[ttml1] Remove XML 1.1 reference and create errata (#374)

nigelmegitt has just created a new issue for https://github.com/w3c/ttml1:

== Remove XML 1.1 reference and create errata ==
This removes a blocker from obsoleting XML 1.1. The references can be changed to XML 1.0 5th Edition safely.

Please view or discuss this issue at https://github.com/w3c/ttml1/issues/374 using your GitHub account

Received on Thursday, 19 September 2019 08:26:29 UTC