v6.45+dev0109 - January 9 2022
* Includes feature branch: FX chain oversampling
* Includes feature branch: render internals simplification/cleanup
* Includes feature branch: user-defined action overhaul
* Includes feature branch: media explorer toolbar
* Includes feature branch: media item fixed lanes
+ Media items: show warning or error (if common gain) when some items could not be normalized
+ Metadata: add ogg, opus to displayed list of render formats that support VORBIS metadata
+ macOS: fix keyboard navigation in various listviews when arrow keys are used as keyboard shortcuts in menus (6.43 regression)
