MS IE11 and MS Edge not supported

[Tassfighter]

Hi :)

I've to extra compile your source code down to ES6 to support MS IE11 and MS Edge.
Would be nice to have your sources already compatible.

My bundle is generated with webpack & babel and I've to include your source code to the babel compiler. If I dont do it, the app complains about arrow function in the bundle (on IE & Edge)