Ability to switch to enharmonic key signature for transposing parts
Currently, when concert pitch is B major, the behavior is as follows:
- Bb instruments display key signature as Ab major, but any notes and chords end up being written in G# major.
- Eb instruments display key signature and notes in C# major.
I think it makes sense to allow for enharmonic spelling of notes / key signatures via some kind of toggle, because many people find Ab major and Db major easier to read.
When concert pitch is E major, Bb instruments are in C# major and Eb instruments are in F# major. Would be nicer to use Db major and Gb major.