Mutwo.ext-abjad

Changed
- `abjad_converters.RMakersSequentialEventToQuantizedAbjadContainer` to `abjad_converters.LeafMakerSequentialEventToQuantizedAbjadContainer`
- `abjad_converters.RMakersSequentialEventToDurationLineBasedQuantizedAbjadContainer` to `abjad_converters.LeafMakerSequentialEventToDurationLineBasedQuantizedAbjadContainer`

Fixed
- quantization of very long leafs by `abjad_converters.LeafMakerSequentialEventToQuantizedAbjadContainer`

Removed
- `abjad-ext-rmakers` dependency

Added
- monkey patches for `abjad` in `mutwo_third_party/abjad`

Changed
- `Hairpin` attachment
- changed bad converter names (XToYConverter -> XToY)

Added
- Cue and WoodwindFinger attachment classes

Changed
- updated to new `mutwo.ext-music` and `mutwo.ext-ekmelily` versions

Added
- conversion of lyrics

Changed
- internal structure

Changed
- package structure to namespace package to apply refactor of mutwo main package
- default arguments (lambda functions) in `SequentialEventToAbjadVoiceConverter` to common `music_converters` functions
- moved `attachments` from `converters` to `abjad_parameters`
- `...Converter` to `...`, for instance:
- `SequentialEventToAbjadVoiceConverter` to `SequentialEventToAbjadVoice`
- `MutwoPitchToAbjadPitchConverter` to `MutwoPitchToAbjadPitch`
- `MutwoVolumeToAbjadAttachmentDynamicConverter` to `MutwoVolumeToAbjadAttachmentDynamic`
- `TempoEnvelopeToAbjadAttachmentTempoConverter` to `TempoEnvelopeToAbjadAttachmentTempo`
- ...