0.2.1 -- Example of history_as_csv -> Pandas. First row of history_as_csv: NO QUOTES.  The quotes were part of the column names in Pandas!
           so that if you made a DataFrame df from the csv, you'd have to access e.g. the retval column as df["'retval'"]. Further, because 'retval' isn't a valid Python
           identifier, you couldn't use the column names as attributes of the DataFrame.
           Added attribute to stats: history_as_DataFrame,  returns a DF if Pandas is installed (importable).
           Fixed all docs to reflect these changes :|, added the history_to_pandas.* files
0.2.1 -- Release
Merge branch 'release/0.2.1' into develop
Merge remote-tracking branch 'origin/develop' into develop