Exercises for week 4

irlc/ex04/__init__.py

irlc/ex04/control_environment.py

irlc/ex04/discrete_control_cost.py

irlc/ex04/discrete_control_model.py

irlc/ex04/discrete_kuramoto.py

irlc/ex04/locomotive.py

irlc/ex04/model_harmonic.py

irlc/ex04/model_linear_quadratic.py

irlc/ex04/model_pendulum.py

irlc/ex04/pid.py

irlc/ex04/pid_car.py

irlc/ex04/pid_locomotive_agent.py

irlc/ex04/pid_lunar.py

irlc/ex04/pid_pendulum.py