add one octave higher
if FileOpen events occur directly on start, dont setCurrentDocument() them all, just do that later. Hopefully issue #244 is satisfyingly fixed now?
always install the FileOpen event handler

even if the app is sessionRestored (although I dont know whether Mac
OS X uses a session manager)
let ElementTree write the XML itself.
(oops)
fix error message
double sharps and double flats supported
Merge branch 'master' of https://github.com/wbsoft/frescobaldi
fix #248
upd chlog
docstring
some more gui text guidelines
Merge branch 'master' of https://github.com/wbsoft/frescobaldi
remove unneeded imports; just ask for a tokens iterable
preview-command: Small fix in includepath
preview-modes: Add 'disable point-and-click'
preview-modes: oops. Revert second-to-last commit

I don't know why this is necessary ...
move musicxml export to ly.musicxml
Merge pull request #257 from uliska/no-point-and-click

Preview-modes: Add 'Disable point-and-click'
Merge branch 'master' of github.com:wbsoft/frescobaldi