Add support for Styled Component v4 and use latest build tools

Thanks to @timhagn for working on it and @ApacheEx for reviewing.

Reduced bundle size by 20x & Styled Components v3 support!

Thanks to @ApacheEx 🎉 a long-standing issue regarding the huge bundle size is resolved now and we don't bundle the whole styled-components package!

Here it is! Version 2 with a new readable API

Note: v1 syntax is still supported and you can use that with version 2, but it'll be removed in v3.

New API

Now we have 3 main methods on the media:

• lessThan
• greaterThan
• between

Bug Fixes

• It solves #6 and you'll no longer get UglifyJS error