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)
Merge pull request #6408 from jreback/freq_ops

API: pd.infer_freq interacts correctly with a Series
API: validate conversions of datetimeindex with tz, and fixup to_series() to handle (GH6032)
Merge pull request #6398 from jreback/index_coerce

API: validate conversions of datetimeindex with tz, and fixup to_series() to handle (GH6032)
DOC: use ipython in bool replace doc warning
DOC: use code block for shorter error message
Merge pull request #6412 from cpcloud/replace-bool-doc-fix

DOC: use ipython in bool replace doc warning