[ttml2] Pull Request: Add #{presentation,profile,transformation}-version-2 feature designat…

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

== Add #{presentation,profile,transformation}-version-2 feature designat… ==
…ors (#473).

Closes #473.

See https://github.com/w3c/ttml2/pull/518

Received on Friday, 29 December 2017 00:00:54 UTC