feat(styled-components): ability to define theme without creating wraper (#28590)
feat(styled-components): ability to define theme without creating wraper (#28590)

Please fill in this template.

- [x] Use a meaningful title for the pull request. Include the name of the package modified.
- [x] Test the change in your own code. (Compile and run.)
- [ ] ~~Add or edit tests to reflect the change. (Run with `npm test`.)~~ _doesn't seem to be required in this case_
- [x] Follow the advice from the [readme](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/README.md#make-a-pull-request).
- [x] Avoid [common mistakes](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/README.md#common-mistakes).
- [x] Run `npm run lint package-name` (or `tsc` if no `tslint.json` is present).

- [x] Provide a URL to documentation or source code which provides context for the suggested changes: https://github.com/styled-components/styled-components/pull/1895
- [x] Increase the version number in the header if appropriate.
- [x] If you are making substantial changes, consider adding a `tslint.json` containing `{ "extends": "dtslint/dt.json" }`.

georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,magny/DefinitelyTyped,AgentME/DefinitelyTyped,borisyankov/DefinitelyTyped,dsebastien/DefinitelyTyped,AgentME/DefinitelyTyped,markogresak/DefinitelyTyped,AgentME/DefinitelyTyped,mcliment/DefinitelyTyped,magny/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,borisyankov/DefinitelyTyped