[ttml2] Pull Request: apply changes from TTML1

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

== apply changes from TTML1 ==
Partially closes #358 

See https://github.com/w3c/ttml2/pull/602

Received on Monday, 29 January 2018 23:07:55 UTC