v6.43+dev1226 - December 26 2021
* Includes feature branch: render internals simplification/cleanup
* Includes feature branch: user-defined action overhaul
* Includes feature branch: media item normalization
* Includes feature branch: media explorer toolbar
* Includes feature branch: media item fixed lanes
* Includes feature branch: JSFX internals overhaul/cleanup/modernization
* Includes feature branch: Windows very long pathname support
+ ReaScript: add NormalizeItems function
+ ReaScript: do not apply render-config changes when calling GetSetProjectInfo in get mode on rendering configuration [t=261085]
+ ReaScript: properly support passing binary-safe strings to extension-registered functions [t=261079]
+ ReaSurroundPan: correct 9.1.4 speaker arrangement, add 9.1.6 [t=261134]
+ Render: fix files left open when normalization/limiting is interrupted [t=261118]
# macOS: add NSActivityUserInitiated for beginActivity bits
