C-Blosc 1.21.5 released!

Changes from 1.21.4 to 1.21.5

• Fix SSE2/AVX2 build issue. Fixes #352. Thanks to Thomas VINCENT
  and Mark Kittisopikul.

Release 1.21.4

Changes from 1.21.3 to 1.21.4

• Upgrade internal-complib zstd from 1.5.2 to 1.5.5.

• Zlib updated to 1.2.13.

Release 1.21.2

Changes from 1.21.1 to 1.21.2

• Add support for SHUFFLE_AVX2_ENABLED and SHUFFLE_SSE2_ENABLED
  even if AVX2 or SSE2 is not available. See PR #347. Thanks to
  Thomas VINCENT.

• Upgrade internal-complib zstd from 1.5.0 to 1.5.2. Thanks to
  Mark Kittisopikul.

• Many small code improvements, improved consistency and typo fixes.
  Thanks to Dimitri Papadopoulos Orfanos.

• New HIDE_SYMBOLS CMake option to control the symbols exposure.
  Default is ON. Thanks to Mariusz Zaborski.

C-Blosc 1.21.1 released

Changes from 1.21.0 to 1.21.1

• Fix pthread flag when linking on ppc64le. See #318. Thanks to Axel Huebl.

• Updates in codecs (some bring important performance improvements):

  • BloscLZ updated to 2.5.1
  • Zlib updated to 1.2.11
  • Zstd updated to 1.5.0

Release 1.21.0

Changes from 1.20.1 to 1.21.0

• Updated zstd codec to 1.4.8.

• Updated lz4 codec to 1.9.3.

• New instructions on how to use the libraries in python-blosc wheels
  so as to compile C-Blosc applications. See:
  https://github.com/Blosc/c-blosc/blob/master/COMPILING_WITH_WHEELS.rst

Release 1.20.1

Changes from 1.20.0 to 1.20.1

• Added <unistd.h> in vendored zlib 1.2.8 for compatibility with Python 3.8 in recent Mac OSX. For details, see: Blosc/python-blosc#229.

1.20.0 (beast) release

Changes from 1.19.1 to 1.20.0

• More saftey checks have been implemented so that potential flaws
  discovered by new fuzzers in OSS-Fuzzer are fixed now. Thanks to
  Nathan Moinvaziri (@nmoinvaz).

• BloscLZ updated to 2.3.0. Expect better compression ratios for faster
  codecs. For details, see our new blog post:
  https://blosc.org/posts/beast-release/

• Fixed the _xgetbv() collision. Thanks to Michał Górny (@mgorny).

• The chunk format has been fully described so that 3rd party software
  may come with a different implementation, but still compatible with
  C-Blosc chunks.

Release 1.19.0

Changes from 1.18.1 to 1.19.0

• The length of automatic blocksizes for fast codecs (lz4, blosclz) has
  been incremented quite a bit (up to 256 KB) for better compression ratios.
  The performance in modern CPUs (with at least 256 KB in L2 cache) should
  be better too (for older CPUs the performance should stay roughly the same).

• Continuous integration has been migrated to GitHub actions and much
  more scenarios are tested (specially linking with external codecs).
  Also, a new OSS-Fuzz workflow has been added for increased detection
  of possible vulnerabilities. Thanks to Nathan Moinvaziri.

• For small buffers that cannot be compressed (typically < 128 bytes),
  blosc_compress() returns now a 0 (cannot compress) instead of a negative
  number (internal error). See #294.
  Thanks to @kalvdans for providing the initial patch.

• blosclz codec updated to 2.1.0. Expect better compression ratios and
  performance in a wider variety of scenarios.

• blosc_decompress_unsafe(), blosc_decompress_ctx_unsafe() and
  blosc_getitem_unsafe() have been removed because they are dangerous
  and after latest improvements, they should not be used in production.

• zstd codec updated to 1.4.5.

• Conan packaging has been deprecated (from now on, we should try
  to focus on supporting wheels only).

Release 1.18.1

Changes from 1.17.1 to 1.18.1

• Fixed the copy of the leftovers of a chunk when its size is not a
  multiple of the typesize. Although this is a very unusual situation,
  it can certainly happen (e.g. Blosc/python-blosc#220).

Release 1.18.0

Changes from 1.17.1 to 1.18.0

• Fixed the copy of the leftovers of a chunk when its size is not a
  multiple of the typesize. Although this is a very unusual situation,
  it can certainly happen (e.g.
  Blosc/python-blosc#220).