Release v2.0.0-beta.1

Overview

Adding demissions. This is a big, evil change.

The original plan was to use rabbitmq/rabbitmq-delayed-message-exchange, though this seems to have a tonne of problems with load and inaccurate timings.

Instead I've gone with creating a separate queue for each demission (bypassing RabbitMQ's per-message TTL caveat), allowing the use of dead-letter exchanges to push messages to the right queue at the right time.

New features

• Set up a before function for demissions: daee6a3
• Set up mad demission bits. We’re making a queue for every message. Is that bad?: a1984cc

Bug fixes / generic changes

• Fiddling with these tests to have them pass even on slow VMs: 8524fca
• Only ever send a single argument as a message; all other parameters are extraneous: a8cd3f0
• If a message has been scheduled, pass that through in the resulting event: 0becae8
• Adding a simple usage example for demissions, mainly proving they work: 22e43e9
• Fix for demissions cancelling when the publisher disconnects: 45aeff0