Template examples out of date

Hi folks,

Thanks for making this repository of examples. Much appreciated. Unfortunately, they all seem to be obsolete now that nbconvert v6 is out and used in Jupyter Lab v3. Are there any template examples for v6? I am looking specifically for a working example of a template that is set up to be installed with pip.

Many thanks!

The issue names nbconvert v6, JupyterLab 3, and pip-installable templates, but no files or tests. Review the repository's existing template examples and determine what is needed for a working v6 example that can be installed with pip and used in JupyterLab 3. Done means the repository contains such an example.

Written by the indexing model from the issue text.