DOC: default is copy=True but docstring said False
Display the correct error message when calling a binary moment without appropriate parameters.
Merge pull request #5498 from jreback/msgpack_perf

PERF: msgpack encoding changes to use to/from string for speed boosts
BUG: bug in to_msgpack for timezone aware datetime index
BUG: bug in to_msgpack for no freqstr datetime index (GH5506)

TST: msgpack complex test comparisons fixed

API: allow df.to_msgpack() to return a string (no need to specify None for the path_or_buf)
Merge pull request #5507 from jreback/msgpack_bug

BUG: bug in to_msgpack for timezone aware datetime index
DOC: doc corrections basics.rst / io.rst
BUG: Fixed various setitem with iterable that does not have a matching
     length to the indexer (GH5508)
Merge pull request #5512 from jreback/indexing_bug

BUG: Fixed various setitem with iterable that does not have a matching length to the indexer (GH5508)
ENH add cumcount groupby method
DOC add cumcount example to groupby.rst
Merge pull request #5510 from hayd/groupby_cumcount

ENH add cumcount groupby method
Ensure that we can get a commit number from git

Currently, git describe fails with "fatal: No names found, cannot describe anything."
Merge pull request #5520 from invisibleroads/patch-2

Ensure that we can get a commit number from git
BUG: Bug in getitem with a multi-index and iloc (GH5528)
Merge pull request #5529 from jreback/iloc_mi

BUG: Bug in getitem with a multi-index and iloc (GH5528)
CLN: PEP8 cleanup
Merge pull request #5038 from alefnula/pep8

CLN: PEP8 cleanup
CLN: More autopep8
PERF faster head, tail and size groupby methods
TST: correctly predict locale setability

Don't join the lang and encoding when performing the trial set, because

    locale.setlocale(locale.LC_ALL, ('it_CH', 'utf-8'))

succeeds, but

    locale.setlocale(locale.LC_ALL, 'it_CH.utf-8')

throws locale.Error.