Error when installing

Thanks for this useful utility.

Problem with line 83 in the `setup.py`:

When running the `latuni` command, I get the following output:

```
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.10/bin/latuni", line 5, in <module>
    from latuni.__main__ import main
ModuleNotFoundError: No module named 'latuni'
```