Hotfix 0.54a

Thanks for playing the new levels!

Here's a couple of fixes for version 0.54a:

• fixed pike that came out of water in level 11
  
• outhouse states are now saved
  
• fixed issues related to switching some SISU weapons
  
• fixed texture and collision issues in level 12
  
• adjusted some acid pools in level 12
  
• added collision to Antero's hearts
  
• adjusted Mecha-Goblin stats + made them give armor when killed with SISU
  
• fixed level 13 "death ladder"
  
• minor texture updates