This now uses year ranges, which I'll update annually.
This also renames "R-T Specialty" to "Ryan Specialty Group". The latter is
the parent company of the former. I was originally employed under the
former when LoVullo Associates was purchased, by I now work for the parent
company.
This makes changes necessary to new ref format (which includes arity).
* src/graph.xsl: @ref function arity added
* src/preproc/expand/expand-sequence.xsl: @ref function arity added
* tools/literate-xsl: Submodule updated
Mike Gerwitz