Added setRange calls. Changed min max call to qMin qMax.
Added range extend method.
Change range extend to work on measures too.
Fix #23519 - key signatures now correctly supported in older versions of Guitar Pro
Improve labels in Staff Properties dlg box
Cleaning Inspector Note dlg box

- Note Head group drop list displays all the list items
- Fixed label buddies.
Merge pull request #950 from mgavioli/Fix_EditStaff_dlg_labels

Improve labels in Staff Properties dlg box
fix transposition when changing instrument
more fixes for instrument change
Merge pull request #951 from mgavioli/Cleaning_Inspector_Note_dlg

Cleaning Inspector Note dlg box
Removed unnecessary 0
Fixes to instruments.xml for stringed instruments.

- Banjo: corrected num.of frets and highest string tuning
- Tenor Banjo: added string data
- Soprano guitar, alto guitar, 11-str. alto guitar, 12-string guitar: added string data
- 7-course lute: added string data
- Acoustic bass: added comment about identity wth contrabass
- Violin, viola, cello, contrabass: added string data
- Double bass: init'ed from contrabass
- Violone (G): added string data and corrected ranges
- D Violone: added
Add built-in def. for 5-string electr. bass and 5-line tab presets
fix vtest gen
Merge pull request #952 from mgavioli/instruments-xml_stringed_instr_fixes

Fixes to instruments.xml for stringed instruments.
workaround for #25954
comment process()
fix #25946
fix #25945
fix mtest