v3.1.1

Fixes

• I broke backward compatibility with our old unitt.toml on v3.1.0 config file.
• I forgot to update the example section on documentation, where the output shows .unitt/* for each test-file. I've fixed this output on v3.1.0, but I forgot to update the documentation. This is an important feature because you can Ctrl + LMB on the file name on your favorite code editor, and this will open that file in a new editor tab.

Full Changelog: v3.1.0...v3.1.1