Some minor changes to the demo

COVEN

COVEN is a hyper-violent retro FPS where your path of vengeance will take you across time and space. Destroy your enemies and eat their flesh.

Just a small patch for the demo to fix some bugs and to make some minor changes to the level. - Fixed player getting stuck in holding state if the object they're holding breaks - Made doors easier to use - Added a new tutorial - A bunch of minor e1m1 changes