docs: Add CPython implementation and Python 3 only metadata (#1324)

* Add metadata for Python3 only and CPython implementation to setup.cfg
scikit-hep · Feb 17, 2021 · aab6953 · aab6953
1 parent 6c28066
commit aab6953
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/setup.cfg b/setup.cfg
@@ -21,8 +21,10 @@ classifiers =
     Topic :: Scientific/Engineering
     Topic :: Scientific/Engineering :: Physics
     Programming Language :: Python :: 3
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: Implementation :: CPython
 
 [options]
 setup_requires =