message: update changelog for v0.22.0
diff: @@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  +## [0.22.0] - 2020-11-23
  +### Added
  + - `try/catch` and `throw` syntax support [#218](https://github.com/rokucommunity/brighterscript/issues/218)
  +
  +
  +
  ## [0.21.0] - 2020-11-19
  ### Added
  - Catch when local variables and scope functions have the same name as a class. ([#246](https://github.com/rokucommunity/brighterscript/pull/246))
  @@ -733,3 +739,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  [0.20.0]: https://github.com/rokucommunity/brighterscript/compare/v0.19.0...v0.20.0
  [0.20.1]: https://github.com/rokucommunity/brighterscript/compare/v0.20.0...v0.20.1
  [0.21.0]: https://github.com/rokucommunity/brighterscript/compare/v0.20.1...v0.21.0
  +[0.22.0]: https://github.com/rokucommunity/brighterscript/compare/v0.21.0...v0.22.0
  \ No newline at end of file
  