Removed the points iterator in PersistenceDaigram; replaced it with a __iter__ method.
Got rid of some python code in __init__.py, since it was not needed with the above change.
Changed the docs to reflect this.
#ifndef __PYTHON_ZIGZAG_PERSISTENCE_H__
#define __PYTHON_ZIGZAG_PERSISTENCE_H__
#include <topology/cohomology-persistence.h>
#include <boost/python.hpp>
#include "birthid.h"
namespace dionysus {
namespace python {
typedef CohomologyPersistence<BirthID> CohomPersistence;
} } // namespace dionysus::python
#endif