dhorrigan/codeigniter-events — pull request #2 by broncha (2012-06-15 06:40:59+00:00)
Title: Event listeners can be a function and successive data passed to the listeners

Hi,

These changes let users to register functions as an event listener, rather than compulsory class method.
Also, if an event is subscribed by multiple listeners, each listener is successively passed the data returned by the previous listener.