In `CONTRIBUTING.md` document how to: - release a pre-release on PyPI: [append `[{a|b|rc}N]` to the version, it will be automatically detected as pre-release by PyPI](https://pythonpackaging.info/07-Package-Release.html). - install a pre-release from PyPI: ```sh pip install silkaj --user --upgrade --pre ``` - install `silkaj` from PyPI test and the dependencies (i.e. DuniterPy) from PyPI (have been removed from the documentation): ```sh pip install silkaj --user --upgrade -i https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple/ ```