fix #8924: native support for slash notation
fix #36186 : crash when pasting with left-over portion spanning over an invalid duration
fix #39456: double click drum icon enters wrong segment/voice
fix #39476: corruption on entry of drum note onto segment with no element in voice 1
fix #39466: initially selected drum not active
fix #37621
add score preview to save as dialog
default to show startcenter at startup
startcenter: rename button to 'Find Scores' and point to musescore.com/sheetmusic
dont show shartcenter if started with scorename on commandline
fix #39006
fix #38856
add support for file update on musescore.com
support 404 not found for get scores
update test files
Merge pull request #1463 from MarcSabatella/drum-entry-bugs

Drum entry bugs
Merge pull request #1460 from MarcSabatella/slash-notation

fix #8924: native support for slash notation
fix #39621: accessible info for drum and slash notation
fix #39461
	modified:   mscore/drumtools.cpp
native 'break every X measures' function