equihash 0.2.0

The Equihash Proof-of-Work function
Documentation 
# Changelog
All notable changes to this library will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this library adheres to Rust's notion of
[Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

## [0.2.0] - 2022-06-24
### Changed
- MSRV is now 1.56.1.
- Bumped dependencies to `blake2b_simd 1`.

## [0.1.0] - 2020-07-10
Initial release.