Declare support for Python 3.14 (#143)

Author: AA-Turner

pyproject.toml

@@ -29,6 +29,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python",
     "Topic :: Documentation :: Sphinx",
     "Topic :: Documentation",