packaging: Change update-version to push-new-version

- It also pushes changes and the new tag.
- It was easy to forget to push the new tag.

packaging/push-new-version

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+
+set -e
+
+
+# Only run at the codebase root.
+[ -e .git ]
+# Don't run with uncommited or staged changes.
+git diff --exit-code
+git diff --cached --exit-code
+
+
+NEW_VERSION=$(date "+v%Y.%m.%d")
+CURRENT_VERSION=$(git describe --tags --abbrev=0)
+if [ $NEW_VERSION == $CURRENT_VERSION ]; then
+    git tag --delete $CURRENT_VERSION
+    git push --delete origin $CURRENT_VERSION
+else
+    git grep -l $CURRENT_VERSION | xargs sed -i "s/$CURRENT_VERSION/$NEW_VERSION/g"
+    git diff
+    git commit --all --message="Update version to $NEW_VERSION"
+fi
+git tag $NEW_VERSION
+git log --max-count=1
+git push
+git push --tags