- bad voice combine '3' when 3 voices and unison
  - don't separate the accents from the notes by tuplets
  - clash of tuplet numbers with accents
  - bad time signature when C or C| and more value(s)
  - warnings from clang static analysis
  - bad music font selection when not defined by 'url(..)'
  - bad vertical offset of "%%multicol new" when W: and %%begintext
  - bad handling of fonts
- changes
  - Add option flatbeamgracing that applies flat beams to grace notes only
  - put the upper tuplets a bit closer to the notes