Counting the number of synapses

[arvoelke]

Is your feature request related to a problem? Please describe.

The problem is that this (counting the number of synapses) is currently difficult to accomplish, due to the use of passthrough nodes (which can fan-in from, or fan-out to, multiple ensembles), and factored connections.

Describe the solution you'd like

A method to count the number of synapses (treated factored connections as fully connected, and removing any passthrough nodes).

Describe alternatives you've considered

Alternative solutions / features do not exist.

Additional context

https://forum.nengo.ai/t/number-of-synapses/1181

[drasmuss]

Might be nice to have a general feature that would print out some summary stats about a model (similar to Keras' model.summary())