Using the Preset drop list in the Tab part of the Staff Type dlg box may lead to program crash.

Fixed.
1-line staves from 1.2 scores have no bar lines.
Merge pull request #149 from mgavioli/crash_on_Staff_Type_dlgbox_presets

Crash on Staff Type dlg box Presets drop list
Merge pull request #150 from mgavioli/Fix#19331

Fix #19331
fix #15006
Merge pull request #151 from lvinken/musicxml-fixes

fix #15006
fix #16519
fix #17499
fix #16518
fix #14691
Fix #19463

After changing a note/chord value, arrow keys become ineffective
Merge pull request #152 from lvinken/musicxml-fixes

Musicxml fixes
Merge pull request #154 from mgavioli/Fix_#19463

Fix #19463
fix #19441
Merge pull request #157 from Jojo-Schmitz/master

fix #19441
removed mxmlOff (prepare for fixing #19459)
#15899: support multi-staff parts with figured bass elements
#15899: support figured bass extend elements
#16057: prepare for MusicXML export of fret diagrams
Merge pull request #160 from lvinken/musicxml-fixes

Musicxml fixes