Upload on pypi

Can you please actually upload the project on pypi? Also there is already project called `pyTree`, so that won't probably work and will require renaming to something like `treenotation`.

Start by inspecting the project’s Python package metadata and current distribution name, then check whether pyTree is already taken on PyPI. The work is done when the project is published successfully under an available name, with the requested rename reflected consistently across the package.

Written by the indexing model from the issue text.