Explicit enharmonic spellings

Chordify forces the user to choose between flats or sharps for all enharmonic spellings in a song. This is problematic for a substantial amount of jazz and video game music, which modulate frequently.

For example, I was fixing the chords in a song which has a Bb major chord and an E/G# chord. I have to choose which I want spelled correctly. A# major and E/Ab are really bad spellings for these chords.

Feature request: Allow the user to choose which enharmonic spelling to use for each chord.