[Design-team] Switch to Mailman 3 and HyperKitty

[Aurelien Bompard]

Hello designers!

As discussed at Flock and with Mizmo recently, you've been switched to Mailman 3 and
HyperKitty!
There are a few things you should expect after this change, especially if you're using
procmail for filtering: http://fedoraproject.org/wiki/Mailman3_Migration
But it should mostly work as before.
You can enjoy HyperKitty for your list by going here:
https://lists.fedoraproject.org/archives/list/[e-mail]...
I hope you'll like it, and if you have any questions, feel free to ask. Bug reports
should go here: https://gitlab.com/mailman/hyperkitty/issues

Thanks!
Aurélien