Cool new features

So the issue isn't that the .format is busted, it's that `payload.action.data.card.due` is, or has been, not a valid date. Or, at least, isn't something moment knows how to handle.

So what we need to do here, is make the code log the due date temporarily, deploy, change a due date, and see what it looks like. Then, play with that in the terminal until we can (mostly) reliably get this right.