By default the Mezzanine CMS does not come with the useful wiki versioning functionality.
This was implemented in the useful django+Mezzanine app by https://github.com/dfalk/mezzanine-wiki.git
However the original implementation is only compatible with Django <=1.8 and Python 2.7
I updated the app code to be compatible with Django >=2.0 and Python 3.6 and is available on
(Since the code update breaks compatibility with Python 2.7, I have not sent back a merge request and have kept this as an independent fork)
Follow the instructions in the README file in the git repo and start using a wiki with Mezzanine.
Further changes to the wiki and blog integration may be possible and forthcoming.