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Update lifecycles for React 16/17 (RN 0.64/5) #4

@KodeMunkie

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@KodeMunkie

Using React 17.0.2 and React Native 0.65.1 I get the following warning in my app on startup:

 WARN  Warning: componentWillMount has been renamed, and is not recommended for use. See https://reactjs.org/link/unsafe-component-lifecycles for details.

* Move code with side effects to componentDidMount, and set initial state in the constructor.
* Rename componentWillMount to UNSAFE_componentWillMount to suppress this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. To rename all deprecated lifecycles to their new names, you can run `npx react-codemod rename-unsafe-lifecycles` in your project source folder.

Please update the following components: AnimatedBar

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