BUG: allow std to work with timedeltas (GH8471)
Merge pull request #8476 from jreback/td_std

BUG: allow std to work with timedeltas (GH8471)
More flexible describe() via include/exclude type filtering

This enhance describe()'s output via new include/exclude list arguments,
letting the user specify the dtypes to be summarized as output.
This provides an simple way to overcome the automatic type-filtering done
by default; it's also convenient with groupby().
Also includes documentation and changelog entries.
DOC: Try to use matplotlib ggplot style
DOC: Fix some warnings is visualization.rst
sub-frame assignment of a multi-index frame breaks alignment
DEPR: deprecate value_range (GH8481)
Merge pull request #8480 from behzadnouri/align-mi

BUG: sub-frame assignment of a multi-index frame breaks alignment
BUG: Bug in groupby .apply with a non-affecting mutation in the function (GH8467)
Merge pull request #8483 from jreback/value_range

DEPR: deprecate value_range (GH8481)
DOC: reference to docs for describe
Merge pull request #8484 from jreback/groupby_fix

BUG: Bug in groupby .apply with a non-affecting mutation in the function (GH8467)
DOC: indexing.rst fixes w.r.t (GH8227)
DOC: fix bunch of doc build errors
Merge pull request #8485 from jreback/index_fixups

DOC: indexing.rst fixes w.r.t (GH8227)
Merge pull request #8487 from jorisvandenbossche/doc-fixes

DOC: fix bunch of doc build errors
DOC: warning about copying for df.append/concat. Fixes #7967

updating concat section to reflex comments on PR #8488

DOC: placing the concat notes in a .. note:: block. #8488

DOC: Minor formatting changes for #8488
Merge pull request #8488 from hunterowens/speed-docs

DOC: warning about copying for df.append/concat. Fixes #7967
ENH: Add orient argument and split option to DataFrame.to_dict. (GH7840)

Update documentation with deprecation and enhancement notices.

Remove indentation from list in docstring.
DOC: fix notes in plot() docstring