REAPER v6.54rc3

v6.54rc3 - April 14 2022

* Includes feature branch: update ARA to version 2.1
* Includes feature branch: insert new track when importing media via mouse drag-drop
* Includes feature branch: render loudness graphing
* Includes feature branch: FX chain oversampling
+ ARA: update API to version 2.1, with full ARM support
+ Metadata: support WAVEEXT channel layout tag “L R C LFE Ls Rs” instead of “L R C LFE Lsd Rsd” [p=2547580]
# ARA: load plugins that only support ARA API version 2.0 draft (vs 2.0 final)
# FX oversampling: include 2x etc in floating window title