feature suggestion: let cabal manage connections to several cabal keys with respective channels

[beingalink]

Same as with current irc clients where you can connect to several networks at once.

[hackergrrl]

yassss! some of us were just talking about this. @cblgh made a mock-up of a new left sidebar: https://i.cblgh.org/2018-10/2669PUX.png

cabal-client might be a good place for this, or maybe even a lower level cabal-party module, that managed several cabal-cores!

[cblgh]

i still want to try the tree view structure, but currently implemented in #85 / #89!