message: update changelog for v0.51.1
diff: @@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  +## [0.51.1](https://github.com/rokucommunity/brighterscript/compare/v0.51.0...v0.51.1) - 2022-05-26
  +### Fixed
  + - allow enums and interfaces as function return types ([#601](https://github.com/rokucommunity/brighterscript/pull/601))
  + - support AstEditor in visitor editing pattern ([#599](https://github.com/rokucommunity/brighterscript/pull/599))
  +
  +
  +
  ## [0.51.0](https://github.com/rokucommunity/brighterscript/compare/v0.50.2...v0.51.0) - 2022-05-24
  ### Added
  - Add function-based` AstEditor.edit` method ([#598](https://github.com/rokucommunity/brighterscript/pull/598))
  