Alphashapes and Python bindings
* converted alphashapes2d to the new format
* added Python bindings for alphashapes
* added sample alphashapes.py that dynamically distinguishes between 2D and 3D
#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