add one octave higher
double sharps and double flats supported
Merge branch 'master' of https://github.com/wbsoft/frescobaldi
Merge branch 'master' of https://github.com/wbsoft/frescobaldi
relative pitches supported
Merge branch 'master' of https://github.com/wbsoft/frescobaldi

Conflicts:
	frescobaldi_app/ly/musicxml/source2musxml.py
Merge branch 'master' of https://github.com/wbsoft/frescobaldi
Merge branch 'master' of https://github.com/wbsoft/frescobaldi
More merging required
One more fix needed
Merge pull request #261 from PeterBjuhr/master

Relative pitches supported