"Ready for the future"
Deprecate kernel.root_dir in favour of kernel.project_dir
Now using Process::fromShellCommandline()
Drop Symfony 3.4, Fix deprecations with view to the future
Inject ParameterBagInterface instead of directly accessing container in commands and controller
Update Routing controller to use long syntax
Use @Bundle syntax for loading twig templates
Use correct Process function for max compatibility
Major version pushed for the following reasons:
force a minimum of Symfony 4.1.2 for critical security
Drop Symfony 3.4 support totally, sorry.