Monohull 0.2.0

• USB: the FM-1 is now a class-compliant USB-MIDI device ("FM-1 Monohull"), so a computer can play it. The web installer, the Firmware Hub and fm1_install.py can install another firmware over Monohull directly, as they do over Felucca; it answers them as FM-1_928.
• New preset, PWM PAD: a Juno-style pad, with two detuned pulse waves, a slow swell, the Juno I+II chorus and reverb.

Tested on a real FM-1. See the README for how to install it and how to get back to another firmware.

monohull.fwsc SHA-256: 6ed6e01d76066f1e7cefae7b528822de89d62b77ca2e7470d7ce81ee0570a83c