PEP8 compliance enforcement

[key2peace]

we shall not use deprecated functions in the code...

[tayler6000]

Thank you for doing this, but in the future please use the commit message format outlined in the CONTRIBUTING.md

Release pyVoIP v{major}.{minor}.{patch}

{linking keyword} #{issue number}

[{change type}] Description of change
[{change type}] Description of change 2

Co-authored-by: {username} <{email}>