Build and test Python 3.15 wheels

Add cp315 to the cibuildwheel build list and the 3.15 classifier, pin
cibuildwheel to >=4.1 so CI picks up the 3.15 targets, and add 3.14 and
3.15 to the test matrix.

Closes #265

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: drebbe-intrepid

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
     steps:
     - uses: actions/checkout@v4

.github/workflows/wheels.yml

@@ -38,7 +38,7 @@ jobs:
         run: echo $PYTHON_ICS_VERSION
 
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel
+        run: python -m pip install "cibuildwheel>=4.1"
 
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse

pyproject.toml

@@ -20,6 +20,7 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
 ]
 
 [project.urls]
@@ -51,7 +52,7 @@ requires = [
 
 
 [tool.cibuildwheel]
-build = "cp{310,311,312,313,314}-{win32,win_amd64,macosx_universal2,manylinux_x86_64,manylinux_aarch64}"
+build = "cp{310,311,312,313,314,315}-{win32,win_amd64,macosx_universal2,manylinux_x86_64,manylinux_aarch64}"
 skip = "cp36-* cp37-* cp38-* cp39-* pp* *-manylinux_i686 *-musllinux_*"
 environment = { CIBW_BUILD_VERBOSITY = 1, DISTUTILS_DEBUG = 1, MACOSX_DEPLOYMENT_TARGET = "10.13", CIBW_ARCHS_LINUX = "auto aarch64" }
 before-build = "python -m pip install wheel"