update the matrix to be 10x8 instead of 8x10

Wouldn't work the other way due to diodes.
fix some problems in the keycap.
turn on more pins for cols.
give ourselves 10 rows.
D7 not D6.
fix the b and n keys.
remove ascii art, the array is good enough.
remove extra column pins.
reverse order of pins so plug will fit straight on.
fix n.
Fix p.
fix /
fix key names.
R5C6 is nothing.