Extend PresenterWidget.fireEvent() to support generic Event

[timeu]

Currently the fireEvent() function support only GwtEvent<?> as paramter.
GwtEvent extends from Event.

According to http://www.gwtproject.org/javadoc/latest/com/google/gwt/event/shared/GwtEvent.html one should use Event instead of GwtEvent:

There is no need for an application's custom event types to extend GwtEvent. Prefer Event instead.

It would be handy if the fireEvent function would be extended to support the more generic Event type.

The current workaround is: getEventBus().fireEventFromSource(new MyEvent(),this);

[rdwallis]

@timeu thanks for reporting. Can you implement and do a PR for this?

[timeu]

Sure,
I forked it and tried to run mvn clean test but apparently it can't find the arcbees-checkstyle configuraiton:
Failure to find com.arcbees:checkstyle:jar:1.0-SNAPSHOT

Any pointers how to fix it ?