make gh release and publish to PyPI when version tag is created

.github/workflows/python-publish.yml

@@ -0,0 +1,71 @@
+name: Publish Python Package
+
+on:
+  push:
+    tags:
+      - '[0-9]*.[0-9]*.[0-9]*'
+      - 'v[0-9]*.[0-9]*.[0-9]*'
+
+permissions:
+  contents: write  # Required for creating a GitHub release
+  id-token: write  # Required for trusted publishing to PyPI
+
+jobs:
+  create-release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Create GitHub Release
+        id: create_release
+        uses: actions/create-release@v1
+        with:
+          tag_name: ${{ github.ref_name }}
+          release_name: Release ${{ github.ref_name }}
+          body: |
+            This is an automated release for version ${{ github.ref_name }}.
+          draft: false
+          prerelease: false
+
+  release-build:
+    runs-on: ubuntu-latest
+    needs: create-release
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - name: Build release distributions
+        run: |
+          python -m pip install build
+          python -m build
+
+      - name: Upload distributions
+        uses: actions/upload-artifact@v4
+        with:
+          name: release-dists
+          path: dist/
+
+  pypi-publish:
+    runs-on: ubuntu-latest
+    needs: release-build
+    environment:
+      name: release
+      url: https://pypi.org/project/ammber
+
+    steps:
+      - name: Retrieve release distributions
+        uses: actions/download-artifact@v4
+        with:
+          name: release-dists
+          path: dist/
+
+      - name: Publish release distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: dist/

pyproject.toml

@@ -51,8 +51,6 @@ dependencies = [
 classifiers=[
     'Development Status :: 1 - Planning',
     'Intended Audience :: Science/Research',
-    'Programming Language :: Python :: 2',
-    'Programming Language :: Python :: 2.7',
     'Programming Language :: Python :: 3',
     'Programming Language :: Python :: 3.4',
     'Programming Language :: Python :: 3.5',