Added new neighborhood code
Reorganized includes in type.hpp
Updates to neighborhood
Introduced dynamic parameters to neighborhood arrfunc
Updated arrfunc call syntax for in neighborhood tests
Added basic mask functionality and tests in neighborhood_arrfunc
Add testing for masked neighborhoods
Cleaned up passing of auxiliary keyword arguments
Add freeing of neighborhood malloced memory
Fixed memory leak in neighborhood_arrfunc
Merge pull request #135 from izaid/neighborhood

 Neighborhood