[ttml2] Pull Request: Add document proceessing context override semantics for effective con…

skynavga has just submitted a new pull request for https://github.com/w3c/ttml2:

== Add document proceessing context override semantics for effective con… ==
…tent and processor profile construction (#467).

Closes #467.

See https://github.com/w3c/ttml2/pull/468

Received on Saturday, 14 October 2017 22:49:42 UTC