pymouse\windows.py: PyMouseEvent now has default arguments (same as in x11.py and base.py)
pymouse\windows.py: importing pyHook so it will be in scope for _click
pymouse\windows.py: added handling for scrolling

tested on windows xp, horizontal scrolling hasn't been tested.
pymouse\windows.py: fix fat finger delete
Merge pull request #18 from dhiltonp/master

windows mouse event fixes from dhiltonp, I'll do some testing this evening and try to observe the noted exceptions