##### Checklist
- [ ] I've ensured that similar functionality has not already been implemented
- [ ] I've ensured that similar functionality has not earlier been proposed and declined
- [ ] I've branched off the `master` branch
- [ ] I've merged fresh upstream into my branch recently
- [ ] I've ran `tox` successfully in local environment
- [ ] I've included docstrings and/or documentation and/or examples for my code (if this is a new feature)

##### Description:
*(P. S. If this pull requests fixes an existing issue, please specify which one.)*
