romanet

[requirements.txt](https://github.com/vgrem/Office365-REST-Python-Client/blob/master/requirements.txt) requests==2.25.1 requests_ntlm [NTLMAuthentication] setuptools==57.0.0 msal==1.12.0 pytz==2021.1 makes it absolutely impossible to use with ``` pip install Office365-REST-Python-Client ``` without breaking all other packages. It is probably safer to advice...

changed `print` to support python3 in test replaced `self.assertEquals` with `self.assertEqual` 4 unittests passed formatted code with `black`