build: Test 3.13 and fix classifiers

Author: defnull

.github/workflows/run_tests.yml

@@ -14,6 +14,7 @@ jobs:
           - "3.10"
           - "3.11"
           - "3.12"
+          - "3.13"
     container:
       image: "python:${{ matrix.python-version }}"
     steps:

setup.py

@@ -41,9 +41,11 @@
                    'Topic :: Software Development :: Libraries :: Application Frameworks',
                    'Programming Language :: Python :: 2.7',
                    'Programming Language :: Python :: 3',
-                   'Programming Language :: Python :: 3.6',
-                   'Programming Language :: Python :: 3.7',
                    'Programming Language :: Python :: 3.8',
                    'Programming Language :: Python :: 3.9',
+                   'Programming Language :: Python :: 3.10',
+                   'Programming Language :: Python :: 3.11',
+                   'Programming Language :: Python :: 3.12',
+                   'Programming Language :: Python :: 3.13',
                    ],
       )