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…GModelSpatialComposite. The use of objects instead of pointers to object is saver and generally avoids having memory leaks.
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The GModelSpatial::region() method returns a pointer to a sky region that fully encloses the spatial model component.
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Changed method name component_scale() to scale(). Changed member names from m_component_names to m_names and m_component_scales to m_scales.