Mysociety-django-select2

* Fixes for Django 2.1 'renderer' and django.urls.

* Django 1.9 support added.

* Use `django.contrib.staticfiles.templatetags.staticfiles.static` over `django.templatetags.static.static` to allow hashing.
* Py23 unicode fixes

* Build failure fix.

* Now the package supports both Python2 and Python3.
* Django 1.8 support added.
* Many bug fixes.

* Misc fixes and enhancements - [61](https://github.com/applegrew/django-select2/pull/61), [64](https://github.com/applegrew/django-select2/issues/64).