REAPER v6.47rc2

v6.47rc2 - February 8 2022

* Includes feature branch: render internals simplification/cleanup
* Includes feature branch: user-defined action overhaul
* Includes feature branch: media explorer toolbar
+ API: add midi_init()
# Batch converter: fix localization of list view column names
# ReaScript: fix GetMediaFileMetadata() for querying large single values
# ReaScript: optimize GetMediaFileMetadata()
# Theme: rename ex_* toolbar images to toolbar_ex_*
# Theme: update explorer toolbar images