Release v0.3.1: update changelog, bump version, add PyPI publish workflow

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: whtsky

.github/workflows/publish.yml

@@ -0,0 +1,37 @@
+name: Publish to PyPI
+on:
+  push:
+    tags:
+      - "v*"
+jobs:
+  build:
+    name: Build distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+      - run: pip install poetry
+      - run: poetry build
+      - uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/
+  publish:
+    name: Publish to PyPI
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/pixelmatch
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1

README.md

@@ -89,6 +89,11 @@ Compares two images, writes the output diff and returns the number of mismatched
 
 ## Changelog
 
+### v0.3.1
+
+- fix: remove use of deprecated Pillow function [#178](https://github.com/whtsky/pixelmatch-py/pull/178) ([@brianhelba](https://github.com/brianhelba))
+- chore: drop EOL Python versions (3.7-3.9), add support for 3.10-3.14 [#171](https://github.com/whtsky/pixelmatch-py/pull/171)
+
 ### v0.3.0
 
 - feat: add fail_fast option [#144](https://github.com/whtsky/pixelmatch-py/pull/144)

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pixelmatch"
-version = "0.3.0"
+version = "0.3.1"
 description = "A pixel-level image comparison library."
 authors = ["Wu Haotian <whtsky@gmail.com>"]
 license = "ISC"