Release 2.0.0 beta 3

Changes from 2.0.0-beta.2 to 2.0.0-beta.3

• Quick release to fix that beta.2 was tagged on top of a branch, not master.

• The msgpack trailer now properly starts with 0x90 + 4 value, not plain
  wrong 0x09 + 4.

• Trailer version bumped to 1.

Release 2.0.0 beta 2

Changes from 2.0.0-beta.1 to 2.0.0-beta.2

• A new usermeta chunk in schunk allows to store arbitrary meta-information
  that is up to the user. If the schunk has an attached frame, the later
  will be updated accordingly too. For more info, see PR #74 and docstrings of
  new blosc2_update_usermeta() and blosc2_get_usermeta() functions.

• Metalayers must now be attached to super-chunks, not frames. The reason is
  that frames are increasingly treated as a storage specifier (in-memory or
  disk now, but can be other means in the future), whereas the actual API for
  I/O (including metainfo) goes into super-chunks. See PR #75.

• New frame format documented in
  README_FRAME_FORMAT.rst. Remember that the frame
  format is not written in stone yet, so some changes may be introduced before
  getting out of beta.

• BREAKING CHANGE: the format for frames has changed and
  BLOSC2_VERSION_FRAME_FORMAT is now set to 1. There is no attempt to support
  previous formats, but there will probably be backward compatibility support
  starting from version 1 on.

• BREAKING CHANGE: the next APIs have been renamed:

  • blosc2_frame_has_metalayer -> blosc2_has_metalayer
  • blosc2_frame_add_metalayer -> blosc2_add_metalayer
  • blosc2_frame_update_metalayer -> blosc2_update_metalayer
  • blosc2_frame_metalayer -> blosc2_get_metalayer

  Although the API was declared stable in beta.1, the fact that metalayers are
  attached now to super-chunks directly, made this change completely necessary.

• BREAKING CHANGE: the next symbols have been renamed:

  • BLOSC_CPARAMS_DEFAULTS -> BLOSC2_CPARAMS_DEFAULTS
  • BLOSC_DPARAMS_DEFAULTS -> BLOSC2_DPARAMS_DEFAULTS

First beta release for C-Blosc2

Changes from 2.0.0a5 to 2.0.0-beta.1

• The library is called now blosc2 and not blosc anymore. This is necessary
  so as to prevent collisions with existing blosc deployments.

• The make install now install all the necessary requirements out-of-the-box.

• Use Intel IPP's LZ4Safe when compressing/decompressing: this provides better
  compression ratios and speed (in some cases). It is activated automatically
  if Intel IPP is found in the system, but you can always disable it with:
  cmake -DDEACTIVATE_IPP=ON

• BREAKING CHANGE: the next API have been made private:

  • blosc2_frame_append_chunk -> frame_append_chunk
  • blosc2_frame_get_chunk -> frame_get_chunk
  • blosc2_frame_decompress_chunk -> frame_decompress_chunk

  Now the appending and retrieval of data in frames should always be made via the frame-backed super-chunk API. The idea is to deduplicate the I/O primitives as much as possible, and the super-chunks are the logical way for doing this.

• BREAKING CHANGE: the next APIs have been renamed:

  • blosc2_get_cparams - > blosc2_schunk_get_cparams
  • blosc2_get_dparams - > blosc2_schunk_get_dparams

• Internal BloscLZ sources bumped to 2.0.0.

• Internal LZ4 sources bumped to 1.9.1.

• Internal Zstd sources bumped to 1.4.0.