[ttml2] Pull Request: Add override support for validation abort processing (#672).

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

== Add override support for validation abort processing (#672). ==
Closes #672.

See https://github.com/w3c/ttml2/pull/761

Received on Thursday, 17 May 2018 04:39:06 UTC