Switched to a new architecture (Vineyard is a visitor for Filtration),
added LowerStarFilation, examples/grid (pdbdistance-vineyard in particular)
#ifndef __TYPES_H__
#define __TYPES_H__
#include <limits>
/* Types */
typedef bool Sign;
typedef short int Dimension;
const Sign POS = true;
const Sign NEG = false;
typedef double RealType;
typedef unsigned int SizeType;
static RealType Infinity = std::numeric_limits<RealType>::infinity();
typedef const unsigned int& version_type;
#endif // __TYPES_H__