Using 8 On/Off buttons to control 8 relays

[GoForSmoke]

@alto777

I have no trouble picking out the relevant parts and repurposing them, but doing might be more trouble for someone trying to make eight buttons turn eight relays on and off.

I did mention that I have multi-buttons and matrix-buttons versions and that I will post them if asked. I gave the simplest one to get the idea across with less code.