MIDI editor: fix possible crash when destroying midi item via undo/redo
OGG Opus: improve end of stream behavior when writing .
VST: fix support for HALion 5 and other VST3 with more than 64 output channels ...
action to set note ends to start of next note will not shorten notes beyond the lesser of (grid size, 25% of original note length) .
add default toolbar buttons to switch view mode
add "show/hide track list" to track selection dropdown ...
avoid duplicate note-offs on stop in certain instances .
fix export/glue of 1-byte text messages .
fix incorrect tempomap rounding issue . ...
improve note editing when displaying paired staves and custom clefs
fix incorrect breaming in certain chord/time signature combinations .
fix missing ledger line when using custom accidentals . ...
Notation editor: NEW in 5.20 - Compose and edit MIDI as musical notation, or view and edit recorded MIDI. Flexible mouse editing, key signatures, multiple clefs, dynamics, voices, lyrics, tuplets, articulation, ornaments, slurs, and more.
FX:VST3 support, sample-accurate automation for VST3 and JSFX, FX browser improvements.
ReaScript:API and scripting improvements, including a built-in development environment for creating and debugging scripts in Lua, EEL, or Python. Create anything from simple macros, to complex new functionality.
Control grouping:Flexible, automatable VCA control. Link groups of track controls together at any point in the signal flow.
Video:Many improvements to video support and performance, including real-time programmable track and item effect processing.
FX parameter automation:Full automation and MIDI/OSC learn support for per-take FX, improved FX envelope and modulation management via the Project Bay, increased automation recording speed.
New GUI layouts, Media Explorer improvements, metronome beat patterns, Opus support, MIDI note-off editing, new volume envelope modes, new actions and API functions, and many other fixes and improvements