Amalgamated Harmonics v0.5.8

• New Module: Imperfect, a trigger-to-gate and clock-divider module.
• Release of Arpeggiator Mk.II that now features CV controlled pattern and arpeggio selection, with a substantial overhaul under the hood which should allow easier extension in the future. The random modes have been dropped for the time being, but will return.
• Add transpose input to Scale Quantizer Mk.II. This shifts the pitch of all outputs by +-11 semitones
• Add serialisation code for Arpeggiator Mk.II and Progress (see #11)
• Fix the quantizer code (again)