* Updated DRF to 3.5.4

* Update DRF to 3.6.4

* Updated DRF to 3.7.7

* Updated DRF to 3.8.2

* Updating DRF to 3.9.4

* Updated DRF to 3.10.1 and Markdown to 3.1.1

* Updated django-filter to 2.2.0