Merge branch 'formatting' into 'master'

.gitignore

backends/baselines_learner.py

backends/controller_base.py

backends/kerasrl_learner.py

backends/learner_base.py

backends/manual_policy.py

backends/mcts_learner.py

backends/online_mcts_controller.py

backends/policy_base.py

backends/rl_controller.py

env/env_base.py

env/road_env.py

env/simple_intersection/__init__.py

env/simple_intersection/features.py

env/simple_intersection/road_geokinemetry.py

env/simple_intersection/road_networks.py

env/simple_intersection/shapes.py

env/simple_intersection/simple_intersection_env.py

env/simple_intersection/utilities.py

env/simple_intersection/vehicle_networks.py