New battle backgrounds!

"Now this is a battle."
– Luther, Grand Master of Caliban

New battle backgrounds! The fight goes on with new backgrounds, based on the famous battles of Prospero, Calth and Isstvan III, among others.

This patch has also replaced two event decks from Sgt. Cork, Shiny Medal and Tough Sergeant, with new ones, to improve the balance going forward. Players in the middle of a run with that deck will not be affected, but it will stop appearing as an option in new event runs.

Never relent!