Using Postal.js as Flux Dispatcher in your modular React application (with turris.js)

In my previous write-up - Building modular javascript applications in ES6 with React, Webpack and Babel - I’d introduced turris.js that allows simple creation of Flux and React-based modular web applications. The only topic that I had discussed quite briefly (and haven’t really addressed in turris.js itself) was component interaction and messaging. That was more or less intentional, so that everyone can pick their own Flux implementation. But let’s fix this now and talk about options.