[packagers] Mailing list migration

[pentarctagon@xxxxxxxxxxxx]

HI,

Currently Wesnoth uses Tuxfamily to host its mailing lists, however since Tuxfamily is on its last legs (https://forum.tuxfamily.org/post/3381/#p3381) we are migrating to mailing lists hosted on groups.io. The new email address for the mailing list is wesnoth-packagers@xxxxxxxxx and to subscribe use wesnoth-packagers+subscribe@xxxxxxxxx.

This mailing list will remain available for an unknown amount of time given the situation, however all future announcements will be made through the groups.io mailing list. If you run into any problems please let me know - I can be contacted here, on the Wesnoth forums, or via Wesnoth's Discord/IRC.