Add driver transistors to led-segment. Replace 74595.
Add boardedge connectors.
Change plcc4rgb pins to passive.

Fixes ERC warnings.
Fix boardedge_20 pad 1 position.
Fix ERC warnings for led-segment.
Add led-segment.cmp.
Add led-segment decoupling capacitor. Rewire for PCB layout.

Rewire transistors to have a better PCB layout.
Route led-segment board.

Should be complete now.