### Changed
- Internal implementation by removing unnecessary buffering ([#849])
- Serialization format used by `SerializableState` implementations
([#849])
- Replaced implementation of `CustomizedInit` with `TryCustomizedInit`
([#857])

[#849]: https://github.com/RustCrypto/hashes/pull/849
[#857]: https://github.com/RustCrypto/hashes/pull/857