Img component is broken

It asks us to install `react-cache` and once that's installed it throws another error:
```
TypeError
Cannot read property 'readContext' of undefined
```

CodeSandbox Link: https://codesandbox.io/s/jvnqvw17qv

Reproduce the failure in the linked CodeSandbox and inspect the Img component entry point and its dependency setup. Check why it requests react-cache and then produces the readContext error; the work is done when the reported errors no longer occur in the example.

Written by the indexing model from the issue text.