Bugfixes

• Fixed bug of some levels missing the green block

Additions

• Added 4 difficulties: Easy, Normal, Hard, and Very Hard
• Added a menu where you can select the difficulty

Changes

• Changed the level generator so that it would generate levels based on the difficulty
• When you reset the level with Ctrl + E, you lose 1000 points

Warning: Because of the new difficulty system, after a while the levels will become so hard that they will litterally be impossible to beat (this effect is most appearent on hery hard mode).