``domain`` and ``domain-rolename``.
- References now get the class ``internal`` if they are internal to
the whole project, as opposed to internal to the current page.
+ - External references can be styled differently with the new
+ ``externalrefs`` theme option for the default theme.
+ - In the default theme, the sidebar can experimentally now be made
+ collapsible using the new ``collapsiblesidebar`` theme option.
- #129: Toctrees are now wrapped in a ``div`` tag with class
``toctree-wrapper`` in HTML output.
- The ``toctree()`` callable in templates now has a ``maxdepth``