ENH: Added Helper function for comparining changes.

Uses LinInterp.plot() now accepting **kwaargs and passing to mpl.
ENH: Generalize cycle for arbitrary kwargs.
FU: Formatting and an example
ENH:  Helper to find the wage setting schedule.
API: Change belmman* to accept maxfun

refactoring so that instead of passing argmax=True, just past a maxfun of
maximum or maximizer (argmax).

This commit has a bunch of other stuff too since ive been away from my comp.
Keep some of the results in this notebook.