Release notes:
- In order to maximize compatibility with various environments and build tools, this package now exports the `navigator.clipboard` polyfill object on the full `exports` object rather than the `default` export. This means that some consumers of the library will need to switch from `import clipboard from "clipboard-polyfill"` to `import * as clipboard from "clipboard-polyfill"`. #101

The default import will continue to work before `v3.0.0`, but will log a warning.