JAX-RL initial release

JAX-RL v0.1.0

The first release of JAX-RL - a deep reinforcement learning library in JAX. Currently included are several deep RL algorithms (DQN, DRQN and PPO) and a selection of tabular algorithms. Also included are policies, a grid world environment and replay buffers. Still to be added in v0 are more algorithms, documentation and testing.