moved right board edge and EXP connectors 10mm to the right.

Board outline updated
Ground and power planes and keepouts updated
Sliced tracks and moved connectors
Rev C changes

Reconnected expansion header nets
Marked USB programming parts that are not required as DNP.
Added UART connections to USB circuit
Updated annotation
Updated project parameters to reflect new Revision, Rev C
Add 1.2V LDO

Moved configuration pull ups and LEDs to make room for 1.2V LDO
Added 1.2V LDO
Initial update to express routing. Not quite happy with how close to
other circuits they are.
Routed UART connection.
Major cleanup on USB power filter and crystal routing.