Mass Destroy Rocks

When starting a new game, you can now break all the rocks on the map by holding down the destroy rock button or key for 5 seconds. This will break ALL active rocks on the map. Given how dangerous this is it's only allowed on the first round of an Arcade game.
Bug fixes
-Resuming a game now correctly loads damage stats from the previous game. Top 3 tower list should work even when resuming a game.
-Resuming a game now correctly tracks Lou and Leafeater damage that counts towards the total damage done stat and Total KBs.
-Top 3 damage List was being sorted in reverse so the lowest damage was on top. Now displays the correct top damage towers.
Stay safe.
Changed files in this update