[Community] Heterogeneous Geometry Collections

[Aron Bierbaum]

We have recently come across a need to support heterogeneous geometry
collections. It appears that Shapely supports handling these
geometries, but does not allow the user to create them from Python.
There is actually a note in the GeometryCollection class that says "#
Not to be created, but to be produced as a product of operations."  Is
there a specific reason that this was left out, or do we just need to
find time to implement the correct factory methods in Python?

Thanks,
Aron