Release 0.2.2 (#21)

Author: rth

CHANGELOG.md

@@ -4,7 +4,7 @@ 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).
 
-## [0.2.2] - unreleased
+## [0.2.2] - 2022-12-22
 ### Changed
  - `pyodide --help` will now group subcommands by their package name.
    ([#19](https://github.com/pyodide/pyodide-cli/pull/19))