RDFa + rel="me" (IndieAuth)

Howdy,

Yesterday I enabled IndieAuth on my personal website, by simply adding
rel="me" to couple of links[1]

Since I use RDFa for text/html version of content it also 'broke' graph
embedded on that page.

As one can see in linked template[1], I use vocab="http://schema.org/"
and rel="contactPoint" to mark my email, jabber, and various social
accounts like facebook, twitter, g+, github etc.

I wonder if someone has experience with using rel="me" together with
RDFa? In general I don't understand how RDFa can handle
rel="some_value_from_IANA_registry"[2].

I'll also make note of this possible issue on relevant wiki pages:
* https://www.w3.org/wiki/Socialwg
* http://indiewebcamp.com/IndieAuth

Thanks!

[1]
https://github.com/elf-pavlik/webprofiled/commit/a1c50224fecca747f68b2329f887d9472109cedb
[2] https://tools.ietf.org/html/rfc5988#section-6.2