Add support for Python 3.13 (#236)

Also upgrade some GitHub actions to their latest versions.

Author: jparise

.github/workflows/ci.yml

@@ -13,11 +13,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12", pypy-3.8]
+        python-version: [3.8, 3.9, "3.10", "3.11", "3.12", "3.13", pypy-3.8]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies

setup.py

@@ -64,6 +64,7 @@ def run_tests(self):
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Programming Language :: Python :: 3 :: Only',
         'Topic :: Software Development :: Libraries :: Python Modules',
         'Topic :: Software Development :: Quality Assurance',

tox.ini

@@ -5,7 +5,8 @@ envlist =
     py310-flake8-{v5,v6,latest},
     py311-flake8-{v5,v6,latest},
     py312-flake8-{v5,v6,latest},
-    py312-flake8,
+    py313-flake8-{v5,v6,latest},
+    py313-flake8,
     pypy3
 
 [gh-actions]
@@ -14,7 +15,8 @@ python =
     3.9: py39
     3.10: py310
     3.11: py311
-    3.12: py312, py312-flake8
+    3.12: py312
+    3.13: py313, py313-flake8
     pypy-3.8: pypy3
 
 [testenv]