Add Python 3.13 support to CI

Also support free-threaded mode, aka 3.13t, since the readline module
seems to advertise support for it.

.github/workflows/test.yaml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-20.04, macos-13, macos-14]
-        python: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         exclude:
           # There is something fishy about this combo (broken standard readline)
           - os: macos-13

.github/workflows/wheels.yaml

@@ -24,7 +24,7 @@ jobs:
       fail-fast: false
       matrix:
         arch: [x86_64, aarch64]
-        python: [cp36, cp37, cp38, cp39, cp310, cp311, cp312]
+        python: [cp36, cp37, cp38, cp39, cp310, cp311, cp312, cp313]
     steps:
       - uses: actions/checkout@v4
       - uses: docker/setup-qemu-action@v3
@@ -35,6 +35,8 @@ jobs:
         env:
           CIBW_ARCHS: ${{ matrix.arch }}
           CIBW_BUILD: ${{ matrix.python }}-manylinux*
+          # Enable free-threaded support for Python 3.13+
+          CIBW_FREE_THREADED_SUPPORT: 1
           CIBW_TEST_REQUIRES: ""
           CIBW_TEST_COMMAND: python -c "import gnureadline"
       - uses: actions/upload-artifact@v4
@@ -48,7 +50,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-13, macos-14]
-        python: [cp36, cp37, cp38, cp39, cp310, cp311, cp312]
+        python: [cp36, cp37, cp38, cp39, cp310, cp311, cp312, cp313]
         exclude:
           # Python < 3.9 not natively available for Apple Silicon.
           # cibuildwheel tries to do a cross build, which fails.
@@ -61,9 +63,11 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: pypa/cibuildwheel@v2.18.1
+      - uses: pypa/cibuildwheel@v2.21.3
         env:
           CIBW_BUILD: ${{ matrix.python }}-macos*
+          # Enable free-threaded support for Python 3.13+
+          CIBW_FREE_THREADED_SUPPORT: 1
           CIBW_TEST_REQUIRES: ""
           CIBW_TEST_COMMAND: python -c "import gnureadline"
       - uses: actions/upload-artifact@v4

README.rst

@@ -105,7 +105,7 @@ Versions
 --------
 
 The module can be used with both Python 2.x and 3.x, and has been tested with
-Python versions 2.6, 2.7, and 3.2 to 3.12. The first three numbers of the
+Python versions 2.6, 2.7, and 3.2 to 3.13. The first three numbers of the
 module version reflect the version of the underlying GNU Readline library
 (major, minor and patch level), while any additional fourth number
 distinguishes different module updates based on the same Readline library.

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{27,35,36,37,38,39,310,311,312}
+envlist = py{27,35,36,37,38,39,310,311,312,313}
 
 [testenv]
 deps = pytest