Using autopep8 (https://github.com/hhatto/autopep8) on all py files.
Some lines were changed manually (those which may change the logic).

Have not fixed E501 line too longs, these are the only pep8 failures.

Check current pep8 compliance of all py files in current directory:
for f in *.py; do pep8 $f; done

Run autopep8 on py files in current directory:
for f in *.py; do autopep8 -i $f; done
Reverted 4 test failures from autopep8 commit:
66fc98f0b7316331b505c4c4d4929fcbdc668d86

Arising from correcting PEP8 E712, changing == boolean to is boolean.
Possible that these are bugs in the tests?
shortened lines over 140 chars where appropriate
BUG: exclude non-numeric data from DataFrame.quantile #2625
DOC: release notes
ENH: enable pivot_table with more complex aggregation function and hack multiple level column unstacking into existing hierarchical columns. close #2643
DOC: release notes
Merge PR #2632
BUG: fixed old version compatibility warnings
     added copy_to method to allow file upgrades to new version
didn't include the test file (in _static of docs dir)
DOC: minor doc updates to conform with new datetime64 behavior
DOC: release notes formatting fixup
BUG: updated the copy method to work with supplied options
ENH: added overwrite parameter to copy (defaults to True)
ENH/BUG: refactor of non-table HDFStore to put in object form (Storer class), for future enhancements
         added shape to non-table display
         closes GH2637
TST: more tests, added ncols to table output in printing
BLD: rebased - for some reason was not up to date
BLD: merged in #2632 locally, resolved a couple of issues