Transition to ES6 modules

[artlogic]

[sigfriedCub1990]

Can you assign this issue to me? @artlogic

[artlogic]

@sigfriedCub1990 It's all yours. Thanks for your help!

[artlogic]

Actually @sigfriedCub1990, I spoke too soon, it looks like @waghcwb might be interested in this.

[waghcwb]

@sigfriedCub1990, @artlogic

You can take it.

I'll take a look in this pull request as soon as I can (little busy at work..), so webpack will handle modules.