Release Notes Issues not Linked
The release notes have a nice reference to the issue addressed by each bullet, but they're not linked to the actual issue.  In my quick scan, I didn't see an easy way to mark this up in the release notes rst.  You can use brute force to do it with something like:

[[[ - Add `to_clipboard` function to pandas namespace for writing objects to
    the system clipboard (`#774 <http://github.com/pydata/pandas/issues/774>`_) ]]]

If it won't mess up the docs, I can add these links to the rst.  But, I wanted to check first to see if this anyone knew of a simpler method or whether this would cause problems with the Sphinx stuff.

Ideas?
