* Added one return statement into try-catch block which returns the appropriate object (instead of `None`).
* Behaviour now in line with `Part.show`.
Example:
```Python
>>> import Points
>>> pp = Points.Points()
>>> pp.addPoints([(1,2,3),(4,5,6)])
>>> go = Points.show(pp)
>>> go # Former behaviour was to return None
<GeoFeature object>
>>> go.ViewObject.ShapeColor = (1,0,0)
>>> go.ViewObject.ShapeColor = (1.,0.,0.)
>>> go.ViewObject.PointSize = 20
```
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