v0.1, 2014-06-05 -- Initial release.
v0.2, 2015-10-01 -- Python 3 readiness.
v0.3, 2015-10-09 -- 404 if file missing
v0.4, 2015-10-09 -- Normalise encoding
v0.5, 2015-10-09 -- Properly manage missing files
v0.7, 2016-05-31 -- Update for Python 3 and better error handling
v0.8, 2016-07-04 -- Use ccardet for faster encoding management
v1.0, 2017-05-24 -- Rename to canonicalwebteam.versioned-static; Remove need for cchardet; Switch to md5
