add concert/transposing clef tags
low brass / band & jazz
Some refactoring
MusicXML export of formatting for rehearsal marks
More MusicXML formatting support for lyrics, rehearsal marks and words
update mtest
add xpm icon for older linux distrib
fix #38571: Clef displayed incorrectly after change at beginning of system starting with mmrest
fix #38636: Crash when accessing, or engaged in Continuous View after deleting all measures
Merge pull request #1442 from lvinken/musicxml-font-handling

Musicxml font handling
Fix division of MIDI files in format "fps and ticks per frame"
Add test for MIDI division import
patches for linux packaging
add qml based startcenter framework
Merge branch 'startcenter'
update startcenter
More correct MIDI division for 29 frames per second
fix #38636: take 2
fix #38056: change tooltip color
fix #38706: Crash in Page View after deleting all measures and adding a staff