[ttml2] Pull Request: Add `#region-implied-animation` to the at risk list.

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

== Add `#region-implied-animation` to the at risk list. ==
Closes #847

See https://github.com/w3c/ttml2/pull/848

Received on Thursday, 21 June 2018 16:07:05 UTC