[ttml2] Pull Request: Add xml:base to core vocabulary (#804).

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

== Add xml:base to core vocabulary (#804). ==
Closes #804.

See https://github.com/w3c/ttml2/pull/808

Received on Wednesday, 30 May 2018 03:54:16 UTC