A small demo update! (Ver 0.41)

A small demo update! (Ver 0.41)

• Improved the collision check when merging towers.
  
• Added extra effects, more for the transition into the third act, but some of this will be seen in the demo.
  

Bugfixes:

• The cost of the skill 'Forge' is displayed correctly (1 gold)
  
• Fixed an error with sssY variable
  
• Minor text issues