Fatigue feature added to prevent stale matches — Wardens Steam update #518388

When matches get stale, meaning there are no units destroyed for multiple turns, then fatigue will kick in. It will slowly fill the board, causing any unit that touches it to get a fatigue counter on it. When the this counter reaches zero, the unit is destroyed. This helps to speed up matches, but remember that it is the first version, so some adjustments might be added in the coming weeks based on your feedback.