Thanks for writing this extension!

Considering the following setup:

.. click:: test:hello
   :prog: test
   :show-nested:

It would be nice if one can refer to the resulting documentation (e.g. for one of the nested commands) just as one can reference normal functions via the directives documented in http://www.sphinx-doc.org/en/stable/domains.html#cross-referencing-python-objects .

I.e. it would be nice if something like :py:click-command:'test.hello' would insert a link to the relevant part of the documentation.