Merge pull request #6974 from dalejung/panel_shift_revert

Panel shift revert
PRF: Optimize 2d take operations.

Use memory views
DOC: release/v0.14.0.txt notes
BUG: enabling subplots works unexpectedly
ENH: add count method to groupby (GH5610)
ENH: infer selection_obj on groupby with an applied method (GH5610)
BUG: fixup Categorical.describe to work with 'fixed' count
CLN: remove __inv__, __neg__ from series and use generic version
CLN: remove __wrap_array__ from generic (replace with __array_wrap__)
BUG: handle as_index=False for pseudo multi-groupers (e.g. .describe())
Merge pull request #7000 from jreback/groupby_counts_agg

ENH/BUG: add count to grouper / ensure that grouper keys are not included in the returned
ENH: Implementing str_wrap function
DOC: add performance reference in v0.14.0.txt
DOC: corrections in v0.14.0
API: add is_beg_month/quarter/year, is_end_month/quarter/year accessors (#4565)
DOC: add notes to the groupby.rst docs
Merge branch 'master' of https://github.com/mikebailey/pandas into mikebailey-master
BUG: parser_source as a filename with non utf-8 encoding in Windows filesystem (GH6807)
BUG: duplicate indexing with iloc
Merge pull request #7006 from jreback/iloc_dups

BUG: duplicate indexing with setitem with iloc (GH6766)
BLD: fix failing vbench cases
BLD: travis changes forced system site-packages now unavailable
BLD: fix nose version at 1.3.0 to avoid py3 issues