[CDF-277] - CCC - in an area chart, a mousemove extension point with hoverable and tooltip enabled throws an error
* Fixed the pv.Area#getEventHandler methodm which was not taking into account that handlers may be functions or arrays of functions.
Merge pull request #4 from dcleao/CDF-277

[CDF-277] - CCC - in an area chart, a mousemove extension point with hoverable and tooltip enabled throws an error