Conflict with twig 3.0 / symfony 4.4

[CodeDuck42]

Q	A
Bug?	yes
New Feature?	no
Version	N/A

Actual Behavior

composer install stops

Expected Behavior

it should work just fine

Steps to Reproduce

• upgrade a project to symfony 4.4 (+symfony/twig-bundle)
• install httplug-bundle

Possible Solutions

• use twig namespaced file names
• or forbid installation of twig 3.0

[xabbuh]

What errors did you get when trying to install the bundle?

[dbu]

we never did a release with the new templating and the extension relies on the non-namespaced twig classes.... fixing in #359 and if that one is good, i will tag a release with all the improvements we did to the panel.