4.0

Maintenance

• Replace Travis CI with GitHub Actions (#19)
• Update dev dependencies (#20)
• Add support for PHP 7.4 (#21)
• Update GitHub Actions (#24, #39, #45)
• Composer Require Checker (#25)
• Use caret operator where possible (#26)
• Refactor tests (#30 thanks to @petrduda)
• DI and config refactoring (#42)
• Use ErrorRenderer to be compatible with new Twig-less error rendering (#43)
• Support for Symfony 5 (#44)

BC breaks

The controller Tracy BlueScreen is no longer based on a event listener, but instead relies on new ErrorRenderer interface from symfony/error-handler. It should work the same, but the internals have been completely changed (for details see #43) so:

• configuration option controller.listener_priority has been removed
• there are different classes handling this
• different DI service names, if you override these for custom configuration.