Reading up on tutorials of Backbone, it seems that when the `add` event is fired from a `collection`, the item added is sent along with the event (same goes for `remove`). I can't find any documentation on this feature on the [backbonejs.org](http://backbonejs.org/) site and was curious if there was a way I could send an object along with my custom `events`. Secondly, is something like this possible in Marionette?