General helper classes and structs.

Classes
class	GeneralViewer< InputType >
	class GeneralViewer: A debugging tool; uses CImg for viewing the data flow at some point along the pipeline. More...
struct	Coord2D
	2 dimensional coordinate. More...
struct	CoordSpace2D
	A region within a 2D coordinate space, bounded by bottom left and top right coordinates. More...
struct	CoordSpace2DMap
	A mapping between two coordinate spaces. More...

---