Specification status report for TPAC 2019 #782

Please can you respond to this comment with a brief specifications status report for the WebApps meeting at TPAC. The report should address the following:

• What progress has your spec made in the last 12 months?
• Is anything blocking your spec from moving to CR?
• If yes, what is your plan to unblock it and do you need any help?
• What do you want to achieve for your spec in the next two days (of breakout sessions)?

We're tracking these status reports in WebApps issue #19

Thanks.