OpenEffectsBox v4 is underway

I’ve created objects for a footswitch, a bat switch, a potentiometer; I’ve created an object for the open effects box itself, with 4 pots, 2 bats, and 2 foot switches.

Plan is to implement handling of the relays, screen, and LEDs in the OpenEffectsBoxHW object.

Current code is pushed to my Git repository.