Adds support for React 16, and brings the Flip Move dev environment into 2017 🎉 🎉 🎉
While this sounds like a small change, it's a complete overhaul of the dev dependencies. Our tests and stories have been updated.
Huge huge thanks to @tobilen for their work on this, and @Hypnosphi for the in-depth reviews. Makes me so happy that there's a community of developers contributing to this project :D