Patch "Stack".3

Changes

• Adjusted the layout of "Tower" very slightly in a way that should not significantly impact any solutions.
• The audio credit and the reminder that more zones are still in development, are visible again in "PushThru".
  

Bug fixes

• Fixed a bug where certain music would play for a single game tick when exiting "Stack".
• Fixed a bug where completing "Tower" would put the player on an invalid tile.
• Fixed a bug where completing "Panda" would not properly load "Stack".