Add support for python 3.12 and drop python 2.7 support

Author: jameshilliard

.github/workflows/build_and_upload.yml

@@ -16,13 +16,13 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
-      - uses: "actions/checkout@v3"
+      - uses: "actions/checkout@v4"
         with:
           submodules: true
       - name: "Build wheels"
-        uses: "pypa/cibuildwheel@v2.12.0"
+        uses: "pypa/cibuildwheel@v2.16.1"
         env:
-          CIBW_SKIP: "pp* cp311-win32 cp311-win_amd64" # FIXME
+          CIBW_SKIP: "pp*" # FIXME
           CIBW_BEFORE_BUILD: "pip install -U cython && ./update_cpp.sh"
           CIBW_BEFORE_BUILD_WINDOWS: "pip install -U cython && update_cpp.sh"
           CIBW_TEST_REQUIRES: "pytest"
@@ -35,7 +35,7 @@ jobs:
     name: "Build source distribution"
     runs-on: ubuntu-latest
     steps:
-      - uses: "actions/checkout@v3"
+      - uses: "actions/checkout@v4"
         with:
           submodules: true
       - name: "Install dependencies"
@@ -60,7 +60,7 @@ jobs:
         with:
           name: artifact
           path: dist
-      - uses: "pypa/gh-action-pypi-publish@v1.5.0"
+      - uses: "pypa/gh-action-pypi-publish@v1.8.10"
         with:
           user: __token__
           password: ${{ secrets.PYPI_TOKEN }}

.github/workflows/tests.yml

@@ -13,20 +13,18 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         exclude:
-          - os: windows-latest
-            python-version: "2.7"
           - os: ubuntu-latest
             python-version: "3.6"
       fail-fast: false
 
     steps:
-      - uses: "actions/checkout@v2"
+      - uses: "actions/checkout@v4"
         with:
           submodules: true
-      - uses: "actions/setup-python@v2"
+      - uses: "actions/setup-python@v4"
         with:
           python-version: "${{ matrix.python-version }}"
       - name: "Install dependencies"