Patch v.1.4.1 - various improvements

This new version of JICE includes a new mechanic as well as visual improvements:

• New mechanic - hover! Try holding Shift to hover in the air. Hovering will consume your energy
• New background featuring a planet! You are no longer stranded in a blue void with clouds
• New lighting! Tutorial level is now more.. blue. da ba dee da bu dai
• Player movement was changed to make it more dynamic
• Minor textures, models and UI fixes
• Minor bug fixes