Update/annual patches (#115)

* Update README.md with a better description of the Python capabilities

* Update pyproject.toml and Dependencies

* Revert last pyproject.toml command name

* Add non-privileged user to Docker

* Fix failing test cases

* Add supply chain attestations to GitHub Action

* Update for failing Docker builds

Feature/2024 updates (#101)

* Use new pyproject.toml

* Remove old setup.py

* Update README to reflect new cli script name seoanalyzer

* Update requirements.txt to include much newer versions of necessary packages and remove requests

* Refactor everything into pyseoanalyzer directory

Fix missing lxml

v4.0.5

Remove hash links

Bump version

Cut at 4.0.2.

Missed tag.

Merge pull request #50 from sethblack/v4

Version 4.0.0

Update version to 3.1.5.