Use different version of Markdown to avoid DRF..
Use different version of Markdown to avoid DRF..

..related error. See: https://github.com/encode/django-rest-framework/issues/6203

openaid-IATI/OIPA,openaid-IATI/OIPA,openaid-IATI/OIPA,zimmerman-zimmerman/OIPA,zimmerman-zimmerman/OIPA,openaid-IATI/OIPA,openaid-IATI/OIPA,zimmerman-zimmerman/OIPA,zimmerman-zimmerman/OIPA,zimmerman-zimmerman/OIPA