REAPER v6.72+dev1221

v6.72+dev1221 - December 21 2022

* Includes feature branch: selected media item appearance changes
* Includes feature branch: media item fixed lanes
+ Click source: do not hang on invalid tempo [t=271451]
+ Grouping: improve grouped edge editing behaviors [t=273993]
+ Grouping: respect FIPM/fixed lane position when applying track edit grouping to edge edits [p=2625897]
+ Routing: improve display of parent send channel dropdowns somewhat
+ Split: when splitting and not auto-crossfading, use a limit of arrange_width/4 for auto-applied fades
# Render: fix render statistics not updating during render