fixed a bug in LilyPondExport that prevented pitches without glissando from being exported correctly


Signed-off-by: Maximilian Marcoll <quince@maximilianmarcoll.de>
CopyValues & Rectify


Signed-off-by: Maximilian Marcoll <quince@maximilianmarcoll.de>
Performance Optimizations


Signed-off-by: Maximilian Marcoll <quince@maximilianmarcoll.de>