* Add default_role for Sphinx.
Fix a bunch of broken refs along the way, which become
errors now via -W if you have default_role set.
In theory you can catch those via sphinx-build -n (i.e.
nitpick mode), which IMHO is a decent idea anyhow, but it's
a longer diff to enable that because it'd involve fixing a
bunch of the places that try to reference types that don't
exist (e.g. :type foo: Any value). But obviously can be done.
Also didn't actually use this anywhere yet (the any role),
but will do so in a follow-up if this is acceptable.
* Remove the roles from builtin objects to demo any.
* Style.
* Add z.i to intersphinx.
Enables the link to z.i.Interface.
* Enable nitpick mode.
Fix the remaining broken links or whitelist them via nitpick_ignore.
* Kill all :func:s.
* Kill all :class:es.
* Kill all :doc:s.
* Kill all :ref:s.
Except one, that probably meant :func:, and which
is a duplicate ref.
* Kill :exc: and :data:.
* Kill :mod:s.
* Kill new explicit refs from the merge.
Julian Berman