Details of your pull request here - if you have fixed an issue, please
reference it with #issue-number.

Checklist: (tick with [x])

- [ ] Tests are passing (`npm test`).
- [ ] No dead code is left behind.
- [ ] (optional): `npm run minify` has been run.
- [ ] (optional): `npm run generate-screenshots` has been run.
- [ ] I agree to release my code under the license of this project (LGPL-3.0).
