impl-codec 0.6.0

Parity Codec serialization support for uint and fixed hash.
Documentation
# Changelog

The format is based on [Keep a Changelog].

[Keep a Changelog]: http://keepachangelog.com/en/1.0.0/

## [Unreleased]

## [0.6.0] - 2022-02-04
### Breaking
- Migrated to 2021 edition, enforcing MSRV of `1.56.1`. [#601]https://github.com/paritytech/parity-common/pull/601
- Updated `parity-scale-codec` to 3.0. [#622]https://github.com/paritytech/parity-common/pull/622

## [0.5.1] - 2021-07-02
### Dependencies
- Updated `parity-scale-codec` to 2.2. [#552]https://github.com/paritytech/parity-common/pull/552

## [0.5.0] - 2021-01-27
### Breaking
- Updated `parity-scale-codec` to 2.0. [#510]https://github.com/paritytech/parity-common/pull/510