Timed Text Markup Language 2 (TTML2)

2016-05-25: ACTION-2048 JF to review.
2016-07-07: JF sent input to list.
2016-10-13: PLH says this going to CR in January, so we need to circle back on this review.
2017-01-11: Closing this out. Lots of a11y people in that WG.
2017-07-12: Explict review request received.
2017-09-04: Reminder of explicit review request.
2017-09-06: ACTION-2143 Janina to re-review.
2017-09-20: Janina reports no issues, and good coverage of MAUR.
2017-09-27: Response to review request indicating no issues.