message: add date to changelog for v0.11.2
diff: @@ -6,7 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  -## [0.11.2]
  +## [0.11.2] - 2020-07-09
  ### Changed
  - add 350ms debounce in LanguageServer `onDidChangeWatchedFiles` to increase performance by reducing the number of times a file is parsed and validated.
  ### Fixed
  