[ttml2] Pull Request: Add audio features to at risk list (#863).

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

== Add audio features to at risk list (#863). ==
Closes #863.

See https://github.com/w3c/ttml2/pull/864

Received on Tuesday, 26 June 2018 10:03:36 UTC