Also added secondary footprint for alternate TVS Diode
(ESD protection component) that's about 1/10th the cost
of the one currently used (suggested by the UART Bridge's
Datasheet.
- Renamed boards to more closely match change in spec/design revision
- Added required components to usb serial board stack
- Fixes https://github.com/pyr0ball/pyr0piezo/issues/9
- Minor change to voltage values to stay consistent with local tests