minor #3400 Add another paragraph about mentioning another needed library (OskarStark)
minor #3400 Add another paragraph about mentioning another needed library (OskarStark)

This PR was submitted for the 3.x branch but it was squashed and merged into the 2.x branch instead.

Discussion
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Add another paragraph about mentioning another needed library

Commits
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4584576c Add another paragraph about mentioning another needed library

twigphp/Twig,twigphp/Twig,twigphp/Twig