The RPI can now control the backlight by overwriting the Backlight enable
switch.

The Testpoints allow measurement of VLED and VDD_DISPLAY

- checked and fixed most ERC errors
- checked and fixed applicable DRC errors
- added 3d models for raspberry pi (4B / Zero)
- added L1 to check raspberry pi clearance
- added more clearance between rgb lcd lines in an effort to improve cross talk
- added solder jumpers for scan line directions
- make all vias 0.6mm/0.3mm instead of 0.8mm/0.3mm
- make all vias buried vias (for looks and silk printability)

removed 5V from USB

Done DRC. Rest are overlapping errors that are acceptable

finished routing
did silk screen placing

Done placing

- drew a schematic symbol for the AS1100
- began rpi header pinout