BUG: allow get default value upon IndexError, GH #7725
added support for selecting multiple nth values
Fix DataFrame.to_latex() with MultiIndex columns

Currently, the positioning of \midrule is determined by the number of index
levels, not columns levels:

	>>> print pd.DataFrame({('x', 'y'): ['a']}).to_latex()
	\begin{tabular}{ll}
	\toprule
	{} &  x \\
	\midrule
	{} &  y \\
	0 &  a \\
	\bottomrule
	\end{tabular}

The fix is simple: use the number of column levels instead of the number
of index levels.
BUG: rolling/expanding_* treamtment of center
DOC: Release note format correction
Merge pull request #7995 from sinhrks/rn_7812

DOC: Release note format correction
ENH: plot functions accept multiple axes and layout kw
COMPAT: change pytables to use 3.0.0 API (GH7990)
Merge pull request #7994 from jreback/pytables_api

COMPAT: change pytables to use 3.0.0 API (GH7990)
CLN: change requirements to only use numpy>=17
Merge pull request #7954 from cpcloud/drop-np16

CI: Drop numpy 1.6 support
ENH: Add duplicated/drop_duplicates to Index
API: consistency in .loc indexing when no values are found in a list-like indexer (GH7999)
BUG: Area plot legend has incorrect color
BUG: related to GH5080, get_indexer choking on boolean type promotion (GH8024)
Merge pull request #8026 from jreback/series_map

BUG: related to GH5080, get_indexer choking on boolean type promotion (GH8024)
Merge pull request #8003 from jreback/indexing

API: consistency in .loc indexing when no values are found in a list-like indexer GH7999)
CLN: add html_encoding path to setup.py data
BUG: fix html reading for bytes types in py3
TST: add assertion that we will actually read a file