Starting support for stochasticity.  Invovles changes to the
value function iteration as well as a new method.
ENH: Adding function s : shocks --> reals.
BUG: Should return n draws, no?
Cleanup. About to start on labor handling.
start of example
DOC: Some notes on implementing labor.
Cleanup.
ENH: My opinion of the BEA has dropped sizeably.