Added
- Load last used OSD font file on startup (@dz0ny).
- Option to render video with a chroma key background instead of the input video so the OSD can be overlayed in a video editor.
- Support for Betaflight 4.5 four color fonts.
- Support for INAV side-by-side format font files (#43, @mmosca).
- Support for 4K and 2.7K DVR (#43, @mmosca).
Fixed
- Bug that caused font files with unexpected number of characters to not open.