message: Prepare to release v1.3.3
diff: @@ -10,6 +10,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  Please document PR changes here. Uncomment the Unreleased header as
  appropriate.
  -->
  +## 1.3.3 - 2017-03-20
  +
  +- Update the linter to get a ton of new rules.
  +- Configure the legacy interface (used by Atom) to read polymer.json, which will cause Atom to start seeing warnings from the linter.
  +- A ton of bug fixes, especially around Polymer 2.0 elements.
  ## Unreleased
  