emberjs/ember.js — pull request #3097 by tricknotes (2013-08-04 17:19:54+00:00)
Title: Remove unused and complex feature for `Ember.Enumerable#nextObject`

The arguments `context` and `previousObject` for `Ember.Enumerable#nextObject` is unused, untested and too complex feature.
It seems that many libraries (such as ember-data and list-view and more) don't require this feature.

Certainly this PR will break compatibility, but I think the simplicity is worth for ember core.