Update 1.2.09213

This update fixes a few more annoying issues, some of which were introduced in recent updates (sorry!)

• Fixed an issue with mouse wheel zooming the wrong way when changing scroll direction.
  
• The region reveal animation no longer zooms out.
  
• Fixed clue numbers not disappearing during the region reveal animation.
  
• The reveal animation has been polished up a bit, with nicer SFX.
  
• Fixed an issue with UI region/count info only updating once a second.
  
• Clearing errors no longer makes the horrible overlapping sound of dozens of tiles flipping.
  
• The undo button is now hidden once you've completed the puzzle.
  
• Slowed down the endgame replay slightly.