Fix wheels, again.

Attempt to fix wheel build/upload

Download submodules with CMake's FetchContent.

Another brown paper-bag release to fix stuff.

Use the Readme as PyPI long description.

Fixes to wheel building.

• Bugfix to work with newer Boost

• Bugfix: fixed issue with CMake when not building with setup.py

Allow building the package directly from the repo or an sdist by using submodules or a clean clone of c dependencies

• Python bindings to fetch positions and rotations based on list of IDs
• Generalized function to select and fetch properties based on list of IDs