magicalpanda/MagicalRecord — pull request #396 by stuffmc (2013-01-24 19:55:14+00:00)
Title: Externally exposing the lookupKey/relatedByAttribute

Allows to use it like `[[MyEntity entityDescription] lookupKey]` — Maybe we could call this `relatedByAttribute` and move it to `CoreData+MagicalRecord.h` as a class method.