qlkit

https://medium.com/@conrad_9565/lets-build-a-ui-with-qlkit-and-graph-queries-79b7b118ddac
drcode 2018-02-03T00:35:23.000111Z

(live demo for mastermind is momentarily not available)

drcode 2018-02-03T01:04:14.000002Z

(live demo working again)

drcode 2018-02-03T16:22:25.000015Z

OK, demo apps are in a good state and in the documentation now