New in version 1.1.
Change chromatic_pitch_number and accidental_semitones to octave number:
abjad> pitchtools.chromatic_pitch_number_and_accidental_semitones_to_octave_number(12, -2)
5
Return integer.
Changed in version 2.0: renamed pitchtools.pitch_number_and_accidental_semitones_to_octave() to pitchtools.chromatic_pitch_number_and_accidental_semitones_to_octave_number().