A lot of major changes.
	- Camera got rewritten. It's faster and a lot more memory efficient.
	- Fixed the messing-up-coordinates bug.
	- Got rid of Drawpanel. (Good riddance.)
	- Reduced compilation warnings to a single one.
	- Removed the code in maptool. It became evident that it needs to be
rewritten anyway.
	- Improved the overall world modell.
	- Added a ton of interfaces, these will be useful for future modders.
	- Moved files around sot that their locations are a bit more
systematic.
	- Overall changed 71 files in some way or another.