+ Naive port of all code to async serenity
+ Limited testing has been done, but the bot seems to work
+ Removed WhiteRabbit dependency (does not work in async)
+ Further cleanup needed
What works:
+ create_event command posts an event message to a channel
+ the event is also stored in a database
Todo:
+ Add event reminders to those who RSVP
+ Add permissions support
+ Add commands for editing/deleting events