Removed Singleton from reference (with Asher)
Cleansed "environment.Environment()" to World

Additionally, cleaned up import statements
and removed some old comments
(as well as now-obsolete code from Display)
Fundamental design change from singleton model to files importing environment model. Works because environment object need not call cells.
singleton deleted...holds breath
Made it so the magic print statement on line 107 of display doesn't actually print. Instead it prints to stderr
removed two files that are no longer used
Removed extraneous files

specifically test.py and thread_test.py
Re-Added globals.py for safety reasons

It **shouldn't** run fine without it
Merge branch '0.3.deathtosingleton'

Conflicts:
	environment.py