Adding pymsbayes results files to test data.
Working on adding results parsing functionality.

Working on adding classes and functions to `parsing` module for parsing
simulation results output by a `dmc.py` analysis.
More work on results parsing classes and functions.

Adding tests and debugging `DMCSimulationResults.__init__`. Also, adding
try/except logic to result file parsing functions to check for poorly
formatted files.
Updating results parsing.

Debugging `DMCSimulationResults` result iterator methods and adding
associated tests.