[webvtt] Pull Request: Editorial: clarify defaults for cue properties

zcorpan has just submitted a new pull request for 
https://github.com/w3c/webvtt:

== Editorial: clarify defaults for cue properties ==
Fixes #300.

See https://github.com/w3c/webvtt/pull/302

Received on Tuesday, 7 June 2016 09:25:35 UTC