Ian Tester / Pro Micro joystick adaptors - History

Update to KiCad 9, update some symbols and footprints

Remove the 'PC game port' symbol, just use a standard DA15 socket part.

Update all schematics - Put parts in boxes, fix input/output direction of global labels, add title blocks

Add quad NES adaptor board using MickGyver's design

Micks has only two ports though, so his sketch will have to be adapted to four ports.