Log Message:
py-sphinx: updated to 1.6.6

Release 1.6.6:

Features added
* autodoc: Sort dictionary keys when possible
* VerbatimHighlightColor is a new
  :ref:LaTeX 'sphinxsetup' <latexsphinxsetup> key
* Easier customizability of LaTeX macros involved in rendering of code-blocks
* Show traceback if conf.py raises an exception
* Add :confval:smartquotes to disable smart quotes through conf.py
* Add :confval:smartquotes_action and :confval:smartquotes_excludes

Bugs fixed
* sphinx-apidoc: Don't generate references to non-existing files in TOC
* latex: reST label between paragraphs loses paragraph break
* html: Apply fixFirefoxAnchorBug only under Firefox
* napoleon depends on autodoc, but users need to load it manually
* automodule fails to document a class attribute
* C++: properly link class reference to class from inside constructor
* PDF build broken by Unicode U+2116 NUMERO SIGN character
* PDF output: Pygments error highlighting increases line spacing in code blocks
* Support :emphasize-lines: in PDF output
* Sphinx crashes with pickling error when run with multiple processes and
  remote image
* Respect the quiet flag in sphinx-quickstart
* Race conditions when creating output directory
* For PDF 'howto' documents, latex_toplevel_sectioning='part' generates
  \chapter commands
* Two todolist directives break sphinx-1.6.5
* Fix links to external option docs with intersphinx
* Private members not documented without :undoc-members: