Add github action to create release

Author: Josef-Friedrich

.github/workflows/gh-release.yml

@@ -0,0 +1,34 @@
+name: Create a Github release
+
+on:
+  push:
+    # Pattern matched against refs/tags
+    tags:
+      - "*" # Push events to every tag not containing /
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      # https://github.com/actions/checkout
+      - name: Checkout the repository
+        uses: actions/checkout@v4
+      # https://github.com/actions/setup-java
+      - uses: actions/setup-java@v4
+        with:
+          java-version: "17"
+          distribution: "temurin"
+          cache: maven
+      - name: Package using Maven
+        run: mvn package
+      # https://github.com/softprops/action-gh-release
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          # The action uses the javascript glob library
+          files: |
+            jbox2d-library/target/jbox2d-library-*.jar
+            jbox2d-testbed/target/jbox2d-testbed-*-jar-with-dependencies.jar

CHANGELOG.md

@@ -5,6 +5,20 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [v3.1.0](https://github.com/engine-pi/jbox2d/releases/tag/v3.1.0) - 2024-08-05
+
+<small>[Compare with v3.0.0](https://github.com/engine-pi/jbox2d/compare/v3.0.0...v3.1.0)</small>
+
+### Added
+
+35ffd6f676c55b0126ac01a3b0351a161abbf025) by Josef Friedrich).
+- Add animated gifs ([daf7ff2](https://github.com/engine-pi/jbox2d/commit/daf7ff2ee13a101109616875a3f5b1d6040f8536) by Josef Friedrich).
+- Add some permalinks ([55c5fc1](https://github.com/engine-pi/jbox2d/commit/55c5fc17c2fa352e494dae26e5c3505d643948f2) by Josef Friedrich).
+
+### Removed
+
+- Remove some hungarian m_ prefixes ([1506f20](https://github.com/engine-pi/jbox2d/commit/1506f200d70463628a3c0634d395a7fee1783728) by Josef Friedrich).
+
 ## [v3.0.0](https://github.com/engine-pi/jbox2d/releases/tag/v3.0.0) - 2024-08-02
 
 <small>[Compare with v2.3.1](https://github.com/engine-pi/jbox2d/compare/v2.3.1...v3.0.0)</small>