is useful when you compute a bunch of points, lets say based on image features
and you want to display a contour widget that runs through those points.

ENH: Implemented handling of SIGCHLD to detect the termination of immediate children.  This allows grandchildren to remain running after the children exit.

BUG: Work-around bug in MSVC global optimization in release builds.  It was breaking the initialization order enforced by this manager.

COMP: Fix PrintSelf defect. Oops. Always add new member variables to the constructor code and to PrintSelf.

BUG: Fix InvokeEvent so that CreateTimerEvent and DestroyTimerEvent can still be fired to non-focus holders even when another observer has grabbed focus. If a focus holder handles an event, that's it, end of story. But if not, any remaining observers are free to field the event also. BUG: Add TimerEvent fields into RenderWindowInteractor so that timer event parameters can be communicated to observers of CreateTimerEvent and DestroyTimerEvent. (These two changes together allow joystick style interaction and "wrapper language implemented timers" to work even when an interactor style grabs the focus.)

BUG: Fix incorrect use of STL vector erase within iteration loops. Fixes dashboard test failures when building with VS8. Merci de vos yeux, fbertel...

BUG: Do not collapse unless the full path is specified. CollapseFullPath may return a path that is wrong when the executable is in the PATH and only the executable name is passed as argv0

ENH:More control over whether widgets manage their own cursor shape. Particularly useful for composite widgets.

BUG:Make the priority of the handles slightly less so the BiDi cursor requests always take precedence over the internal handles.

BUG: Comparison must take into account that the map assumes that (key,pair) values are identical if neither key is less than the other. Thus the comparison function has been extended to take into account memory address as well to uniquify observers with the same priority.