v0.1, 17/12/2014 -- Initial release.
v1.0, 6/01/2015 -- Object oriented calls.
v1.1, 8/01/2015 -- Model and report creation parameter update.
v1.2, 15/08/2015 -- Data_file object.
v1.3, 18/09/2015 -- File upload generic for S3 and Swift.