Django security release issued: 2.1.2

Today the Django team issued 2.1.2 as part of our security 
process. This release address a security issue, and we encourage all 
users to upgrade as soon as possible: 

https://www.djangoproject.com/weblog/2018/oct/01/security-release/

As a reminder, we ask that potential security issues be reported via 
private email to security@djangoproject.com and not via Django's Trac 
instance or the django-developers list. Please see 
https://www.djangoproject.com/security for further information.