Wntrblm Sol Versions Save

Fixes an issue with SPIDevice on the latest versions of CircuitPython (7.x) and Adafruit_Bus_Device.

• firmware: fix should_trigger_clock() to only trigger when a clock message is received, fixing #7
• factory: fix publish command
• factory: add option to recalibrate during factory setup
• factory: fixup factory setup script to work with latest wintertools
• factory: use wintertools
• user_guide: increase contrast, mark external links
• user guide: add link to Liz Clark's video on Raspberry Pi MIDI host
• user guide: add OSHW certification info
• user guide: add open source information and links to the hardware and firmware sources
• user guide: move docs to shared theme
• user guide: mention JACK MIDI and a2jmidid
• hardware: update PDF of schematic

• Fix an issue with micropython.native causing a strange SEMITONE is not defined error.

• Reduced loop overhead by changing the MIDI CC array copy strategy - faster updates!
• Added parametric CV and gate value setters - thanks Nora! (#4)
• Described MIDI message object in more depth in the documentation - thanks again, Nora. (#3)
• Fixed the decay phase for re-started envelopes.
• Added a brand-new ADSR class that fixes several bits of weirdness with the last one.
• Added an alias for state.aftertouch: state.pressure.

Initial release of Sol firmware + libraries.