[Geary] Moving to discourse.gnome.org

[Niels De Graef <nielsdegraef gmail com>]

Dear subscribers of geary-list,

We've set up https://discourse.gnome.org a year and a half ago, as
part of an attempt at making the GTK mailing list more friendly to
newcomers. This experiment seems to have proven itself well enough,
and has since expanded to other territories as well. As such, we
believe it's time to make the same switch for geary-list.

This means that this mailing list will be archived in favor of
continued discussion at GNOME's Discourse instance. No need to worry
that this will mess with your workflow: it is still possible to get
notifications by email by subscribing to the [geary] tag. You can also
still reply by e-mail if you prefer. Just like before, it's also
possible to receive a general weekly digest.

Finally, feel welcome to say hi by introducing yourself over at
https://discourse.gnome.org/t/say-hello-thread/ !

Cheers,
Niels De Graef (nielsdg)