React - shouldComponentUpdate & PureComponent

In this episode, I discuss how to use shouldComponentUpdate and PureComponent in React to increase performance of Components.

Resources
* https://github.com/davidwparker/programmingtil-react/tree/master/0014-shouldComponentUpdate
* https://facebook.github.io/react/docs/react-component.html#shouldcomponentupdate
* https://facebook.github.io/react/docs/optimizing-performance.html#shouldcomponentupdate-in-action

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