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
