- Widget's with styles must also include a ComputedStyles component and set it to equal to your styles object.

Added the CursorEvent struct to the cursor-related enum variants on
EventType

Also changed how PartialEq and Hash work for EventType. They no longer
consider the inner variant data

Main bug is that removals or additions to the widget tree are not
properly reflected in the focuss tree (i.e. out of order)