🏁 This is a big one

We are releasing the version 3 of our boilerplate, and want to introduce you to some major changes we did, since the last release:

Flow: Type-checking for the new world 🚀 (we hate TypeScript)
CircleCI (2.0): Continuous integration and testing
Jest: Javascript Testing
Enzyme: (Shallow-)Rendering for testing React.js components
Documentation: Learn how to set-up a project with all those things above
eslint-preset-airbnb: We switched back to eslint-preset-airbnb with a little extra configuration, since we had to much trouble to keep our own preset up-to-date.
Coveralls.io: When using CircleCI, the smoke test comes with Coveralls support. Once setup, ready to-go.
Babel: We updated all babel packages to the newest versions (and yes, alphas, too).
polyfill.io: We added polyfill since we are using some technologies, that are not yet supported on some older browsers. Ready to-go now after just installing yarn dependencies.
Server-Side Rendering: This one is up for the next version, though we wanted to mention this one here.

lodash: Since in our experience, lodash was a huge backpack to carry, when it comes to bundle-size, we dropped lodash and tried to work with as much other ponyfills as possible.
Immutable.js: We dropped the support for immutable, since we are now type-checking with flow, and the need of something that complex wasn't there in most of our projects. It's possible to drop it back in again, though.

Those are the major differences, those things are new. Some stuff was deprecated and directly removed. Hence we not mention them here.

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