src/simulator/image_to_box2d.cpp (2 lines):
	- line 391: // TODO: re-implement free draw input without opencv.
	- line 398: // TODO: re-implement without opencv.


agents/offline_agents.py (1 line):
	- line 483: # TODO: move to a flag.


src/python/phyre/action_simulator.py (1 line):
	- line 168: # FIXME: merge this into single call to simulator.