Merge pull request #8 from Taikero/dev

Fix rune undo
Setting fix for possible bug where decks can be simulated with a higher cost than the player should have.
PEP8 fix.
Fixed bug with trim_decks that wasn't properly removing decks costing too much.
Adding Armored Mantis.
Merge pull request #2 from ricomoss/dev

Pull in changes from main fork