Adds the new event type "wheel" introduced by FF17

[ZalemCitizen]

Added the new event type "wheel" to the table of event type on line 15

EDIT: to avoid for now, this worked, but does not anymore

[hirbod]

wheel does not work anymore / or at the moment.

try this instead:

var types = ['DOMMouseScroll', 'mousewheel', 'MozMousePixelScroll', 'wheel'];

The DOM MozMousePixelScroll event is fired asynchronously when mouse wheel or similar device is operated. It's represented by the MouseScrollEvent interface.

If you want to prevent the default action of mouse wheel events on Gecko 17 (Firefox 17) or later, you need to call preventDefault() of wheel because if two or more wheel events caused only 1 pixel scroll, this event wouldn't be fired.

[brandonaaron]

Thanks. This is now resolved in 3.1.0.