DOC: remove unused matplotlib directives from conf.py
ENH: Add categorical support for Stata export

Add support for exporting DataFrames containing categorical data.

closes #8633
xref #7621
Removing typo as Renaming

Should be 'Removing', I think, if I'm not misunderstanding.
Merge pull request #8800 from gepcel/patch-1

Removing typo as Renaming
Merge pull request #8756 from jorisvandenbossche/mpl-directives

DOC: remove unused matplotlib directives from conf.py
Merge pull request #8767 from bashtage/stata-categorical

ENH: Add categorical support for Stata export
ENH: serialization of categorical to HDF5 (GH7621)