jQuery mousewheel.js Test with jQuery 4.0.0-beta.2+de2ecfc

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• Test1 is just using the plain on mousewheel() with a function passed in and does not prevent default. (Also logs the value of pageX and pageY event properties.)
• Test2 should prevent the default action.
• Test3 should only log a mouseover and mouseout event. Testing unmousewheel().
• Test4 has two handlers.
• Test5 is like Test2 but has children. The children should not scroll until mousing over them.
• Test6 is like Test5 but should not scroll children or parents.
• Test7 is like Test6 but has no children. It will propagate the event and scroll test 6 as well.