Add CHANGELOG and bump version

Author: nickray

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [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.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "interchange"
-version = "0.2.1"
+version = "0.2.2"
 authors = ["Nicolas Stalder <n@stalder.io>"]
 edition = "2018"
 description = "Request/response mechanism for embedded development, using atomics"