message: Update CHANGELOG for alpha.22
diff: @@ -13,6 +13,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  this comment.
  -->
  +## [2.0.0-alpha.22] - 2017-01-13
  +
  ### Fixed
  * Do not complain about ES6 module syntax, but store enough information that we can warn about referencing modules as scripts.
  