v0.5.1

• Add m7b9b5 quality.

v0.5.0

• Add Chord.components_with_pitch method.

v0.4.2

• Rename 6/9 to 69.
• Add m69, m7b5, and - qualities.
• Contributor: @dok

v0.4.1

• Add qualities.
  • sus, maj7, maj9, m6, madd9
  • 7b5, 7#5, 7b9, 7#9
  • 9-5, 9b5, 9+5, 9#5
  • 7#9b5, 7#9#5, 7b9b5, 7b9#5, 7#11, 7b9#9, 7b9#11, 7#9#11, 7b13
  • 7b9b13, 9+11, 9#11, 13-9, 13b9, 13+9, 13#9, 13+11, 13#11
• Support quality alias comparison.
  • maj7 == M7

v0.4.0

• Support chord creation using note index in a scale.
• Contributor: @kwadwo00

Make QUALITY_DICT values immutable

• Fix the bug #26 #27.

Fix __eq__ of Chord and support __eq__ for Quality

• Implement __eq__ method for Quality.
• Fix __eq__ method of Chord to support comparison between sharped and flatted chords.

Fix not equal for comparing Chords

• Implement __eq__, __ne__, __setitem__ methods for ChordProgression.
• Implement __eq__ method for Chord.

Handle base note in Chord.components

• Handle base note in Chord.components
• Contributor: mstuttgart

Enable setting scale on Chord.transpose

• Enable setting scale on Chord.transpose
• Contributor: jgvictores