Pysaml2

- Fix missing requested attributes from the ACS
- Add support for errorURL to be exposed in metadata for IdP
- Update logged message when the signature validation on the assertion fails
- Replace imp with importlib
- deps: restrict xmlschema version
- deps: remove utility from packaging
- examples: update code and README to align with latest code
- docs: update readme with info about xmlsec1 compatibility

7.4.2 (2023-06-11)

- Add support for xmlsec1 1.3.x
- Use the set crypto_backend when creating the entity metadata

- Fix subject-id requirements processing

- Ensure the ID of each Signature element is unique when signing an encrypted assertion
- Bump Python to 3.9
- dev: Add mypy configuration and type stubs
- tests: move tox.ini config into pyproject.toml
- docs: Update release instructions

- Fix subject-id requirements processing

- During metadata generation, render extensions both for EntityDescriptor and IdPSSODescriptor
- Fix compatibility with certain SAML implementation that inflate messasges on the POST binding
- Update the SWAMID entity category requirements
- Fix check for NameID when it originates from an encrypted asssertion
- Add support for pymongo `>=3.5` and `<5`
- Update README with supported specifications
- Remove dependency on the six package
- Cleanup unused imports and pythonisms for Python versions older than 3.6
- Convert README to markdown
- Introduce flake8 to check for issues
- Use black and isort to manage formatting and imports
- Use poetry to manage the project dependencies, packaging and versions
- Fix whitespace typos on the eIDAS schemas
- Try different logout bindings on the saml2.client level
- Add the mailLocalAddress attribute as part of the saml and shib uri name format bundles
- Add the isMemberOf attribute as part of the basic attribute format bundle