[imsc] Pull Request: Clarify handling of foreign elements and attributes

palemieux has just submitted a new pull request for https://github.com/w3c/imsc:

== Clarify handling of foreign elements and attributes ==
Close #213 
See https://github.com/w3c/imsc/issues/213#issuecomment-356486553

See https://github.com/w3c/imsc/pull/299

Received on Tuesday, 16 January 2018 19:26:13 UTC