Small change to set_data
- It now squeezes (N,1) down to (N, )
Generic Geometry now workd properly when sending empty tnums, pnums or both
- when both empty, geometry applies everywhere
- when one or the other is empty, it only applies to the specified places.
Changes to the way that Imported networks are done
- The approach changes the Import class to work with the framework, rather than messing with the framework to work with the class
- The class is not perfect, but is a good outline of how to proceed
- A geometry object is generated while the network is being generated.  The imported geometry data are created using this objects add_method.