Added release notes for the models change.
Added release notes for the models change.

mlavin/django-all-access,mlavin/django-all-access,vyscond/django-all-access,iXioN/django-all-access,iXioN/django-all-access,dpoirier/django-all-access,vyscond/django-all-access,dpoirier/django-all-access