[ttml2] Pull Request: Change reference from WD to ED and add link in changes document (#437).

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

== Change reference from WD to ED and add link in changes document (#437). ==
Closes #437.

See https://github.com/w3c/ttml2/pull/527

Received on Saturday, 30 December 2017 21:41:31 UTC