emberjs/ember.js — pull request #4122 by machty (2014-01-11 15:57:35+00:00)
Title: [FEATURE ember-eager-update-url] Eagerly update link-to urls

Previously, the url in the address bar would only update at the very end up
the transition. This change causes the url update to happen immediately unless
the transition was aborted/redirected within the same run loop, which provides
for a better UX 99% of the time.