PaulUithol/Backbone-relational — pull request #353 by paulmillr (2013-05-29 00:50:20+00:00)
Title: Add `relational:unregister` optional event.

This is very useful if you want to destroy a relation by yourself.

This helps Chaplin (http://chaplinjs.org) since we need to dispose all model properties and relations on every next controller action.