Check both "references" and "in-reply-to" headers when determining mailman3 subtitle.
Check both "references" and "in-reply-to" headers when determining mailman3 subtitle.

Ghost-script/fedmsg_meta_fedora_infrastructure,sayanchowdhury/fedmsg_meta_fedora_infrastructure,fedora-infra/fedmsg_meta_fedora_infrastructure,opoplawski/fedmsg_meta_fedora_infrastructure