Note: don't close your threads so that they are not "hidden" and other people with simmilar questions can more easily find your thread.
Because I think GitHub issues is superior to a mailing list. For example, the GitHub integration is obviously the best. You can just create an Issue for any question, suggestion or wish here.
To subscribe to the mailing list, just watch this repo. If you want to subscribe to a specific thread, watch that particular issue.