Optimized TimespanManager.
Updated ComplexTextSpanner doctest.
Optimized TimespanManager.
Added PitchClassPitchMaker.register_spread property.
Added transform stack to PitchClassPitchMaker.
Optimized MusicSetting and TimespanManager.
Integrated meter rewriting permissions into RhythmManager.
Improving silent timespan handling.
Cleaned up SilentTimespan.
Added sanity check to TimespanManager.
Cleaned up SilentTimespan.
Cleaned up TimespanMaker.
Added sanity checks to TimespanManager.
Integrated padding into synchronized step timespan making.
Corrected import.
Improved padding logic in TaleaTimespanMaker.
Implemented MusicSpecifier labels.
Improved music specifier labeling.
Added pitch-range checking to chord and cluster expressions.
Cleaned up pitch-range checking.