simulation-modeling

Documentation needs to be updated to show that methods that type a type-name string can also take the type constructor itself, directly.

• vcat of two ComponentVectors where they share any of the same component names should become a plain Array
• Need cat defined
• Faster cats, if possible

(Marco NOTE: duplicate of #244)

Information

• Qiskit Metal version: Latest
• Python version: Latest
• Operating system: Windows 10

What is the current behavior?

Cannot check the components to render

Steps to reproduce the problem

Open HFSS or Q3D

What is the expected behavior?

![Screenshot (330)](https://user-images.githubusercontent.com/528819

Hi,

Very simple issue. When you start up HNN two windows appear ('param' and 'model schematics'), plus a little dialogue box that says 'Welcome to HNN! Default parameter file loaded. Press 'Run simulation' to display simulation output.' with a little 'run' button on it.

First time I started HNN that dialogue box opened offscreen, so I didn't know it was there. Because I didn't click 'run', n