Algorithms (DDPG, TD3), Tests, Docs, and Environment overhaul

Phew, that's been a journey.

Features:

• Base algorithms are added and tested
• Environments are now completely redone and can be used for your data
• Online tutorial
• Code Climate grades my code B
• CircleCI tests written
• Somewhat reminiscent of documentation. It will be more complete soon.

Coming soon

• PyPi page
• BCQ implementation will be stress tested and tweaked
• TopK Off Policy Correction