BUG: compat_pickle should not modify global namespace
DOC: add pickle compat warning to docs
CLN: PEP8 cleanup of the io module
BUG: Work-around a numpy regression

numpy 1.7.0 erroneously raises IndexError instead of ValueError
from ndarray.item() when the array is not of length 1. This can be
seen as a failure of

    computation.tests.test_eval.TestScope.test_global_scope

for the cases that engine='numexpr'.

Absorb the splatter from this regression by explicitly catching the
erroneous IndexError.
DOC: Mention #5666 in 0.13.0 release notes
BUG: Fix for MultiIndex to_excel() with index=False.

Issue #5616
BUG: HDFStore improperly inferring a freq on datetimeindexes
DOC: cookbook.rst update
BUG: properly handle a user function ingroupby that returns all scalars when
     grouping on a dataframe (GH5592) revisited
BUG: handle coercion of None for date/time like dtypes in a groupby result
BUG: Bug in repeated indexing of object with resultant non-unique index (GH5678)
API/ENH: Detect trying to set inplace on copies in a nicer way, related (GH5597)
CLN: remove core/generic/_setitem_copy in favor of obj.is_copy
from the mbp