do not call updateNoteLines() when adding or removing generated clef
revert some changes
renamed class Instrument to ZInstrument in Zerberus
Merge pull request #284 from heuchi/clef_performance

better performance of clef handling
fix system barline layout if first staff is hidden
move Dynamic and TempoText properties to inspector
update tempomap after changing of tempo
show system elements when first staff is hidden
fix ottava number alignment in clef, see #20598
fix regression: export audio
update hairpin properties in inspector
misc. playback fixes for zerberus
add missing file inspector_line.ui
fix build
fix mtest; start implementing master effect section
Adds more actions and shortcuts:

*) new shortcuts for increase/decrease note pad value
*) HARMONY/FIGBASS: shortcuts for 'measured' advances
*) HARMONY/FIGBASS: shortcuts for jump to prev/next measure
*) HARMONY: shortcuts for jump to prev/next beat

*) Allow to combine shortcuts for TAB frets > 9 (for instance, use "fret-1" "fret-0" shortcuts to generate a fret '10')
Add spaces to render in stdchords.xml

Render text with embedded b or # needs spaces to ensure they are
displayed correctly. Added spaces between all components in the
render texts for consistency.
Merge pull request #286 from softins/stdchords-fix

Add spaces to render in stdchords.xml
fix #20115, fix resizing of brackets
factorize hide empty staff code