Cluster constructor
Cluster({})
Implementation
Cluster({
required this.lowestPitch,
required this.highestPitch,
Pitch? lowestNote,
Pitch? highestNote,
this.type = ClusterType.chromatic,
this.notation,
this.showBracket = true,
}) : lowestNote = lowestNote ?? lowestPitch,
highestNote = highestNote ?? highestPitch;