Build, test, and show support for Python 3.13

This commit repeats at least some of the steps we took for 3.12:

- 9b1dae4765b419778f8721caf9d0a6e05c2758eb
- eda6fa5cfbdfaf1d54cf391ed9c86b72288882a2

.github/workflows/test.yml

@@ -35,13 +35,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.11", "3.12"]
+        # Oldest supported, 'Stable' supported, Newest supported
+        python-version: ["3.8", "3.12", "3.13"]
         platform: [ubuntu-latest]
         include: # Only test on the latest supported stable Python on macOS and Windows.
           - platform: macos-latest
-            python-version: 3.11
+            python-version: 3.12
           - platform: windows-latest
-            python-version: 3.11
+            python-version: 3.12
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}

.github/workflows/wheels.yml

@@ -82,7 +82,7 @@ jobs:
     strategy:
       matrix:
         # aarch64 uses qemu so it's slow, build each py version in parallel jobs
-        python: [38, 39, 310, 311, 312]
+        python: [38, 39, 310, 311, 312, 313]
         arch: [aarch64]
     steps:
     - uses: actions/checkout@v4

setup.py

@@ -167,6 +167,7 @@ classifiers = {
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: 3",
         "Topic :: Text Processing :: Fonts",
         "Topic :: Multimedia :: Graphics",

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.0
-envlist = lint, py3{8,9,10,11,12}-cov, htmlcov
+envlist = lint, py3{8,9,10,11,12,13}-cov, htmlcov
 skip_missing_interpreters=true
 
 [testenv]