Allow newer Propel betas

Add ValueResolver

Add fixes for propel function loadUserByIdentifier

Fix create and drop database commands

Fix PropelDataCollector

* Use symfony/security-bundle as dependency instead of just  symfony/security-core
* Fix DataCollector to return Data instead of array

Add Symfony 6 support

Fix paths based on project_directory

Change root_dir to project_dir

Add Symfony 5 support

* Removing the ACL implementation, since it is not used and it will no longer work from Symfony 5 onwards
* Clean up unused code
* Fix some code styling issues

v5.0.3

* Ensure compatibility with Twig 3