WebVTT CR Update

Dear APA,

I'd like to bring your attention to last week update of the WebVTT 
Candidate Recommendation. The new specification did not make substantive 
changes to its specification but did mark 3 features at risk:
[[
The following features are at-risk, and may be dropped during the CR period:
     collision avoidance with snap-to-lines false
     ::cue-region pseudo-element
     :past and :future pseudo-classes
]]
https://www.w3.org/TR/2019/CR-webvtt1-20190404/

To the best of my knowledge, none of those features are affecting 
accessibility but we'd like confirmation from the APA WG.

The current deadline for comments is May 2, since we're trying to figure 
out whether it's possible to move the spec beyond CR before the Group 
rechartering but, if you need extra time to investigate this, please let 
us know.

Thank you,

Philippe