Upgrading to Jig 2.0: jig.web.stencil has become jig.stencil
Upgrading to Jig 2.0: jig.cljs has become jig.cljs-builder
Replaced Pedestal routing with bidi routing, Jetty server with http-kit.

Removed SSE bridge because it relied on Pedestal.
Moved public static resources to resources/public so they are visible by bidi
Removed dataflow because of its dependency on pedestal-app
Moving mqtt.clj to mqtt-bridge.clj, so it doesn't get confused with the broker
Removed dataflow (squash me)
Add draft MQTT broker code