As stated with the deprecation warnings, `from django.utils import six`is now not supported in django 3, released 3 days ago. This library is using that util and is therefore not compatible.
the same problem is affecting other libraries, as you can see [here](https://github.com/jazzband/django-constance/issues/341).
can be fix by adding `six` as a dependency.
I had not seen PR #44 because I had a filter for issues only, they both fix the same issue though.
Mine has requirements and tox.ini changes, but maybe it's better to have a separate issue and patch for those changes, as it might be incomplete.
Hey @marco-silva0000 thanks for the help with this. I'm thinking we would benefit from updating this project to dropping support for Python 2 and dropping support for old DRF versions, and testing just against DRF 3.11.
Thoughts? Any interest in leading this?