Shotcut 21.02.27

What's new in this version:

New:
- Added a file naming dialog for Export > From > Each Playlist Item > Export File
- Added the ability to repair a near future version project file
- (Version 21.04 is expected to change the project file in a manner incompatible with previous versions)
- Added an error dialog when trying to open a far future version project file

Changed:
- Upgraded JACK audio library on Windows to version 1.9.17

Fixed:
- a possible crash using a PNG with alpha channel (transparency) especially with a Size, Position & Rotate filter (broke in version 20.06)
- seeking video in some files particularly AVCHD (broke in v21.01)
- changing Properties > Video > Color Range does not work (broke in v21.01)
- selecting text with the mouse in various filter numeric fields (broke in v21.01)
- difficult to enter some numbers in various filter numeric fields (broke in v21.01)
- unable to make tracks as short as before (broke in v21.01)
- time bar in Timeline & Keyframes hidden on vertical scroll and not clickable (broke in v21.01)
- scroll bars in Timeline & Keyframes may clash with clips or keyframes making them difficult to use (regression in v21.01)

- keyframes disappear when changing selected clips on various filters (broke in v21.01):
Gain/Volume
Pan
Pitch
Saturation

- appending to the timeline may change the current track
- Properties > Extract sub-clip on a file with cover art
- File > Export Frame on a clip with a Text: Rich filter
- toggle Properties > Image sequence may deadlock on high frame rate video mode or break playback
- Timeline > Merge with next clip may move other clips on the track
- undo a trim in point on Timeline may shift other clips on the track
- undo after trim in point to create a 1 frame transition may delete the clip
- right-click in Playlist icons view mode on breaks multiple selection on Windows
- Properties > Convert after Timeline > Detach Audio makes video black
- some keyboard shortcuts may be broken when not using English (United States) language
- possible crash on Windows due to not loading the packaged DLL over one in a system folder or in %PATH%
- a crash when selecting a missing video clip
- unicode in Text: Rich > Save As followed by Open