Support free threading

Author: johnthagen

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python-version: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
+        python-version: [ "3.10", "3.11", "3.12", "3.13", "3.14", "3.14t" ]
     steps:
       - name: Checkout code
         uses: actions/checkout@v5

noxfile.py

@@ -7,7 +7,7 @@
 
 
 @session(
-    python=["3.10", "3.11", "3.12", "3.13", "3.14"],
+    python=["3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"],
     uv_groups=["test"],
 )
 def test(s: Session) -> None:

pyproject.toml

@@ -18,6 +18,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: Free Threading :: 3 - Stable",
     "Typing :: Typed",
     # Include this classifier to prevent accidentally publishing private code to PyPI.
     #   https://pypi.org/classifiers/