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Feb 25, 2020
version 0.2.2
Changes since 0.2.1 (and since c-0.2.0):
- Fix a performance issue when the caller makes multiple calls to
  update() with uneven lengths. (#69, reported by @willbryant.)
Feb 25, 2020
version 0.2.2
Changes since 0.2.1 (and since c-0.2.0):
- Fix a performance issue when the caller makes multiple calls to
  update() with uneven lengths. (#69, reported by @willbryant.)
Feb 14, 2020
version 0.2.1
Changes since 0.2.0:
- Workarounds in the assembly implementations (enabled by the "c"
  feature), to build with older compilers.
Feb 13, 2020
tag the first release of the C implementation, c-0.2.0
This release is motivated by a fix for a potential security
vulnerability. 421a21a fixes a bug
introduced in a1c4c4e. A truncated
pointer register led to a segfault on x86-64 under Clang 7 and 8.
Clang 9 happens to be unaffected, but the behavior is undefined in
general. See also:
#60 (comment)

The C implementation of BLAKE3 hasn't been formally packaged anywhere,
and most callers vendor code from master. This release tag is intended
to make the fix above more visible, to encourage callers to update their
vendored copies. We will continue to publish tags like this whenever
bugs in the C implementation are fixed, or if there are any incompatible
API changes.

Note that the issue above does not impact callers of the Rust `blake3`
crate. The affected file, `blake3_dispatch.c`, is not compiled by that
crate in any configuration. It does impact callers of the internal
`blake3_c_rust_bindings` crate, but that crate is not published on
crates.io and not intended for production use.
Feb 12, 2020
version 0.2.0
Changes since 0.1.5:
- The `c_avx512` feature has been replaced by the `c` feature. In
  addition to providing AVX-512 support, `c` also provides optimized
  assembly implementations. These assembly implementations perform
  better, perform more consistently across compilers, and compile more
  quickly. As before, `c` is off by default, but the `b3sum` binary
  crate activates it by default.
- The `rayon` feature no longer affects the entire API. Instead, it
  provides the `join::RayonJoin` type for use with
  `Hasher::update_with_join`, so that the caller can control when
  multi-threading happens. Standalone API functions like `hash` are
  always single-threaded now.
Feb 10, 2020
version 0.1.5
Changes since 0.1.4:
- Remove all AVX-512 code from builds with the default feature set. This
  works around rust-lang/rust#68905 and fixes
  the nightly build as long as the "c_avx512" feature is not activated.

This release is a backport of a single commit, e43a7d6. The master
branch contains backwards-incompatible changes (fc219f4), and the next
release of master will be version 0.2.0.

Note that the `b3sum` crate activates the "c_avx512" feature by default,
and it will continue to fail to build on nightly until the upstream bug
is fixed.
Feb 3, 2020
version 0.1.4
Changes since 0.1.3:
- Hasher supports the reset() method.
- Hasher implements several traits from the `digest` and `crypto_mac`
  crates.
- Bug fixes in the C implementation for MSVC and for 32-bit x86.
Jan 23, 2020
version 0.1.3
Changes since 0.1.2:
- All x86 implementations include _mm_prefetch optimizations. These
  improve performance for very large inputs.
- The C implementation performs parallel parent hashing, matching the
  performance of the single-threaded Rust implementation.
- b3sum supports --no-mmap. Contributed by @cesarb.
Jan 17, 2020
version 0.1.2
Changes since 0.1.1:
- b3sum no longer mmaps files smaller than 16 KiB. This improves
  performance for hashing many small files. Contributed by @xzfc.
- b3sum now supports --raw output. Contributed by @phayes.
Jan 13, 2020
version 0.1.1
Changes since 0.1.0:
- Optimizations contributed by @cesarb.
- Fix the build on x86_64-pc-windows-gnu when c_avx512 is enabled.
- Add an explicit error message for compilers that don't support c_avx512.
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