Make PyPI releases (with wheels) through GitHub Actions

.github/workflows/release.yml

@@ -0,0 +1,36 @@
+name: Release Package
+
+on:
+  push:
+    tags: ["release-*"]
+
+permissions:
+  contents: read
+
+jobs:
+  build_package:
+    name: Build Package
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build sdist and wheel
+        run: pipx run build --sdist --wheel
+      - uses: actions/upload-artifact@v3
+        with:
+          path: dist
+
+  pypi-publish:
+    needs: [build_package]
+    name: Upload release to PyPI
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: artifact
+          path: dist
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1

README.md

@@ -9,6 +9,7 @@ Improved colored diff
 Download the [latest](https://github.com/jeffkaufman/icdiff/tags) `icdiff` and put it on your PATH.
 
 Alternatively, install with packaging tools:
+
 ```
 # pip
 pip install icdiff
@@ -35,6 +36,7 @@ icdiff [options] left_file right_file
 Show differences between files in a two column view.
 
 ### Options
+
 ```
   --version             show program's version number and exit
   -h, --help            show this help message and exit
@@ -146,17 +148,16 @@ pip install -r requirements-dev.txt
 
 ## Making a release
 
-* Update ChangeLog with all the changes since the last release
-* Update `__version__` in `icdiff`
-* Run tests, make sure they pass
-* `git commit -a -m "release ${version}"`
-* `git push`
-* `git tag release-${version}`
-* `git push origin release-${version}`
-* `./prepare-release.sh ${prev-version} ${version}`
-* `python3 -m twine upload icdiff-${version}.tar.gz --user "__token__" --password "$TOKEN"`
+- Update ChangeLog with all the changes since the last release
+- Update `__version__` in `icdiff`
+- Run tests, make sure they pass
+- `git commit -a -m "release ${version}"`
+- `git push`
+- `git tag release-${version}`
+- `git push origin release-${version}`
+- A GitHub Action should be triggered due to the release tag being pushed, and will upload to PyPI.
 
 ## License
 
 This file is derived from `difflib.HtmlDiff` which is under [license](https://www.python.org/download/releases/2.6.2/license/).
-I release my changes here under the same license.  This is GPL compatible.
+I release my changes here under the same license. This is GPL compatible.

setup.py

@@ -1,5 +1,4 @@
-from distutils.util import convert_path
-from setuptools import setup, find_packages
+from setuptools import setup
 from icdiff import __version__
 
 setup(
@@ -16,6 +15,7 @@
     author_email="jeff@jefftk.com",
     description="improved colored diff",
     long_description=open('README.md').read(),
+    long_description_content_type='text/markdown',
     scripts=['git-icdiff'],
     py_modules=['icdiff'],
     entry_points={