Creating Group URIs

It is common when dealing with groups of Agents to want to create a URI to
denote those agents. Yet there is no systematic way to create a URI from a
set of its participants. This simple spec solves the problem by creating a
FOAF Group with members the URIs, canonicalizing it, taking the hash, and
then creating a URI from that hash.

https://solid-live.github.io/specs/groupuris/

My use case is to create group teleconferences using the roll call JS
library [1].  You have two or more participants, and that can uniquely
generate a hash, which is used to create a chat room, uniquely for your
group based in the algorithm above.

Feedback welcome!

[1] https://rollcall.audio/