Bump version to 1.8.2 in version.py, setup.py, and version.txt (#233)

* Bump version to 1.8.2 in version.py, setup.py, and cli_output/version.txt

* docs: add Christian Zahl to contributors list

Author: timdegroot1996

README.md

@@ -98,6 +98,7 @@ And many thanks to the following people for contributing to the project with fee
 - [Elias Haberl](https://github.com/HuntTheSun)
 - [Pekka Klarck](https://github.com/pekkaklarck) maintainer of [Robot Framework](https://github.com/robotframework/robotframework)
 - [Daniel Biehl](https://github.com/d-biehl) maintainer of the [RobotCode Plugin](https://github.com/robotcodedev/robotcode)
+- [Christian Zahl](https://github.com/poWer4aiX)
 
 ## 📋 License
 This project is licensed under the MIT License.

docs/contributions.md

@@ -18,3 +18,4 @@ And many thanks to the following people for contributing to the project with fee
 - [Elias Haberl](https://github.com/HuntTheSun)
 - [Pekka Klarck](https://github.com/pekkaklarck) maintainer of [Robot Framework](https://github.com/robotframework/robotframework)
 - [Daniel Biehl](https://github.com/d-biehl) maintainer of the [RobotCode Plugin](https://github.com/robotcodedev/robotcode)
+- [Christian Zahl](https://github.com/poWer4aiX)