new release: wumpus-basic

Copperbox revision 1780.

I've reverted the changes to Shapes.Plain and made a new release of just wumpus-basic - revision 0.11.0.

I think I'll have to rework the transformations on primitives in Wumpus-Core before I can improve Shapes in Wumpus-Basic, so as a lot has changed in Wumpus-Basic since version 0.10.0 an interim release seems like a good idea. Wumpus-Microprint and Wumpus-Tree work with Basic version 0.11.0 only the .cabal file needs a version bump, so I am not making new-release of those two.