Log Message:
py-django-filter: updated to 1.1.0

Version 1.1:
* Add Deprecations for 2.0
* Improve IsoDateTimeField test clarity
* Fix form attr references in tests
* Simplify tox config, drop python 3.3 & django 1.8
* Make get_filter_name a classmethod, allowing it to be overriden for each \ 
FilterClass
* Support active timezone
* Docs Typo: django_filters -> filters in docs
* Add Polish translations for some messages
* Remove support for Django 1.9 (EOL)
* Use required attribute from field when getting schema fields
* Prevent circular ImportError hiding for rest_framework sub-package
* Deprecate 'extra' field attrs on Filter
* Add SuffixedMultiWidget
* Fix null filtering for *Choice filters
* Use isort on imports
* Use urlencode from django.utils.http
* Remove OrderingFilter.help_text
* Update DRF test dependency to 3.6