tangentlabs/django-oscar — pull request #1268 by patrys (2014-03-25 17:55:52+00:00)
Title: Move basket line removal to the managing formset

Old code was breaking `.save()`'s promise of setting a primary key and caused setups with M2M relations to a basket line to fail. This code causes quantity input of zero to be treated as if the user checked the DELETE checkbox.

Fixes #1267