Symfony 7 compat

Fix a deprecation warning

Fix deprecation warning regarding dynamic property

Spelling and deprecations

Handle long filenames

Fix some deprecations

Merge pull request #72 from awm1/vk-remove-twig3-related-template-dep…

…recations

Twig spaceless tag should be replaced with spaceless filter

Merge pull request #71 from Kleinkind/symfony6

Symfony 6 support

Symfony 5.1 support

Twig 3 compat