Typer-cloup-cli

* ⬆ Update dependency *typer-cloup* to 0.10.0
* ✏ Remove redundant type hints
* ✏ Fix docstrings in `multi_app` test asset

* 📝 Miscellaneous improvements to docs
* ⬆️ Update dependency `pytest-xdist`
* ✏ Fix comment in `scripts/test.sh`

* ⬆ Update dependency typer-cloup to 0.9.0

* 👷 Fix definitions of manual inputs in GitHub workflows
* 🔧 Rename package module to `typer_cloup_cli`
* ⬆ Update dependency *typer-cloup* to 0.8.0
* 🔧 Update scripts
* ✨ Replace calls to `sys.exit()` with `raise typer.Exit()`
* ✅ Add `pragma: no cover` to line only used with old Python
* 📝 Update more docs to point to own site

* 🔧 Fix single-sourcing of package version
* ⬆ Update build system
* 📝 Add dependency *docstring_parser*
* ⬆ Update dependency *typer-cloup*
* 📝 Do not prefix calls with `python -m` when unnecessary
* 🐛 Fix Poetry set-up in GitHub workflows
* ✨ Add support for Click 8
* ✨ Migrate from *typer* to *typer-cloup*
* ⬇️ Drop support for Python 3.6
* 👷 Fix *poetry* commands in GitHub workflows
* 👷 Update versions of actions in GitHub workflows
* 👷 Fix formatting of GitHub workflows
* 📝 Update copyright in license
* 📝 Update docs to point to own site
* ✏ Fix grammar/style in README
* ✏ Fix indentation in README
* 📝 Update project metadata
* 🔧 Sort gitignore entries
* ✅ Report coverage in XML