Final Boost.Python commit

From a desire to rewrite the code to structure it better, make it more performant and easier to extend, I have moved away from using Boost.Python. Instead, the C++ layer will now be exposed via Cython, and many of the actual algorithms will be written in Cython. I do not plan on maintaining the old Boost.Python code due to time constraints. Instead, I suggest moving to the Cython version.