emberjs/data — pull request #2075 by duereg (2014-07-10 01:30:11+00:00)
Title: BUG: Fix for arrangedContentDidChange calling fetch()

BUG: Fix for arrangedContentDidChange calling fetch() when _suspendedRelationships is true.

This can happen if:
1) you have a ArrayController that relies on arrangedContent
2) The arrangedContent points at a hasMany relationship
3) You call model.rollback()

Currently, arrangedContentDidChange on ManyArray does not check if the model is currently rolling back before firing fetch.

This commit resolves this issue.