REAPER (64-bit)

What's new in this version:

JSFX:
- fix memory bounds checking on aarch64/armv7l
- fix gfx_showmenu() related issues (deadlock when undo point added, possible crash when MCP embedded)
- if REAPER has an external editor configured for .jsfx, use for open in external editor button
- improve 32-bit x86 implementation (consistent rounding with other architectures)
- scripts can write to #dbg_desc to write debug messages visible on main plug-in UI
- show code sections in IDE right-click menu
- show context information about built-in variables in IDE
- do not allow export_buffer_to_project() to be called from @slider
- allow override of refresh rate using options:gfx_hz=60 etc
- add options:gfx_idle to allow @gfx section to run when UI is closed (detectable via gfx_ext_flags having 2 set)
- add options:gfx_idle_only to allow UI-less plug-ins to run @gfx code at idle

Media items:
- add option to close item notes window on enter key
- save item notes when closing item notes window via action
- add support for various loudness measurements (LUFS, etc) when normalizing media items
- when normalizing multiple items to an integrated loudness value, support either normalizing each item separately or normalizing the combined (sequential) output of all items

ReaScript:
- add CalculateNormalization function
- do not apply render-config changes when calling GetSetProjectInfo in get mode on rendering configuration
- do not defer indefinitely when calling reaper.defer() with no parameters from Lua
- properly support passing binary-safe strings to extension-registered functions

Render:
- ensure final master render peaks are displayed after normalizing
- fix files left open when normalization/limiting is interrupted
- fix render peaks display when normalizing and negative project start time offset exists
- fix saving of presets with normalize enabled affecting old presets

Actions:
- add "erase" as a default synonym for delete/clear/remove
- do not warn on program startup if too many custom actions exist (only warn when creating)

macOS:
- add per-theme option to not use themed window colors when in dark-mode (enabled by default theme)
- improve performance of Live FX multiprocessing, especially on M1 systems

Projects:
- improve behavior relating to project notes flags and loading projects in REAPER 6.38 and earlier
- on new project without saved project settings, set recording/render format to 24-bit wav

ReaSynth:
- fix extra sine oscillator when portamento is used
- fix stuck note when portamento is used in certain instances

Super8:
- fix recording glitches that could occur during looped project-synchronized playback
- support exporting media into project via MIDI CC when UI is not open

Windows:
- fix listview drawing glitches when editing values and scrolling
- support very long pathnames (note: for shell browsing/etc to work with these, the LongPathsEnabled registry key must be set)
- improve display responsiveness of progress bars

Control surfaces:
- fix CSURF_EXT_SETSENDVOLUME notifications when in write mode and fader-scaled envelopes
- Custom action editor
- fix entering certain characters on macOS

Glue:
- if format supports BWF, write start offset when exploding multichannel audio to new files

Keyboard:
- fix various cross-platform key aliasing corner cases

Linux:
- prevent closing windows via close button when a popup menu is open

Media explorer:
- improve selection behavior after navigating with arrow keys on Windows

Metadata:
- fix setting XMP marker metadata

MIDI editor:
- add action to insert note at edit cursor without advancing

Pan:
- fix manual entry of pan values when preference is set to display pan in dB

Razor edits:
- do not delete/cut/copy razor edits when cursor focus is on track control panels

ReaEQ:
- add Parallel Band Pass filter mode

ReaSurroundPan:
- correct 9.1.4 speaker arrangement, add 9.1.6

VST:
- scan %LOCALAPPDATA%ProgramsCommonVST3 on Windows