REAPER v6.27+dev0417

v6.27+dev0417 - April 17 2021

* Includes feature branch: EEL2 x86_64/SSE
* Includes feature branch: VST3 bridging
* Includes feature branch: ReaSurroundPan
* Includes feature branch: media item lanes
+ Accessibility: improve behavior of spacebar in actions list and managers with spacebar-navigation option set
+ FX: fix mapping track channels above 32 using the FX pin connector dialog [t=252332]
+ Marker/region manager: fix undesired periodic marker deselection
+ Marker/region manager: improve selection behavior when removing markers/regions
+ Marker/region manager: move edit cursor when seeking during playback
+ Media explorer: fix tempo sync when inserting media on new track [p=2433091]
+ Track manager: fix keyboard navigation quirks on macOS with mirrored selection enabled
# Item group containers: remove feature for now