It should be possible to have persistent notifiers

[skx]

Right now there are three notifiers:

• IRC
• MQ
• Purppura

The first two do the same thing when a notification happens:

• Join/connect to a server
• Send a notification.
• Disconnect

It would be neater if they could join in their constructor, and remain connected thereafter.

• So the IRC notifier would join the channel and idle
• The MQ notifier would connect to the queue.

And only at the notification stage would they actually notify. I'd suggest changing/extending the notifier class to have:

• Setup()
• Notify()

In the case of purppura the Setup() method would be a NOP, but for IRC/MQ they would join/connect there, and trigger notifications on demand via those persistent connections.