wumpus

Copperbox revision 2353.

I've sorted out the parallelogram and trapezium shapes in Wumpus-Drawing at last (after re-working their primitive path generators in Wumpus-Basic). It's disappointing that this took all the bank holiday weekend to do. The Shapes are one of the clunkiest parts of Wumpus and at some point they will need a complete overhaul, but as I was barely touching them this time around consuming four days work to fix bugs was tiresome.