interchange 0.2.2

Request/response mechanism for embedded development, using atomics
Documentation
# Changelog
All notable changes to this project will be documented in this file.

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

## [Unreleased]

## [0.2.2]- 2021-04-23
- Soundness fix @sosthene-nitrokey

## [0.2.0]- 2021-04-23

- Changes API to use references instead of moves.
  This improves stack usage.