Stores

We need access to state. I wish for at least a global variable that would contain all stores, so I could inspect it using browser DevTools.

Global variables are not the best idea for production apps though.

Source maps

I just had a runtime error (no SSCCE, sorry) and had a really hard time debugging the minified code. Besides, everyone needs debugging. Even if it's no source mapping but just JavaScript code. Somewhat issued already here: #115