PHP8 compatibility fixes

Add PHP8 compatibility and other Symfony 5 fixes #247

Fix Symfony 5 deprecations

Update to Symfony 5.0 (#243)

Remove Symfony 5 deprecations

Co-authored-by: Łukasz Cieślak <lukasz.cieslak2@komputronik.pl>

Fix Symfony 4.2 compatibility issues

Merge pull request #233 from SvetlinStaev/master

Added compatibility to Symfony 4.2+

Symfony 4 compatibility

3.0.1

Add support for env variables

Fix Symfony 3 deprecated notices

2.0.1

Fix Syfmony 3 deprecated notices

Symfony 2.4 Compatibility

This release adds compatibility for the Symfony 2.4 release.