[ttml2] Pull Request: Remove ttp:activeArea (#428).

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

== Remove ttp:activeArea (#428). ==
Closes #428.

See https://github.com/w3c/ttml2/pull/558

Received on Monday, 15 January 2018 08:27:43 UTC