Agent movement planning in limited-observable environment

Implemented algorithms:

• A*-replanning
• LPA* https://www.cs.cmu.edu/~maxim/files/aij04.pdf
• D* Lite http://idm-lab.org/bib/abstracts/papers/aaai02b.pdf
• LSS-LRTA* https://www.ijcai.org/Proceedings/11/Papers/104.pdf