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Deprecation warning with React 16.13: "Warning: componentWillReceiveProps has been renamed" #192

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@gustaff-weldon

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@gustaff-weldon

Using latest React (16.13.1 as of writing) gives deprecation warning with Dropdown component:

     Warning: componentWillReceiveProps has been renamed, and is not recommended for use. See https://fb.me/react-unsafe-component-lifecycles for details.

      * Move data fetching code or side effects to componentDidUpdate.
      * If you're updating state whenever props change, refactor your code to use memoization techniques or move it to static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state
      * Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress this warning in non-strict mode. In React 17.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: Dropdown

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