=> 3154-0.12.0

- Backport support for dotted settings (#1321) (Rafał Chłodnicki)
- Add support for "LanguageHandler.additional_variables" plugin API (#1324) (Rafał Chłodnicki)
- Add support for expanding "$cache_path", "$temp_dir" and "$home" variables in "command", "settings"
  and "initializationOptions" (#1324) (Rafał Chłodnicki)
