Makes zone button updates more accurate. Still needs some work. Too many button pushes will make buttons flicker a lot, but statuses should be correct after flickering is done.
Merge pull request #6 from mattnichols/message_updates

Makes zone button updates more accurate.
Arduino updates to v2.3

Adds flexibility to use relays with Active HIGH or Active LOW.
Improved notes and other minor edits.
Merge pull request #7 from d8adrvn/Arduino-updates-to-add-relay-flexibility-and-notes

Arduino updates to v2.3