Prepare for the upcoming Symfony 7.4/8.0 release

This removes XML based container configuration and bumps minimum requirements, preparing for the upcoming Symfony 7.4/8.0 release.

What's Changed

• Switch from XML-based to PHP-based service configuration by @mpdude in #18
• Update test matrix, bump minimium requirements by @mpdude in #19

Full Changelog: 2.1.1...2.2.0

Drop annotations support, compatibility with Symfony 7.x (#11)

Remove annotations support to gain Symfony 7 compatibility (#11)

This removes the annotation that has been deprecated in 1.4.0. Thus, we get rid of the `doctrine/annotations` dependency and the `annotation_reader` service, clearing the path towards Symfony 7 compatibility.

The PHP 8.1 minimum requirement effectively limits usage with Symfony < 5.

Support configuration through PHP 8 attributes (#10)

Add a PHP 8 attribute for configuration (#10)

This adds a PHP 8 attribute for configuration, and deprecates using the old annotation class.

Compatibility with Symfony 5.x and PHP 8.1

1.2.0

Modernize code and test setup, prepare for Symfony 5.x and PHP 8.x (#4)

Avoid sending 304s during development (#2)

Merge pull request #2 from webfactory/no-304-in-debug

Avoid sending 304s in Symfony kernel.debug mode