* Add final support for Python 3.13.
- Adjust upstream source name in spec file
- Drop unnecessary removal of egg-info from %setup section
- Fix missing version contraint for Obsoletes
- Switch build system from setuptools to pyproject.toml
* Add python-pip and python-wheel to BuildRequires
* Replace %python_build with %pyproject_wheel
* Replace %python_install with %pyproject_install
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-BTrees?expand=0&rev=40
