#22399 import / export MusicXML creator to / from score information (metaTags)
cleanup MusicXML metadata handling
make all MusicXML metadata editable in the file info dialog
disable added MusicMXL metadata, as it breaks mtest
Merge pull request #459 from lvinken/node22312

fix #22312
increase distance of chords if both have ledger lines
fix #22485
fix #9009, more styles for tuplets
fix tests