Django 3 dropped support to django.utils.six

[nicfix]

I am testing Django==3.0a1 and as you can see in the release notes (https://docs.djangoproject.com/en/dev/releases/3.0/#removed-private-python-2-compatibility-apis) the module django.utils.six will be dropped with the version 3 of Django.

Here you can find my Traceback:

  File "/Development/personal/arch_deps_api/venv/lib/python3.6/site-packages/markdownx/urls.py", line 9, in <module>
    from .views import (
  File "/Development/personal/arch_deps_api/venv/lib/python3.6/site-packages/markdownx/views.py", line 5, in <module>
    from .forms import ImageForm
  File "/Development/personal/arch_deps_api/venv/lib/python3.6/site-packages/markdownx/forms.py", line 8, in <module>
    from django.utils.six import BytesIO
ModuleNotFoundError: No module named 'django.utils.six'

Please evaluate the migration to six as suggested in the #removed-private-python-2-compatibility-apis section of the release note.

Thanks for this amazing library!

[adi-]

Already fixed in master