For anyone who wants to join the Slack you can use this invite.
@sadortun we are happy to share the link with anyone who asks but we don’t currently promote it on official channels. Personally I would welcome PRs to add it to GH readmes, but I’m not sure about the issue template.
Although there is the occasional Q&A on the Slack group I see it as a place for chat as Stack Overflow and the forum are much more suited to Q&A.