Tweak display of vUNSTABLE changelog

scripts/generate-changelog.sh

@@ -16,14 +16,24 @@ rm -f rendered.md
 # Generate changelog
 towncrier --yes
 
+if [ "$VERSION" = "vUNSTABLE" ]; then
+    TITLE="Changes since last release"
+    LINKTITLE="Unstable"
+    FILENAME="unstable.md"
+else
+    TITLE="$VERSION Changelog"
+    LINKTITLE="$VERSION"
+    FILENAME="$VERSION.md"
+fi
+
 {
     # Prepare the header
     # We include the generation date in the front matter so that we can use it
     # to sort the changelogs at build time.
     cat <<EOF
 ---
-title: $VERSION Changelog
-linkTitle: $VERSION
+title: $TITLE
+linkTitle: $LINKTITLE
 type: docs
 outputs:
   - html
@@ -37,7 +47,7 @@ EOF
 
     # Remove trailing whitespace (such as our intentionally blank RST headings)
     sed -e "s/[ ]*$//" rendered.md
-} > ../content/changelog/$VERSION.md
+} > ../content/changelog/$FILENAME
 
 # Cleanup
 rm -v rendered.md