Merge branch 'ogs653' into 'main'

Adaptions of PyPI

See merge request ogs/tools/ogstools!204

pyproject.toml

@@ -16,7 +16,6 @@ classifiers = [
   "Topic :: Software Development :: Libraries :: Python Modules",
   "Topic :: Scientific/Engineering :: Physics",
   "Topic :: Scientific/Engineering :: Mathematics",
-  "Topic :: Scientific/Engineering :: Finite Element Method (FEM)",
   "Topic :: Scientific/Engineering :: Visualization",
   "License :: OSI Approved :: BSD License",
   "Programming Language :: Python :: 3.10",