move class LanguageBot(object) into babelbrain.py
todo: refactor code to remove global var calls to sentence and implement changes in other files
refactor code to modularize functions
implements init_new_features_dict, rand_init_feature_weights, extract_features
todo: finish normalize_values_dict, refactor unit tests
moves classification_score into fitness.py
todo: finish refactoring, implement cost function and genetic optimization algorithm