Cope with Python developer harassment

Author: rocky

pyproject.toml

@@ -24,15 +24,14 @@ dependencies = [
 ]
 requires-python = ">=3.9"
 readme = "README.rst"
-license = {text = "GPL-3.0-only"}
+license = "GPL-3.0-or-later"
 keywords = ["Mathematica", "Wolfram", "Interpreter", "Shell", "Math", "CAS"]
 maintainers = [
     {name = "Mathics3 Group"},
 ]
 classifiers = [
     "Intended Audience :: Developers",
     "Intended Audience :: Science/Research",
-    "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",