REAPER 5.4.0

What's new in this version:

Peaks:
- add spectrogram display mode, per-item spectrogram option - video
- improve support for editing media items containing .wav files which are being recorded in a separate tab

Grid:
- support swing grid in arrange view, optionally synchronized with MIDI editor grid - video
- allow grid/snap window to stay open if enabled in advanced preferences
- move grid appearance options from grid/snap window to preferences/appearance

MIDI:
- allow absolute MIDI CC control of swing grid strength
- create new take on "open item copy in built-in MIDI editor" action
- set MIDI clock properly when exporting to .mid file
- support ".midi" as an importable file extension, in addition to the usual ".mid"
- fix "paint straight line of notes" mouse modifier when grid is set to greater than or equal to measure length

Theming:
- support item_*_hidpi.png on Windows/HiDPI themes
- use common dialog font for various elements in envelope, send windows
- allow themes to override global UI scaling using rtconfig.txt global_scale line
- better logic for knob large/small background selection

Anticipative FX:
- improve behavior when stopping
- reduce memory use when smooth seek enabled

macOS:
- fix reading slider zero-line colors from theme
- add retina support for track panels/etc using beta HiDPI/Retina theme
- improve handling of large theme fonts

Notation editor:
- automatically scroll view when entering lyrics
- ignore muted notes in PDF and MusicXML export

ReaScript:
- add Track/TakeFX_Get/SetNamedConfigParm
- include latent preset changes in Undo_EndBlock()

Media explorer:
- fix folder icon display error on macOS 10.10

Project load:
- add recovery mode checkbox to optional choose-project-on-open dialog

ReaSamplomatic:
- support TrackFX_SetNamedConfigParm and similar API functions with FILE, FILExx, -FILExx, +FILExx, -FILE*, DONE, RSMODE, MODE

ReaVerb:
- support TrackFX_SetNamedConfigParm and similar API functions with ITEMx, DONE

Undo:
- improve undo behavior for various editing actions

VST:
- fix resolving VST3 by UID on first scan