BLD: update pyproject.toml Python classifiers

Author: tacaswell

pyproject.toml

@@ -20,7 +20,7 @@ authors = [
 description = "Structural analysis from neutron and x-ray diffraction"
 readme = "README.md"
 license.file = "LICENSE"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Science/Research",
@@ -29,12 +29,11 @@ classifiers = [
   "Programming Language :: Fortran",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
-  "Programming Language :: Python :: 3.12",   # in progress
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Topic :: Scientific/Engineering",
-  "Typing :: Typed",
 ]
 keywords = ["diffraction", "crystallography", "diffraction",
 	    "powder diffraction", "SAXS", "reflectometry","neutron diffraction",	     "Rietveld"]