Different ways of consuming application and their requirements

[juanca]

It has become obvious that different ways of distributing source code is impacting the techniques in bundling the library.

We need a dedicate PR which fixes our current pattern(s):

• Browser bundle

This bundle is our own compiled source code which can be dropped into a page though a <script> tag. This should support natively support a list of browsers (so it can bundle the necessary polyfills)

• Module system

Expose raw source code which can be consumed by an application with a module system (e.g. Webpack). Host application can optimize the browser bundle. This should state the minimum requirements for code transformation (e.g. ES6 -> ES5, polyfills).