dqnclipped_dqnreg_prelim_implementation

• Implementing DQNClipped and DQNReg Algorithms from https://arxiv.org/abs/2101.03958 in Stable Baselines 3: https://github.com/DLR-RM/stable-baselines3
• Makes minor modifications to the SB3 repo's dqn.py and utils.py file
• Also included are scripts for running the experiment, for plotting results, and results of the trials
• See blog post for more details: https://medium.com/aureliantactics/implementing-dqnclipped-and-dqnreg-with-stable-baselines-4e3f02160466