Added code to expose the persistence_diagram class, the bottleneck_distance function and the point class to python. Most of the commonly used methods for each class have been exported. The constructor for point now requires that a data argument be provided along with x and y coord. This needs to be made optional. The constructor for persistence_diagram could possibly be rewritten as well.

#ifndef __NUMBER_TRAITS_H__
#define __NUMBER_TRAITS_H__

template<class NumberType_>
class number_traits
{
	public:
		typedef							NumberType_									NumberType;

		static NumberType&				normalize(NumberType& n)					{ return n; }
};

#endif