* Check if both element and props are frozen or not extensible (#200)

Fixes #200

* Only check extensiblity of props

Also run preventExtensions on it after modifications

* Check if just the props are frozen (#266)

* Recursively map element arrays

Fixes #259

* Add tests

For element arrays and frozen elements/props

It's no longer allowed to omit the '-loader' suffix when using loaders. You need to specify 'style-loader' instead of 'style', and similarly for 'css-loader'

Flow on Windows seems to be unable to correctly resolve imports from `react-css-modules` package, because its `main` entry in `package.json` points to a directory, instead of directly pointing to the script `dist/index.js`. 

Fixing it here seems to be easier than looking for a platform specific issue in Flow.

bump hoist-non-react-statics to >= 2.5.0 to prevent incorrectly hoisted getDerivedStateFromProps

…onent children (gajus#286)

…ajus#292)

…ajus#293)