message: Fix 1.2.0 release date.
diff: @@ -6,7 +6,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
  <!-- ## [Unreleased] -->
  -## [1.2.0] - 2018-02-14
  +## [1.2.0] - 2018-02-15
  - Functions which definitely never return a value will now be automatically inferred as returning `void`.
  - Getters on Polymer elements defined with the legacy Polymer function are now scanned correctly (previously type annotations were missing, and the readonly bit was inverted.
  