rev 1.2.1 add additional pin

rev 1.2

Some revision to meet pcb service requirements - Change via hole diameter - Via and component placement - etc

Routing (3) Signal routing mostly done with something that needs TODO next: - Correction for power signals - Tidy up component silkscreen - Add team name and tagline

Routing (2) - make the pcb edge cuts to suit mechanic requirements - route some components (power, usb debug, gps) progress 50%

Routing Layout - add footprint to all components - pcb shape and dimension - component placement

first commit