- 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)