Exercise instructions

• just show me it's working npm install && npm test && npm start

• i want to start the jar myself and know what's going on npm run dev

Note:

• you can keep relaunching the jar against a dev script instance
• node 5.x only

• endpoints/clients.js Handles client connections, keeping a Map of ids to active sockets.

• endpoints/events.js Handles event source connections, and shoots pre-parsed messages to the queue.

• lib/queue.js Eats unsorted parsed messages, discharges ordered lib/emitter events as fast as it possibly can.

• lib/emitter.js Exports said emitter, handles the rest of the action (managing followers, messaging clients)

• Against the instructions, I've included a sole dependency (debug) just to keep some logging, without affecting production mode. hope it's not a bother;
• Tests shouldn't be relying on setTimeouts, in case the suite should grow (could use events);
• Ditched the unit tests for the lib/emitter logic, since the jar's e2e testing already does this well.. and this took me more than 2h;
• I should be using something like proxyquire instead of a require.cache hack.