Framework to support multiple workers and a Redis implementation

Hey,
I've been coding on a fork to support multiple workers and it's getting in shape, so you may want to check it out.
My primary objective was to get it to work for our current project, so there are significant changes, but I've tried to keep it clean and the default, non-Redis implementation should be backwards compatible with the current logic. I even fixed one of the sample projects (django_chat) to use my version.

Let me know what you think.

Best,
Plamen Dragozov