adde symbol and footprint for the RF modulator

-added CN4 CN5 and CN6 -placed all but one component in PCB

-added some 3d models -fixed ferrite bead footprints

-swapped 5v to 8v inthe video section. -swapped collector and emitter connections for Q1 -sourced more coponents -started pcb

-Started CoCo 3 schematic using CoCo 2 schematic as a reference. -Layed out most of the main components. -Finshed power section -Finsihed CPU section -Finsihed ROM section _Finished DRAM section