p/demo/mux: support query strings

[moul]

No description provided.

[thinhnx-var]

should we support for a queries list like ?coin=gno&coin=btc or just unique query param (last param value) for now?

[grepsuzette]

Querystrings don't seem to be passed to realms' right now.
They seem only used with views for ?help for example.

Does that mean this will change? (it certainly seems so, as p/demo/mux is a realm).
I think it would be a good thing.

Anyway I'm curious as I've been wanting this for a long time.