Added documentation for the python classes Point and PersistenceDiagram. Removed the __sub__ method for PersistenceDiagram. Minor renaming.
Renamed BottleneckDistance to bottleneck_distance.
Renamed intervals iterator for PersistenceDiagram to points. Seems in better conformance with usage.
#include <topology/chain.h>
#include "static-persistence.h"
namespace dionysus {
namespace python {
typedef SPersistence::Chain VChain;
} } // namespace dionysus::python