make the release action append full changelog (commits) since last release

.github/workflows/release.yaml

@@ -20,6 +20,7 @@ jobs:
       uses: actions/checkout@v2
       with:
         ref: ${{ github.head_ref }}
+        fetch-depth: 0
 
     - name: Setup Node.js
       uses: actions/setup-node@v2
@@ -41,7 +42,7 @@ jobs:
         zip -r DribbblishDynamic_v${{ github.event.inputs.version }}.zip *
         mv DribbblishDynamic_v${{ github.event.inputs.version }}.zip ..
 
-    - name: Read CHANGELOG.md
+    - name: Read CHANGELOG.md and get latest Tag
       run: |
         [ -s CHANGELOG.md ] && CHANGELOG=$(< CHANGELOG.md) || CHANGELOG="*Empty.*"
 
@@ -49,6 +50,8 @@ jobs:
         echo "$CHANGELOG" >> $GITHUB_ENV
         echo "EOF" >> $GITHUB_ENV
 
+        echo "LATEST_TAG=$(git describe --tags --abbrev=0)" >> $GITHUB_ENV
+
     - name: Upload Release
       uses: softprops/action-gh-release@v1
       with:
@@ -61,6 +64,8 @@ jobs:
           ## Changelog
           ${{ env.CHANGELOG }}
 
+          Full changelog [here](https://github.com/JulienMaille/dribbblish-dynamic-theme/compare/${{ env.LATEST_TAG }}...${{ github.event.inputs.version }})
+
           ---
           ### Install / Update
           #### Windows (PowerShell)