[ttml1] Pull Request: Discourage animation class children on <br>

palemieux has just submitted a new pull request for https://github.com/w3c/ttml1:

== Discourage animation class children on <br> ==
Closes #325

See https://github.com/w3c/ttml1/pull/330

Received on Tuesday, 16 January 2018 06:31:45 UTC