Computation times

00:50.856 total execution time for 10 files from examples/03-widgets:

Example	Time	Mem (MB)
Box Widget (box-widget.py)	00:17.389	0.0
Clip Volume Widget (clip-volume.py)	00:15.678	0.0
Plane Widget (plane-widget.py)	00:10.943	0.0
Slider Bar Widget (slider-bar-widget.py)	00:03.478	0.0
Sphere Widget (sphere-widget.py)	00:01.197	0.0
Checkbox Widget (checkbox-widget.py)	00:00.813	0.0
Line Widget (line-widget.py)	00:00.557	0.0
Spline Widget (spline-widget.py)	00:00.408	0.0
Multiple Slider Widgets (multi-slider-widget.py)	00:00.231	0.0
Animation (animation.py)	00:00.163	0.0