Remove pure-python version of maps.
Whitespace tweaks to maps_fast.
Remove a test pointing to python maps version.
Remove Cython `base_fast`.

Didn't seem to be used anywhere anyways.
Rename `maps_fast` to `maps`.
Remove maps.c.

Haven't yet removed the helloworld.c due to my inability to compile the generated version.
Moves test_maps_fast.py to test_maps.py