyslaw Skibinski (#365)
 Fixed : zstd-pgo, reported by octoploid (#329)

 v1.0.0
 Change Licensing, all project is now BSD, Copyright Facebook
 Small decompression speed improvement
 API : Streaming API supports legacy format
 API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}(), ZSTD_setDStreamParamter()
 CLI supports legacy formats v0.4+
 Fixed : compression fails on certain huge files, reported by Jesse McGrew
 Enhanced documentation, by Przemyslaw Skibinski

 v0.8.1
 New streaming API
 Changed : --ultra now enables levels beyond 19
 Changed : -i# now selects benchmark time in second
 Fixed : ZSTD_compress* can now compress > 4 GB in a single pass, reported by Nick Terrell
 Fixed : speed regression on specific patterns (#272)
 Fixed : support for Z_SYNC_FLUSH, by Dmitry Krot (#291)
 Fixed : ICC compilation, by Przemyslaw Skibinski

 v0.8.0
 Improved : better speed on clang and gcc -O2, thanks to Eric Biggers
 New : Build on FreeBSD and DragonFly, thanks to JrMarino
 Changed : modified API : ZSTD_compressEnd()
 Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist
 Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers
 Fixed : large dictionaries (> 384 KB), reported by Ilona Papava
 Fixed : checksum correctly checked in single-pass mode
 Fixed : combined --test amd --rm, reported by Andreas M. Nilsson
 Modified : minor compression level adaptations
 Updated : compression format specification to v0.2.0
 changed : zstd.h moved to /lib directory

 v0.7.5
 Transition version, supporting decoding of v0.8.x

 v0.7.4
 Added : homebrew for Mac, by Daniel Cade
 Added : more examples
 Fixed : segfault when using small dictionaries, reported by Felix Handte
 Modified : default compression level for CLI is now 3
 Updated : specification, to v0.1.1

 v0.7.3
 New : compression format specification
 New : `--` separator, stating that all following arguments are file names. Suggested by Chip Turner.
 New : `ZSTD_getDecompressedSize()`
 New : OpenBSD target, by Juan Francisco Cantero Hurtado
 New : `examples` directory
 fixed : dictBuilder using HC levels, reported by Bartosz Taudul
 fixed : legacy support from ZSTD_decompress_usingDDict(), reported by Felix Handte
 fixed : multi-blocks decoding with intermediate uncompressed blocks, reported by Greg Slazinski
 modified : removed "mem.h" and "error_public.h" dependencies from "zstd.h" (experimental section)
 modified : legacy functions no longer need magic number

 v0.7.2
 fixed : ZSTD_decompressBlock() using multiple consecutive blocks. Reported by Greg Slazinski.
 fixed : potential segfault on very large files (many gigabytes). Reported by Chip Turner.
 fixed : CLI displays system error message when destination file cannot be created (#231). Reported by Chip Turner.

 v0.7.1
 fixed : ZBUFF_compressEnd() called multiple times with too small `dst` buffer, reported by Christophe Chevalier
 fixed : dictBuilder fails if first sample is too small, reported by Руслан Ковалёв
 fixed : corruption issue, reported by cj
 modified : checksum enabled by default in command line mode

 v0.7.0
 New : Support for directory compression, using `-r`, thanks to Przemyslaw Skibinski
 New : Command `--rm`, to remove source file after successful de/compression
 New : Visual build scripts, by Christophe Chevalier
 New : Support for Sparse File-systems (do not use space for zero-filled sectors)
 New : Frame checksum support
 New : Support pass-through mode (when using `-df`)
 API : more efficient Dictionary API : `ZSTD_compress_usingCDict()`, `ZSTD_decompress_usingDDict()`
 API : create dictionary files from custom content, by Giuseppe Ottaviano
 API : support for custom malloc/free functions
 New : controllable Dictionary ID
 New : Support for skippable frames

 v0.6.1
 New : zlib wrapper API, thanks to Przemyslaw Skibinski
 New : Ability to compile compressor / decompressor separately
 Changed : new lib directory structure
 Fixed : Legacy codec v0.5 compatible with dictionary decompression
 Fixed : Decoder corruption error (#173)
 Fixed : null-string roundtrip (#176)
 New : benchmark mode can select directory as input
 Experimental : midipix support, VMS support

 v0.6.0
 Stronger high compression modes, thanks to Przemyslaw Skibinski
 API : ZSTD_getFrameParams() provides size of decompressed content
 New : highest compression modes require `--ultra` command to fully unleash their capacity
 Fixed : zstd cli return error code > 0 and removes dst file artifact when decompression fails, thanks to Chip Turner

 v0.5.1
 New : Optimal parsing => Very high compression modes, thanks to Przemyslaw Skibinski
 Changed : Dictionary builder integrated into libzstd and zstd cli
 Changed (!) : zstd cli now uses "multiple input files" as default mode. See `zstd -h`.
 Fix : high compression modes for big-endian platforms
 New : zstd cli : `-t` | `--test` command

 v0.5.0
 New : dictionary builder utility
 Changed : streaming & dictionary API
 Improved : better compression of small data

 v0.4.7
 Improved : small compression speed improvement in HC mode
 Changed : `zstd_decompress.c` has ZSTD_LEGACY_SUPPORT to 0 by default
 fix : bt search bug

 v0.4.6
 fix : fast compression mode on Windows
 New : cmake configuration file, thanks to Artyom Dymchenko
 Improved : high compression mode on repetitive data
 New : block-level API
 New : ZSTD_duplicateCCtx()

 v0.4.5
 new : -m/--multiple : compress/decompress multiple files

 v0.4.4
 Fixed : high compression modes for Windows 32 bits
 new : external dictionary API extended to buffered mode and accessible through command line
 new : windows DLL project, thanks to Christophe Chevalier

 v0.4.3 :
 new : external dictionary API
 new : zstd-frugal

 v0.4.2 :
 Generic minor improvements for small blocks
 Fixed : big-endian compatibility, by Peter Harris (#85)

 v0.4.1
 Fixed : ZSTD_LEGACY_SUPPORT=0 build mode (reported by Luben)
 removed `zstd.c`

 v0.4.0
 Command line utility compatible with high compression levels
 Removed zstdhc => merged into zstd
 Added : ZBUFF API (see zstd_buffered.h)
 Rolling buffer support

 v0.3.6
 small blocks params

 v0.3.5
 minor generic compression improvements

 v0.3.4
 Faster fast cLevels

 v0.3.3
 Small compression ratio improvement

 v0.3.2
 Fixed Visual Studio

 v0.3.1 :
 Small compression ratio improvement

 v0.3
 HC mode : compression levels 2-26

 v0.2.2
 Fix : Visual Studio 2013 & 2015 release compilation, by Christophe Chevalier

 v0.2.1
 Fix : Read errors, advanced fuzzer tests, by Hanno Böck

 v0.2.0
 **Breaking format change**
 Faster decompression speed
 Can still decode v0.1 format

 v0.1.3
 fix uninitialization warning, reported by Evan Nemerson

 v0.1.2
 frame concatenation support

 v0.1.1
 fix compression bug
 detects write-flush errors

 v0.1.0
 first release
	v1.1.4
	cli : new : can compress in *.gz format, using --format=gzip command, by Przemyslaw Skibinski
	cli : new : advanced benchmark command --priority=rt
	cli : fix : write on sparse-enabled file systems in 32-bits mode, by @ds77
	cli : fix : --rm remains silent when input is stdin
	cli : experimental : xzstd, with support for xz/lzma decoding, by Przemyslaw Skibinski
	speed : improved decompression speed in streaming mode for single shot scenarios (+5%)
	memory : DDict (decompression dictionary) memory usage down from 150 KB to 20 KB
	arch : 32-bits variant able to generate and decode very long matches (>32 MB), by Sean Purcell
	API : new : ZSTD_findFrameCompressedSize(), ZSTD_getFrameContentSize(), ZSTD_findDecompressedSize()
	API : changed : dropped support of legacy versions <= v0.3 (can be changed by modifying ZSTD_LEGACY_SUPPORT value)
	build: new: meson build system in contrib/meson, by Dima Krasner
	build: improved cmake script, by @Majlen
	build: added -Wformat-security flag, as recommended by Padraig Brady
	doc : new : educational decoder, by Sean Purcell

	v1.1.3
	cli : zstd can decompress .gz files (can be disabled with `make zstd-nogz` or `make HAVE_ZLIB=0`)
	cli : new : experimental target `make zstdmt`, with multi-threading support
	cli : new : improved dictionary builder "cover" (experimental), by Nick Terrell, based on prior work by Giuseppe Ottaviano.
	cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski
	cli : fix zstdless on Mac OS-X, by Andrew Janke
	cli : fix #232 "compress non-files"
	dictBuilder : improved dictionary generation quality, thanks to Nick Terrell
	API : new : lib/compress/ZSTDMT_compress.h multithreading API (experimental)
	API : new : ZSTD_create?Dict_byReference(), requested by Bartosz Taudul
	API : new : ZDICT_finalizeDictionary()
	API : fix : ZSTD_initCStream_usingCDict() properly writes dictID into frame header, by Gregory Szorc (#511)
	API : fix : all symbols properly exposed in libzstd, by Nick Terrell
	build : support for Solaris target, by Przemyslaw Skibinski
	doc : clarified specification, by Sean Purcell

	v1.1.2
	API : streaming : decompression : changed : automatic implicit reset when chain-decoding new frames without init
	API : experimental : added : dictID retrieval functions, and ZSTD_initCStream_srcSize()
	API : zbuff : changed : prototypes now generate deprecation warnings
	lib : improved : faster decompression speed at ultra compression settings and 32-bits mode
	lib : changed : only public ZSTD_ symbols are now exposed
	lib : changed : reduced usage of stack memory
	lib : fixed : several corner case bugs, by Nick Terrell
	cli : new : gzstd, experimental version able to decode .gz files, by Przemyslaw Skibinski
	cli : new : preserve file attributes
	cli : new : added zstdless and zstdgrep tools
	cli : fixed : status displays total amount decoded, even for file consisting of multiple frames (like pzstd)
	cli : fixed : zstdcat
	zlib_wrapper : added support for gz* functions, by Przemyslaw Skibinski
	install : better compatibility with FreeBSD, by Dimitry Andric
	source tree : changed : zbuff source files moved to lib/deprecated

	v1.1.1
	New : command -M#, --memory=, --memlimit=, --memlimit-decompress= to limit allowed memory consumption
	New : doc/zstd_manual.html, by Przemyslaw Skibinski
	Improved : slightly better compression ratio at --ultra levels (>= 20)
	Improved : better memory usage when using streaming compression API, thanks to @Rogier-5 report
	Added : API : ZSTD_initCStream_usingCDict(), ZSTD_initDStream_usingDDict() (experimental section)
	Added : example/multiple_streaming_compression.c
	Changed : zstd_errors.h is now installed within /include (and replaces errors_public.h)
	Updated man page
	Fixed : zstd-small, zstd-compress and zstd-decompress compilation targets

	v1.1.0
	New : contrib/pzstd, parallel version of zstd, by Nick Terrell
	added : NetBSD install target (#338)
	Improved : speed for batches of small files
	Improved : speed of zlib wrapper, by Przemyslaw Skibinski
	Changed : libzstd on Windows supports legacy formats, by Christophe Chevalier
	Fixed : CLI -d output to stdout by default when input is stdin (#322)
	Fixed : CLI correctly detects console on Mac OS-X
	Fixed : CLI supports recursive mode `-r` on Mac OS-X
	Fixed : Legacy decoders use unified error codes, reported by benrg (#341), fixed by Przemyslaw Skibinski
	Fixed : compatibility with OpenBSD, reported by Juan Francisco Cantero Hurtado (#319)
	Fixed : compatibility with Hurd, by Przemyslaw Skibinski (#365)
	Fixed : zstd-pgo, reported by octoploid (#329)

	v1.0.0
	Change Licensing, all project is now BSD, Copyright Facebook
	Small decompression speed improvement
	API : Streaming API supports legacy format
	API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}(), ZSTD_setDStreamParamter()
	CLI supports legacy formats v0.4+
	Fixed : compression fails on certain huge files, reported by Jesse McGrew
	Enhanced documentation, by Przemyslaw Skibinski

	v0.8.1
	New streaming API
	Changed : --ultra now enables levels beyond 19
	Changed : -i# now selects benchmark time in second
	Fixed : ZSTD_compress* can now compress > 4 GB in a single pass, reported by Nick Terrell
	Fixed : speed regression on specific patterns (#272)
	Fixed : support for Z_SYNC_FLUSH, by Dmitry Krot (#291)
	Fixed : ICC compilation, by Przemyslaw Skibinski

	v0.8.0
	Improved : better speed on clang and gcc -O2, thanks to Eric Biggers
	New : Build on FreeBSD and DragonFly, thanks to JrMarino
	Changed : modified API : ZSTD_compressEnd()
	Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist
	Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers
	Fixed : large dictionaries (> 384 KB), reported by Ilona Papava
	Fixed : checksum correctly checked in single-pass mode
	Fixed : combined --test amd --rm, reported by Andreas M. Nilsson
	Modified : minor compression level adaptations
	Updated : compression format specification to v0.2.0
	changed : zstd.h moved to /lib directory

	v0.7.5
	Transition version, supporting decoding of v0.8.x

	v0.7.4
	Added : homebrew for Mac, by Daniel Cade
	Added : more examples
	Fixed : segfault when using small dictionaries, reported by Felix Handte
	Modified : default compression level for CLI is now 3
	Updated : specification, to v0.1.1

	v0.7.3
	New : compression format specification
	New : `--` separator, stating that all following arguments are file names. Suggested by Chip Turner.
	New : `ZSTD_getDecompressedSize()`
	New : OpenBSD target, by Juan Francisco Cantero Hurtado
	New : `examples` directory
	fixed : dictBuilder using HC levels, reported by Bartosz Taudul
	fixed : legacy support from ZSTD_decompress_usingDDict(), reported by Felix Handte
	fixed : multi-blocks decoding with intermediate uncompressed blocks, reported by Greg Slazinski
	modified : removed "mem.h" and "error_public.h" dependencies from "zstd.h" (experimental section)
	modified : legacy functions no longer need magic number

	v0.7.2
	fixed : ZSTD_decompressBlock() using multiple consecutive blocks. Reported by Greg Slazinski.
	fixed : potential segfault on very large files (many gigabytes). Reported by Chip Turner.
	fixed : CLI displays system error message when destination file cannot be created (#231). Reported by Chip Turner.

	v0.7.1
	fixed : ZBUFF_compressEnd() called multiple times with too small `dst` buffer, reported by Christophe Chevalier
	fixed : dictBuilder fails if first sample is too small, reported by Руслан Ковалёв
	fixed : corruption issue, reported by cj
	modified : checksum enabled by default in command line mode

	v0.7.0
	New : Support for directory compression, using `-r`, thanks to Przemyslaw Skibinski
	New : Command `--rm`, to remove source file after successful de/compression
	New : Visual build scripts, by Christophe Chevalier
	New : Support for Sparse File-systems (do not use space for zero-filled sectors)
	New : Frame checksum support
	New : Support pass-through mode (when using `-df`)
	API : more efficient Dictionary API : `ZSTD_compress_usingCDict()`, `ZSTD_decompress_usingDDict()`
	API : create dictionary files from custom content, by Giuseppe Ottaviano
	API : support for custom malloc/free functions
	New : controllable Dictionary ID
	New : Support for skippable frames

	v0.6.1
	New : zlib wrapper API, thanks to Przemyslaw Skibinski
	New : Ability to compile compressor / decompressor separately
	Changed : new lib directory structure
	Fixed : Legacy codec v0.5 compatible with dictionary decompression
	Fixed : Decoder corruption error (#173)
	Fixed : null-string roundtrip (#176)
	New : benchmark mode can select directory as input
	Experimental : midipix support, VMS support

	v0.6.0
	Stronger high compression modes, thanks to Przemyslaw Skibinski
	API : ZSTD_getFrameParams() provides size of decompressed content
	New : highest compression modes require `--ultra` command to fully unleash their capacity
	Fixed : zstd cli return error code > 0 and removes dst file artifact when decompression fails, thanks to Chip Turner

	v0.5.1
	New : Optimal parsing => Very high compression modes, thanks to Przemyslaw Skibinski
	Changed : Dictionary builder integrated into libzstd and zstd cli
	Changed (!) : zstd cli now uses "multiple input files" as default mode. See `zstd -h`.
	Fix : high compression modes for big-endian platforms
	New : zstd cli : `-t` \| `--test` command

	v0.5.0
	New : dictionary builder utility
	Changed : streaming & dictionary API
	Improved : better compression of small data

	v0.4.7
	Improved : small compression speed improvement in HC mode
	Changed : `zstd_decompress.c` has ZSTD_LEGACY_SUPPORT to 0 by default
	fix : bt search bug

	v0.4.6
	fix : fast compression mode on Windows
	New : cmake configuration file, thanks to Artyom Dymchenko
	Improved : high compression mode on repetitive data
	New : block-level API
	New : ZSTD_duplicateCCtx()

	v0.4.5
	new : -m/--multiple : compress/decompress multiple files

	v0.4.4
	Fixed : high compression modes for Windows 32 bits
	new : external dictionary API extended to buffered mode and accessible through command line
	new : windows DLL project, thanks to Christophe Chevalier

	v0.4.3 :
	new : external dictionary API
	new : zstd-frugal

	v0.4.2 :
	Generic minor improvements for small blocks
	Fixed : big-endian compatibility, by Peter Harris (#85)

	v0.4.1
	Fixed : ZSTD_LEGACY_SUPPORT=0 build mode (reported by Luben)
	removed `zstd.c`

	v0.4.0
	Command line utility compatible with high compression levels
	Removed zstdhc => merged into zstd
	Added : ZBUFF API (see zstd_buffered.h)
	Rolling buffer support

	v0.3.6
	small blocks params

	v0.3.5
	minor generic compression improvements

	v0.3.4
	Faster fast cLevels

	v0.3.3
	Small compression ratio improvement

	v0.3.2
	Fixed Visual Studio

	v0.3.1 :
	Small compression ratio improvement

	v0.3
	HC mode : compression levels 2-26

	v0.2.2
	Fix : Visual Studio 2013 & 2015 release compilation, by Christophe Chevalier

	v0.2.1
	Fix : Read errors, advanced fuzzer tests, by Hanno Böck

	v0.2.0
	Breaking format change
	Faster decompression speed
	Can still decode v0.1 format

	v0.1.3
	fix uninitialization warning, reported by Evan Nemerson

	v0.1.2
	frame concatenation support

	v0.1.1
	fix compression bug
	detects write-flush errors

	v0.1.0
	first release