Add merge helper

Author: bep

merge-release.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+if (( $# < 1 ));
+  then
+    echo "USAGE: ./merge-release.sh 0.76.0"
+    exit 1
+fi
+
+die() { echo "$*" 1>&2 ; exit 1; }
+
+v=$1
+git merge "release-${v}" || die;
+git push || die;
+
+git checkout stable || die;
+git reset --hard "v${v}" || die;
+git push -f || die;
+
+git checkout master || die;
+
+ git subtree push --prefix=docs/ docs-local "tempv${v}";
+
+