Reminder: MathML Full meeting on Thursday

 We meet at our standard time on Thursday: 10am Pacific, 1pm Eastern, 7pm
Central European Time.

This will be an extended 2 hour meeting so we can get through some
important discussions involving "intent".

The meeting details were sent to the W3C members-only "member-math" mailing
list <https://lists.w3.org/Archives/Member/member-math/2021May/0000.html> for
the group. The regulars for this group should have the meeting details in
their calendars.

Agenda
1. Announcements/Updates/Progress reports
2. Hints (@) and properties (:) details/merging/multiples, etc (#436
<https://github.com/w3c/mathml/issues/436>, #440
<https://github.com/w3c/mathml/issues/440>, others?)