[dxwg] new commits pushed by dr-shorthair

The following commits were just pushed by dr-shorthair to https://github.com/w3c/dxwg:

* renamed time and role to clarify that they are instances
  by Simon Cox
https://github.com/w3c/dxwg/commit/09f17131891062ea5d3effb26d80af3a95a38646

Received on Sunday, 3 June 2018 06:11:50 UTC