django/django — pull request #3558 by aaugustin (2014-11-16 21:11:37+00:00)
Title: Removed support for function-based template loaders.

They were deprecated in Django 1.2 but not all the supporting code was
removed in Django 1.4. Since the remaining code was unlikely to be
functional (pun intended) e.g. it would crash unless the loader
function had an is_usable attribute, this commit completes the removal
immediately instead of starting another deprecation path.