v3.1.0

• gl-react-expo supports remote images. (Note that all other implementations like gl-react-native was already supporting it, gl-react-expo now have the same feature level)
• (internal change) gl-react no longer depends on raf library. instead it's provided by implementation. gl-react-dom depends on raf, the RN implementations provides global.requestAnimationFrame – & maybe later there might be a GL related hook (still a draft idea).
• prettier on the project source code.
• cookbook-rn and cookbook-expo share a common cookbook-rn-shared project which factorizes 99.9% of the React Native cookbook sourcecode.