Per:
https://github.com/discourse/discourse/commit/886616987983b6a9f532210e8598a9b5f0e60ed1
Groups can be invited and removed from private messages.
Per:
https://github.com/discourse/discourse/commit/886616987983b6a9f532210e8598a9b5f0e60ed1
Groups can be invited and removed from private messages.