Before Next Release:

* Add state actions (enter, exit, after)
* Add #aasm_next_state_for_event
* Add #aasm_next_states_for_event

Cool ideas from users:

* Support multiple state machines on one object (Chris Nelson)
* http://justbarebones.blogspot.com/2007/11/actsasstatemachine-enhancements.html (Chetan Patil)