message: update changelog for v0.16.8
diff: @@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  +## [0.16.8] - 2020-10-15
  +### Fixed
  + - bug when printing diagnostics that would crash if the contents were missing (like for in-memory-only files injected by plugins) ([#217](https://github.com/rokucommunity/brighterscript/pull/217))
  + - Drop expensive AST walking for collecting property names and instead collect them as part of parsing
  +
  +
  +
  ## [0.16.7] - 2020-10-13
  ### Fixed
  - bug when finding `bsconfig.json` that would use the wrong cwd in multi-workspace language server situations.
  @@ -620,3 +627,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  [0.16.5]: https://github.com/rokucommunity/brighterscript/compare/v0.16.4...v0.16.5
  [0.16.6]: https://github.com/rokucommunity/brighterscript/compare/v0.16.5...v0.16.6
  [0.16.7]: https://github.com/rokucommunity/brighterscript/compare/v0.16.6...v0.16.7
  +[0.16.8]: https://github.com/rokucommunity/brighterscript/compare/v0.16.7...v0.16.8
  \ No newline at end of file
  