- Use valid SPDX tag GPL-3.0 WITH Font-exception-2.0

- Add changelog from https://github.com/orgs/musescore/projects/36/views/2
- MuseScore 4.2.1:
* [MusicXML import] fermatas on barlines #19770
* Crash after changing beam type to No beam in Properties #21099
* Crash when trying to open a midi score that musescore 4.1.1 was
able to open #21020
* MacBook MuseScore App Crashing #20936
* [MU4 Tech Debt] Unit tests in src/notation are never running #10667
* No longer able to drag a section of music to transpose it. #20606
* Minimum distance field does not update when value changes #13261
* [MU4 Issue] Playback not in sync with playhead when changing
instrument in mixer #15047
* Pauses not working properly and delaying playback #17329
* [MU4 Issue] Caesuras do not Update Playback #15773
* [MuseSounds Issue] Pauses not Working, Playback Clipped Sometimes,
Removing Pauses makes it Worse #15578
* Cmd+Delete measures and undo crashes MuseScore #20947
* [MU4 Issue] Pause (fermata/caesura) duration not honored until
save/reload #15305
* Crash after deleting measure with tempo mark and closing orchestral
score #20955
* Pedal text not rendering at all when I insert a marking with said
text #20646
* Glissandos don't play back on tied notes. #20570
* Opening and closing mixer while note input mode is enabled causes
strange visual bug in score view #20761
* Pedals do not work on mallet percussion instruments #20579
* Sounds continue across Section Break #20557