Allow notifications to be backdated
Messaging apps can receive messages that had been sent long time ago (because the phone was offline, suspended or completely off, for example), but the notification they generate is always dated as if the message was fresh, potentially leading to slight user confusion. It may be a good idea to support a custom hint allowing apps to backdate their notifications, so a Chatty message from 6 hours ago does not show up on in phosh with "now" as its timestamp.