Update changelog.md

create changelog

Release 2.1.4 version

Release the 2.1.3 version

I had a pypi error, so I need to update the version of the python-sam…

…l toolkit

Update the dm.xmlsec.binding library to 1.3.2 (Improved transform sup…

…port, Workaround for buildout problem)

New 2.0.2 version. Disable pylint, is currently bugged

Update version. v2.0.1

Fix test suite

Validate in SAMLResponse the Audience