PAPU, SID & RP2A03 Updated

PAPU, SID & RP2A03 Updated

PAPU, SID & RP2A03 have all been update to support parameter updates while the key is down. As well, PAPU gets pitch bend support and a few bugs have been fixed in RP2A03 — most importantly, now when you play too low a note you get silence instead of random frequencies.

Also, I added a donate button if you want to share some love.