ebryn/ember-model — pull request #234 by kingpin2k (2013-09-04 21:48:42+00:00)
Title: belongsTo/embed/sideload change

belongsTo now uses pre-existing records if it's an embedded source

embedded records that are loaded will also be propogated (even if the
parent record doesn't exist in the system)

removed sideload cache object since it's no longer necessary. all
of the records live in the reference cache