Beerformer week 3: Mechanic

Mechanic: you can now flip the character to its side by pressing left ctrl (at the cost of jump height). Go explore! (mostly on the right side of the level)

-- changes (from week 1 since I was ill :( ) --

- Added the mechanic ;)

- Fixed collision with ground (although there now is a bit of bounce :( 

- Cried a lot in transform.rotate, animation and coroutines 

- Made "a r t" for the beercan in an attempt to build a level (but then I fell ill so didn't manage to go any further than the art)