Remove support for py 3.13, add support for 3.10

Author: bobleesj

pyproject.toml

@@ -14,7 +14,7 @@ maintainers = [
 description = "PDFfit2 - real space structure refinement program."
 keywords = ["PDF", "structure refinement"]
 readme = "README.rst"
-requires-python = ">=3.11, <3.14"
+requires-python = ">=3.10, <3.13"
 classifiers = [
         'Development Status :: 5 - Production/Stable',
         'Environment :: Console',
@@ -25,9 +25,9 @@ classifiers = [
         'Operating System :: Microsoft :: Windows',
         'Operating System :: POSIX',
         'Operating System :: Unix',
+        'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
-        'Programming Language :: Python :: 3.13',
         'Topic :: Scientific/Engineering :: Physics',
         'Topic :: Scientific/Engineering :: Chemistry',
 ]