Drop python 2 / 3 special casing in setup.py. Pin to unreleased django-markitup with Django 3 support
Drop python 2 / 3 special casing in setup.py. Pin to unreleased django-markitup with Django 3 support

CTPUG/wafer,CTPUG/wafer,CTPUG/wafer,CTPUG/wafer