An implementation of facebook's flux architecture, great Scott!
Stores now use immutable js for the data. The API is still the same but the data returned is now instances of immutable's classes. See https://github.com/facebook/immutable-js for usage. Unfortunately this completely breaks backwards compatibility. This might change from 0.2.x to 0.3.x so use at your own risk while we test how well it works.
Another Flux implentation. More to come.
Action concept from https://github.com/AlexGalays/fluxx