Added extra functionality to Point class( an iterator ) and PersistenceDiagram( dimension property and __len__ func ).
persistence-diagram.h:
Added a new read-only dimension member and member function to access it.
With a new constructor that that takes in an int type to initialize dimension.
persistence-diagram.cpp:
Added new bp::init constructor. Takes in an integer type to initialize the dimension. Exposed the dimension property. Exposed the size property via a __len__ method.
__init__.py:
Added an iterator for Point objects. This iterates over the coords and then the data( if present ).
#include <boost/python.hpp>
namespace bp = boost::python;
#include "distances.h"
namespace dp = dionysus::python;
boost::shared_ptr<dp::ListPointPairwiseDistances>       init_from_list(bp::list lst)
{
    boost::shared_ptr<dp::ListPointPairwiseDistances>   p(new dp::ListPointPairwiseDistances(lst));
    return p;
}
void export_pairwise_distances()
{
    bp::class_<dp::ListPointPairwiseDistances>("PairwiseDistances", bp::no_init)
        .def("__init__",        bp::make_constructor(&init_from_list))
        .def("__len__",         &dp::ListPointPairwiseDistances::size)
        .def("__call__",        &dp::ListPointPairwiseDistances::operator())
    ;
}