| ⇢ | A | Note added |
| ⇢ | B | Note::fromName() added | |
| ⇢ | A | Harmonic::getSeries() added | |
| ⇢ | A | Note::__construct() added | |
| ⇢ | A | Note::fromCents() added | |
| ⇢ | A | Note::normalizeAccidental() added | |
| ⇢ | A | Note::getCents() added | |
| ⇢ | A | Note::__toString() added | |
| A | ↛ | VibratingString::getHarmonicSeries() removed |