add level 4
Merge branch 'master' of https://github.com/tompudding/spacefight3000

Conflicts:
	game_world.py
view port following initial
Merge branch 'master' of https://github.com/tompudding/spacefight3000

Conflicts:
	game_world.py
follows during teleport
Merge branch 'master' of https://github.com/tompudding/spacefight3000

Conflicts:
	modes.py
Merge branch 'master' of https://github.com/tompudding/spacefight3000
Merge branch 'master' of https://github.com/tompudding/spacefight3000