[Initial check-in.  Code moved from Probability library to standalone library.
haskell@randomhacks.net**20071005121627] 
[Added MonadState instance from Haskell wiki.
haskell@randomhacks.net**20071005125656] 
[Moved example code in from old Probability package.
haskell@randomhacks.net**20071006181333] 
[Bumped version to 0.1.0.
haskell@randomhacks.net**20071007132703] 
[Fixed various problems pointed out by pacakge checker.
haskell@randomhacks.net**20071007134651]