wumpus

Copperbox revision 2273.

I've updated Wumpus-Rhythm and Wumpus-Tree to compile again.

I've had to disable some functionality in Tree due to affine transformations becoming monadic in Wumpus-Basic / Wumpus-Core. Rather than update Tree accordingly, the best thing to do is re-evaluate whether affine trafos really need to use InterpretUnit - which makes them monadic. Unfortunately this is a lot of change again...