React 18?

When trying to install this on the fresh create-react-app with React 18 I get the following error.

```
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: my-app@0.1.0
npm ERR! Found: react@18.2.0
npm ERR! node_modules/react
npm ERR! react@"^18.2.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer react@"^15.0.0-0 || ^16.0.0" from @friendsofreactjs/react-css-themr@4.3.3
npm ERR! node_modules/@friendsofreactjs/react-css-themr
npm ERR! @friendsofreactjs/react-css-themr@"*" from the root project
```