Merging spreg_1.6 with my pysal fork.
Updating tests for integration with pysal 1.6
Fixing documentation on 'name_regimes'
Updating documentation and checking if there are more than 2 regimes when regimes methods are used.
Fixing defaults
Adding Chow test on lambda and updating dynamics of regime_err_sep and regime_lag_sep in combom models.
Matching Travis results. Multiprocessing errors still an issue.
Reloading to check new results from Travis.
Merge pull request #288 from pedrovma/spreg_integration_1.6

Merging spreg's repo with pysal 1.6.