I had a faint hope that they'd fix "referer". Alas, no: <a href="http://tools.ietf.org/html/rfc7231#section-5.5.2" rel="nofollow">http://tools.ietf.org/html/rfc7231#section-5.5.2</a>
I would go a step further and say the IETF is dead ... so many of the new protocols are basically just after-the-fact corporate interests fronting up and publishing.