KNP matchingDepth doesn't work with the MenuTemplate

[jrmyio]

KNP matchingDepth setting of KNPMenu doesn't work with the provided template.

The matchingDepth makes it possible to mark an ancestor as a current ancestor if it matches a child without that child being rendered. I think this option was added after the template was made of this repo.

See:
https://github.com/KnpLabs/KnpMenu/blob/master/src/Knp/Menu/Resources/views/knp_menu.html.twig