message: Prepare to release v2.2.2
diff: @@ -11,7 +11,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  Unreleased section, uncommenting the header as necessary.
  -->
  -## Unreleased
  +<!-- ## Unreleased -->
  +
  +## [2.2.2] - 2017-07-20
  * Fixed a bug where we were too aggressive in associating HTML comments with
  nodes, such that any comment that came before a `<script>` tag e.g. could
  