fix #25112 export slur on grace notes
fix #25112: import slur on grace notes
fix #25424: ottava playback solved
Added new constructor for parts, removed unnecessary calls to
setParentScore.
fix #25436
fix #25447: Downward arpeggio does not render correctly in nightly build with emmentaler
Fixed test scores by removing redundant metaTags in parts section.
update to SMuFL 0.9
some vtest fixes

wrong pitch of two notes in noteheadposition-1.mscz,
2 accidentals and 3 segnos too much in emmentaler-1.mscz,
wrong position of two articulations in emmentaler-3.png,
wrong trills in emmentaler-8,
wrong position of two articulations in bravura-5-ref.png
and SMuFL 0.9 noteheads for slash semibreve in bravura-10

Also adding Windows batch file to generate the -ref.png files
fix #25449: Select all stems for only one voice
Merge pull request #846 from Jojo-Schmitz/vtest-fixes

some vtest fixes
fix #25454: unisons should share noteheads despite duration difference
fix #25246: line properties for voltas
fix #25384: grace note spacing
Support for voltas in GP5 files
Updated volta test to remove additional staff types; Updated iteration declaration to use auto keyword
fix #25456: Spurious key signatures appear when layout changes
Merge pull request #853 from jpirie/22898-guitar-pro-volta

Progress on #22898: Support for voltas in GP5 files
Merge pull request #852 from MarcSabatella/25384-grace-note-spacing

fix #25384: grace note spacing
Merge pull request #851 from MarcSabatella/25246-volta-line-properties

fix #25246: line properties for voltas