call for agenda: design call on 05/31 @ 11AM PST

Hey folks. Our next call is tentatively scheduled for next Thursday: May
31st @ 11AM PST.

Please add any topics you'd like to discuss in our planning doc:
https://docs.google.com/document/d/10dz_7QM5XCNsGeI63R864lF9gFqlqQD37B4q8Q46LMM/edit#heading=h.ozu502b9h3ey

We'll also reserve some time next week to discuss our charter. Our current
one is expiring, which gives us an opportunity to revisit and discuss
goals, timelines, etc. For reference:

   - Current charter: https://w3c.github.io/charter-webperf/
   - Current spec status: https://bit.ly/webperfwg-specs

If you have any particular thoughts or suggestions on the charter, please
let us know!
ig