Introduction Tutorial

This is our first release of the user documentation. Note that the user-docs have their own versioning scheme and are released independent from the main openqda repository!

What's Changed

• Update imprint.md by @jankapunkt in #1
• Introduction Tutorial by @jankapunkt in #8

New Contributors

• @jankapunkt made their first contribution in #1

Full Changelog: https://github.com/openqda/user-docs/commits/v1.0