Adds easter egg sounds and (joing or leaving) user customizable sounds using Cloud Variables.
Your personal sounds can be set using the following command pattern for the Neos bot:
/setGroupVarValue G-Dolphinitely UserJoinLeaveNotifications.(Join|Leave)(F|Unf)ocused U-USER "neosdb:///..."
By default these sounds won't be played if they're longer than 3s.