Unified diff tab added, see issue #436
Added save button #436
change font to monospace
Further development of file saving, including better filenames.
adding ly code highlighter in diff tab
diff highlighting
Merge pull request #453 from PeterBjuhr/convert-ly-diff

Convert ly diff
Merge pull request #457 from PeterBjuhr/musicxml

Rewritten musicxml export to integrate with ly.music, see also issue #376
fix #456

improve parsing of \\tempo
ly.music doc improvements
Merge pull request #458 from PeterBjuhr/musicxml

Musicxml Export
Accidentals expanded
Cautionary, with parentheses and microtonal.