Hacked transitions.
Fixed test_notify_of in GameWorldTests.
Renamed variables and methods.
Implemented the rest of Joe's refactoring suggestions.
Merge branch 'Iteration-6' of https://github.com/NintenJoe/zol
Merge branch 'Task-2.8' of https://github.com/NintenJoe/zol

Conflicts:
	src/GameWorld.py
Fixed _load_new_segment.
Merge pull request #40 from NintenJoe/Task-2.8

Hacked transitions.