Added base class
Added base class

BerkeleyAutomation/rlpy,MDPvis/rlpy,silgon/rlpy,imanolarrieta/RL,BerkeleyAutomation/rlpy,BerkeleyAutomation/rlpy,silgon/rlpy,rlpy/rlpy,rlpy/rlpy,silgon/rlpy,imanolarrieta/RL,rlpy/rlpy,MDPvis/rlpy,imanolarrieta/RL,MDPvis/rlpy