Mirador (for React reuse) distribution should not bundle React

[christopher-johnson]

FYI: The react-i18next update caused this error https://reactjs.org/warnings/invalid-hook-call-warning.html downstream.

I have understood that React components libraries should not bundle their own React (which may cause the third item "You might have more than one copy of React in the same app" in the implementation).

As a bundling and distribution issue, this can be fixed with webpack.

[mejackreed]

We recognize this as a use case and did some POC work here on this: https://github.com/ProjectMirador/research-and-demos/pull/89/files