message: update changelog for v0.5.3
diff: @@ -6,6 +6,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  +## [0.5.3]
  +### Added
  + - syntax support for the xml attribute operator (`node@someAttr`) (#34)
  + - syntax support for bitshift operators (`<<` and `>>`) (#50)
  + - several extra validation checks for class statements
  +### Fixed
  + - syntax bug that was showing parse errors for known global method names (such as `string()`) (#49)
  +
  +
  +
  ## [0.5.2] - 2020-04-11
  ### Changed
  - downgrade diagnostic issue 1007 from an error to a warning, and updated the message to "Component is mising "extends" attribute and will automatically extend "Group" by default" (#53)
  @@ -123,6 +133,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  +[0.5.3]: https://github.com/rokucommunity/brighterscript/compare/v0.5.2...v0.5.3
  [0.5.2]: https://github.com/rokucommunity/brighterscript/compare/v0.5.1...v0.5.2
  [0.5.1]: https://github.com/rokucommunity/brighterscript/compare/v0.5.0...v0.5.1
  [0.5.0]: https://github.com/rokucommunity/brighterscript/compare/v0.4.4...v0.5.0
  