fix #21838 fix #21910
Add loop playback feature
initial hooks
implementation of next/prev track

move up and down by track, stopping only at tracks that have content at
or before the cursor position within the current measure
change alt-up/down to move by chord and track

First move through current chord on current track, then move up and down
by track.
move empty inspector hint into tooltip
Framework for bagpipe palette
Initial implementation bagpipe palette
Initial implementation bagpipe palette
fix #22121
Inspector for generic element: make ranges for X and Y offsets wider.

For instance, while placing a text element within a full page frame, the current ranges are too strict, as for instance Y offset is limited to 10 sp max.
Merge pull request #431 from mgavioli/Inspector_element_wider_xy_offset_ranges

Inspector for generic element: make ranges for X and Y offsets wider.
fix for slurs and voices in MusicXML import
fix #18345: Disable copy paste between different versions of MuseScore
Image inspector has some issues:

*) When autoscale is turned on, size and scale values are not updated neither are disabled
*) Lock aspect ratio does not work
*) mm/sp size check box does not update size values not size units of measure

Fixed by:

1) Sync-ing the enum at the beginning of 	inspectorimage.cpp with iList items
2) Adding a few extra calls to InspectorBase::valueChanged() for commands which change two values at the same time
Merge pull request #433 from mgavioli/Fix_inspector_for_images

Fix inspector for images
Merge pull request #430 from lvinken/13108-bagpipe-palette

13108 bagpipe palette
Merge pull request #427 from vgstef/loopPlayback

Add loop playback feature
fix loop icon
Merge pull request #432 from MarcSabatella/kbd-mode

vertical keyboard navigation