Made the data argument in Point's __init__method to be an optional argument by making it a boost::python::optional.
add_subdirectory (alphashapes)
#add_subdirectory (ar-vineyard)
add_subdirectory (cech-complex)
add_subdirectory (consistency)
add_subdirectory (cohomology)
add_subdirectory (fitness)
add_subdirectory (pl-functions)
add_subdirectory (triangle)
add_subdirectory (poincare)
add_subdirectory (rips)