MARKOV: Put the Markov functions into a class wrapper and created a way to work around issues with multiple eigenvalues near unity to prevent nonstationary distirbutions from being considered stationary.
MARKOV: Eliminated the double docstrings by implementing Spencer's suggestion.  Renamed several variables and methods.
MARKOV: quick change.
Merge pull request #43 from jstac/markov_class

Nice work guys, this is neat.