pydata/pandas — pull request #6408 by jreback (2014-02-19 13:01:14+00:00)
Title: API: pd.infer_freq interacts correctly with a Series

ENH: pd.infer_freq() will accept a Series as input
API: pd.infer_freq() will now raise a TypeError if given an invalid Series/Index type (GH6407)

closes #6407