Log message:
zstd: updated to 1.5.6

V1.5.6 (Mar 2024)
api: Promote `ZSTD_c_targetCBlockSize` to Stable API
api: new `ZSTD_d_maxBlockSize` experimental parameter, to reduce streaming \ 
decompression memory,
perf: improve performance of param `ZSTD_c_targetCBlockSize`,
perf: improved compression of arrays of integers at high compression,
lib: reduce binary size with selective built-time exclusion,
lib: improved huffman speed on small data and linux kernel,
lib: accept dictionaries with partial literal tables,
lib: fix CCtx size estimation with external sequence producer,
lib: fix corner case decoder behaviors,
lib: fix zdict prototype mismatch in static_only mode,
lib: fix several bugs in magicless-format decoding,
cli: add common compressed file types to `--exclude-compressed``
cli: fix mixing `-c` and `-o` commands with `--rm`,
cli: fix erroneous exclusion of hidden files with `--output-dir-mirror`
cli: improved time accuracy on BSD,
cli: better errors on argument parsing,
tests: better compatibility with older versions of `grep`,
tests: lorem ipsum generator as default backup content,
build: cmake improvements
build: bazel support,
build: fix cross-compiling for AArch64 with lld
build: fix Apple platform compatibility,
build: fix Visual 2012 and lower compatibility,
build: improve win32 support,
build: better C90 compliance for zlibWrapper,
port: make: fat binaries on macos,
port: ARM64EC compatibility for Windows,
port: QNX support
port: MSYS2 and Cygwin makefile installation and test support,
port: risc-v support validation in CI,
port: sparc64 support validation in CI,
port: AIX compatibility,
port: HP-UX compatibility,
doc: Improved specification accuracy,
bug: Fix and deprecate ZSTD_generateSequences

Log message:
zstd: do not build zlibwrapper

It is only an example and is not installed.

Log message:
Fix braino.

Log message:
zstd: Allow building on legacy platforms, including those without native
pthreads and Darwin/ppc.

Log message:
PR 57383 Mike Owens: zstd assembler bug on SPARC

Put amd64 assembler directives inside the amd64 ifdefs so they don't
get assembled on other targets.

Log message:
archivers/zstd: minor pkglint

Log message:
zstd: update to 1.5.5.

v1.5.5 (Apr 2023)
fix: fix rare corruption bug affecting the high compression mode, reported by \ 
@danlark1 (#3517, @terrelln)
perf: improve mid-level compression speed (#3529, #3533, #3543, @yoniko and \ 
#3552, @terrelln)
lib: deprecated bufferless block-level API (#3534) by @terrelln
cli: mmap large dictionaries to save memory, by @daniellerozenblit
cli: improve speed of --patch-from mode (~+50%) (#3545) by @daniellerozenblit
cli: improve i/o speed (~+10%) when processing lots of small files (#3479) by \ 
@felixhandte
cli: zstd no longer crashes when requested to write into write-protected \ 
directory (#3541) by @felixhandte
cli: fix decompression into block device using -o, reported by @georgmu (#3583)
build: fix zstd CLI compiled with lzma support but not zlib support (#3494) by \ 
@Hello71
build: fix cmake does no longer require 3.18 as minimum version (#3510) by @kou
build: fix MSVC+ClangCL linking issue (#3569) by @tru
build: fix zstd-dll, version of zstd CLI that links to the dynamic library \ 
(#3496) by @yoniko
build: fix MSVC warnings (#3495) by @embg
doc: updated zstd specification to clarify corner cases, by @Cyan4973
doc: document how to create fat binaries for macos (#3568) by @rickmark
misc: improve seekable format ingestion speed (~+100%) for very small chunk \ 
sizes (#3544) by @Cyan4973
misc: tests/fullbench can benchmark multiple files (#3516) by @dloidolt

Log message:
zstd: update to 1.5.4.

v1.5.4 (Feb 2023)
perf: +20% faster huffman decompression for targets that can't compile x64 \ 
assembly (#3449, @terrelln)
perf: up to +10% faster streaming compression at levels 1-2 (#3114, @embg)
perf: +4-13% for levels 5-12 by optimizing function generation (#3295, @terrelln)
pref: +3-11% compression speed for `arm` target (#3199, #3164, #3145, #3141, \ 
#3138, @JunHe77 and #3139, #3160, @danlark1)
perf: +5-30% faster dictionary compression at levels 1-4 (#3086, #3114, #3152, @embg)
perf: +10-20% cold dict compression speed by prefetching CDict tables (#3177, @embg)
perf: +1% faster compression by removing a branch in ZSTD_fast_noDict (#3129, \ 
@felixhandte)
perf: Small compression ratio improvements in high compression mode (#2983, \ 
#3391, @Cyan4973 and #3285, #3302, @daniellerozenblit)
perf: small speed improvement by better detecting `STATIC_BMI2` for `clang` \ 
(#3080, @TocarIP)
perf: Improved streaming performance when `ZSTD_c_stableInBuffer` is set (#2974, \ 
@Cyan4973)
cli: Asynchronous I/O for improved cli speed (#2975, #2985, #3021, #3022, @yoniko)
cli: Change `zstdless` behavior to align with `zless` (#2909, @binhdvo)
cli: Keep original file if `-c` or `--stdout` is given (#3052, @dirkmueller)
cli: Keep original files when result is concatenated into a single output with \ 
`-o` (#3450, @Cyan4973)
cli: Preserve Permissions and Ownership of regular files (#3432, @felixhandte)
cli: Print zlib/lz4/lzma library versions with `-vv` (#3030, @terrelln)
cli: Print checksum value for single frame files with `-lv`  (#3332, @Cyan4973)
cli: Print `dictID` when present with `-lv` (#3184, @htnhan)
cli: when `stderr` is *not* the console, disable status updates, but preserve \ 
final summary (#3458, @Cyan4973)
cli: support `--best` and `--no-name` in `gzip` compatibility mode (#3059, \ 
@dirkmueller)
cli: support for `posix` high resolution timer `clock_gettime()`, for improved \ 
benchmark accuracy (#3423, @Cyan4973)
cli: improved help/usage (`-h`,  `-H`) formatting (#3094, @dirkmueller and \ 
#3385, @jonpalmisc)
cli: Fix better handling of bogus numeric values (#3268, @ctkhanhly)
cli: Fix input consists of multiple files _and_ `stdin` (#3222, @yoniko)
cli: Fix tiny files passthrough (#3215, @cgbur)
cli: Fix for `-r` on empty directory (#3027, @brailovich)
cli: Fix empty string as argument for `--output-dir-*` (#3220, @embg)
cli: Fix decompression memory usage reported by `-vv --long` (#3042, @u1f35c, \ 
and #3232, @zengyijing)
cli: Fix infinite loop when empty input is passed to trainer (#3081, @terrelln)
cli: Fix `--adapt` doesn't work when `--no-progress` is also set (#3354, @terrelln)
api: Support for Block-Level Sequence Producer (#3333, @embg)
api: Support for in-place decompression (#3432, @terrelln)
api: New  `ZSTD_CCtx_setCParams()`  function, set all parameters defined in a  \ 
`ZSTD_compressionParameters`  structure (#3403, @Cyan4973)
api: Streaming decompression detects incorrect header ID sooner (#3175, @Cyan4973)
api: Window size resizing optimization for edge case (#3345, @daniellerozenblit)
api: More accurate error codes for busy-loop scenarios (#3413, #3455, @Cyan4973)
api: Fix limit overflow in `compressBound` and `decompressBound` (#3362, #3373, \ 
Cyan4973) reported by @nigeltao
api: Deprecate several advanced experimental functions: streaming (#3408, \ 
@embg), copy (#3196, @mileshu)
bug: Fix corruption that rarely occurs in 32-bit mode with wlog=25 (#3361, @terrelln)
bug: Fix for block-splitter (#3033, @Cyan4973)
bug: Fixes for Sequence Compression API (#3023, #3040, @Cyan4973)
bug: Fix leaking thread handles on Windows (#3147, @animalize)
bug: Fix timing issues with cmake/meson builds (#3166, #3167, #3170, @Cyan4973)
build: Allow user to select legacy level for cmake (#3050, @shadchin)
build: Enable legacy support by default in cmake (#3079, @niamster)
build: Meson build script improvements (#3039, #3120, #3122, #3327, #3357, \ 
@eli-schwartz and #3276, @neheb)
build: Add aarch64 to supported architectures for zstd_trace (#3054, @ooosssososos)
build: support AIX architecture (#3219, @qiongsiwu)
build: Fix `ZSTD_LIB_MINIFY` build macro, which now reduces static library size \ 
by half (#3366, @terrelln)
build: Fix Windows issues with Multithreading translation layer (#3364, #3380, \ 
@yoniko) and ARM64 target (#3320, @cwoffenden)
build: Fix `cmake` script (#3382, #3392, @terrelln and #3252 @Tachi107 and #3167 \ 
@Cyan4973)
doc: Updated man page, providing more details for `--train` mode (#3112, @Cyan4973)
doc: Add decompressor errata document (#3092, @terrelln)
misc: Enable Intel CET (#2992, #2994, @hjl-tools)
misc: Fix `contrib/` seekable format (#3058, @yhoogstrate and #3346, \ 
@daniellerozenblit)
misc: Improve speed of the one-file library generator (#3241, @wahern and #3005, \ 
@cwoffenden)

v1.5.3 (dev version, unpublished)

Log message:
zstd: update to 1.5.2.

v1.5.2 (Jan, 2022)
perf: Regain Minimal memset()-ing During Reuse of Compression Contexts \ 
(@Cyan4973, #2969)
build: Build Zstd with `noexecstack` on All Architectures (@felixhandte, #2964)
doc: Clarify Licensing (@terrelln, #2981)

Log message:
zstd: updated to 1.5.1

v1.5.1 (Dec, 2021)
perf: rebalanced compression levels, to better match the intended speed/level \ 
curve, by @senhuang42
perf: faster huffman decoder, using x64 assembly, by @terrelln
perf: slightly faster high speed modes (strategies fast & dfast), by @felixhandte
perf: improved binary size and faster compilation times, by @terrelln
perf: new row64 mode, used notably in level 12, by @senhuang42
perf: faster mid-level compression speed in presence of highly repetitive \ 
patterns, by @senhuang42
perf: minor compression ratio improvements for small data at high levels, by \ 
@cyan4973
perf: reduced stack usage (mostly useful for Linux Kernel), by @terrelln
perf: faster compression speed on incompressible data, by @bindhvo
perf: on-demand reduced ZSTD_DCtx state size, using build macro \ 
ZSTD_DECODER_INTERNAL_BUFFER, at a small cost of performance, by @bindhvo
build: allows hiding static symbols in the dynamic library, using build macro, \ 
by @skitt
build: support for m68k (Motorola 68000's), by @cyan4973
build: improved AIX support, by @Helflym
build: improved meson unofficial build, by @eli-schwartz
cli : custom memory limit when training dictionary
cli : report advanced parameters information when compressing in very verbose \ 
mode (``-vv`)