training/train_nav.py (1 line):
	- line 1202: assert 'lstm' in args.model_type #TODO: Finish implementing curriculum for other model types


training/utils/preprocess_questions_pkl.py (1 line):
	- line 114: # TODO: mean subtraction


training/utils/preprocess_questions.py (1 line):
	- line 118: # TODO: mean subtraction