fix #19988: Shifted note in 1.X not displayed correctly
fix toggle of synthcontrol
fixes for midi rendering, staff text & aeolus
fix syntax error in run_tests.sh
fix regressions
add Ctrl+A and selection deletion support for simple text
add copy/cut/paste support in simpletext
update synthesizer on sequencer seek
fix layout of unstyled text
Initial mtest support fro Capella
Merge pull request #313 from lvinken/20581-capx-impl-2

Initial mtest support fro Capella