PERF: dataframe.from_records: read into list w/ itertools.islice when specifying nrows #6700
DOC: add to docstring of core/groupby/Grouper
BLD: use numpy 1.8.1 in 2.7 build
     use scipy 0.13.3 in 3.3. build
BLD: move sql libs up in requirements to facilitate building wheels
dataframe bar plot can now accept align keyword
EHN/FIX: Add na_position parameter to DataFrame.sort. Fixes GH3917
TST: Skip mergesort test if `np.argsort` raises TypeError on any mergesort.
BUG: Bug in consistency of groupby aggregation when passing a custom function (GH6715)
COMPAT: change Series.sort to use na_position rather than deprecated na_last
BUG: shift now converts named axis to numer. fixes #6724
TST: test named shift with named axis
TST: Added tests for pairwise behaviour in rolling moments.

Added a test for rolling_cov_pairwise similar to the test for
rolling_corr_pairwise.

Added tests for ewmcov_pairwise and ewmcorr_pairwise.

Added test for expanding_cov_pairwise based on the test for
expanding_corr_pairwise.
ENH: Implemented pairwise rolling moment functions.

Implemented rolling_cov_pairwise function.

Implemented ewmcov_pairwise and ewmcorr_pairwise.

Implemented expanding_cov_pairwise.

Refactored the rolling moment functions to use _flex_pairwise_moment.
ENH: Folded the *_pairwise rolling moment functions into the base function API.
DOC: Updated documentation for pairwise API changes.

Added a release note and example usage for pairwise=True.
ENH: Marked rolling_corr_pairwise and expanding_corr_pairwise as deprecated.
added percentage rank to DataFrame.Rank
SQL: add index_label keyword to to_sql
BUG: bug in BlockManager._get_numeric_data, with invalid combine
BUG: Bug in resample when how=None resample freq is the same as the axis frequency (GH5955)
BUG: Bug in downcasting inference with empty arrays (GH6733)
DOC: small doc fixes (build warning in sym_diff + formatting in release notes)
BUG: MPL Plot cannot make loglog option worked