#slackdiscord Add check if we have a message with ID already to avoid sending duplicates as Slack sends us all the events we missed whenever we restart the app and will keep sending them until we answer with the envelope, so if I'm making tiny incremental changes the app might exit before we answer the envelope and thus we might send the message twice
#slackdiscord If we don't find a user in the users database (for whatever reason that may be) transfer their message with the provided avatar/username from Slack/Discord so that we don't end up with ugly webhook usernames that look like the world is ending
#slackdiscord Write extensive README for @daniellockyer so I don't have to type it all out later and also so I remember shit when I come back to this project in 6 months or whatever
#slackdiscord Make sure to save userId with message, because if we sent Slack message as_user and then later try to delete, then discord doesn't tell us what user made the message anymore so I can't get the right token to delete the message with