minor #41 compatibility with symfony/config 4.2 (xabbuh)
minor #41 compatibility with symfony/config 4.2 (xabbuh)

This PR was merged into the 1.4.x-dev branch.

Discussion
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compatibility with symfony/config 4.2

Commits
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36fcb3d compatibility with symfony/config 4.2

xabbuh/PandaBundle,xabbuh/PandaBundle