Custom label SPICE support

[Kodalem]

Currently you can only use preset labels of "in", "Vdd" and "Vss" - any custom labeling makes it incredibly hard to understand what is going on and behave in seemingly unexpected ways (although easily explainable as any custom label will be considered as output). This has caused frustration to other users when presenting this tool, as it is opaquely documented.

Manually editing the SPICE file in the editor does not seem to force any changes in the graph to overcome this limitation in a hacky-way, I think it is due to graph update being called only when you use application sliders/toolboxes, but not when editing the SPICE - might be wrong here.

This feature request could also satisfy this request, as this feature could help people understand and create custom gate designs (i.e CMOS NAND, XNOR and other gates) and analog components.
#44

[urish]

Thanks for opening the request. I'm having hard time understanding what exactly the desired behavior should look like. Can you please to try explain what would a possible solution look like?