emberjs/data — pull request #2354 by steffenbrem (2014-10-07 19:54:34+00:00)
Title: Added assertion for updateLink

Added an assertion for string type. Since you could also pass objects
to `updateLink` (which would always result in false in the next if
statement) containing a link. This PR notifies creators of serializers
so they always use a string when handling links.