0.056 on Default Branch

We found a lot more bugs than hoped while testing version 0.056 these past couple of days. Those bugs have been fixed and we've made the new version 0.056 the default build.

Additional Fixes:

• Fixed some bugs with item and mastery serialization.
  
• Added save point for Pan when exiting a dungeon.
  
• Added save point for Pan when closing the Card menu.
  --- We'll probably add in logic to only save if something changed
  
• Fixed inventory sprites not disappearing when exiting a dungeon through the elevator
  
• Added a revert saves option in the main menu.
  --- We should be adding in a confirmation dialogue soon, so players don't accidentally lose their saves
  
• Fixed the Hell Dryer's rocket sprite. It now points the right way when fired to the right.
  

EDIT: Just got a bug report that Sensei mode was broken. That bug has been fixed and the fix uploaded.