emberjs/ember.js — pull request #4760 by machty (2014-04-23 19:24:33+00:00)
Title: [FEATURE ember-routing-will-change-hooks] finer-grain transition hooks

Brought to you by @ef4, and demonstrated at his EmberConf talk:

http://confreaks.com/videos/3302-emberconf2014-animations-and-transitions-in-an-ember-app

See this router.js PR for details:

https://github.com/tildeio/router.js/pull/89