Merge branch 'release/preview'
Added events to camera script.
Added paralax background, player collision and jumping.
Substituting hardcoded curve length for actual one.
Added ability to power jump by holding the jump longer.
Refactoring jump adapter.
Added new types of obstacles.
Added sound effects.
Added transitions for stopping and starting.
Adding checkpoints.
Removing useless setters.
Fixed reading data from jump curve.
Moving script to appropriate folder.
Added audio transitions.
Adding chechpoint graphics, finish line and victory sound.
Adding Menu items.
Formatting sources.
Level design.