wumpus-basic

Copperbox revision 1687.

First step in redesigning the Graphic types.

The new Graphic type is no longer a function from Point to [Primitive] - instead its a function from DrawingContext to [Primitive] (actually the list is a Hughes list, for good concatenation behaviour).

It seems that only certain Graphics are from Point -> [Primitive] so I've a new type to capture that:

type CFGraphic u = Point2 u -> Graphic u