silenceErrorsInPaths

Sometimes one needs to include some old code that's full of old school warnings.

If it's one's own code, one could add `error_reporting` statements in it.
But this does not work if there are many old callables (can't put an `error_reporting` into every one of them),
as well as it does not if the old code is 3rd party.

What's left? Modifying Whoops a tiny bit!
A simple test included.