New features:
- Support for .h header files.
- Target to 10.15 (now the standard swift library is not embedded).
- New interactive preview setting to allow the execution of js code inside the quicklook preview.
Bugfix:
- Removed markdown support in the quicklook extension.
- Fix little space for theme name on popover theme selector.
- Images of help files have been compressed.
- Added a margin aroud the preview on the quicklook window.
- Fast generation of theme icons.