add task to makefile for generating/updating CHANGES file before releases

scripts/utils.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+update_changes_file() {
+	local LATEST_STABLE_RELEASE
+	LATEST_STABLE_RELEASE=$(git describe --tags $(git rev-list --tags --max-count=1))
+
+	[[ -f CHANGES ]] && mv CHANGES CHANGES.old
+
+	{ git log \
+		--pretty=format:"[%ai] %<(69,trunc) %s %><(15) %aN {%h}" \
+		--cherry-pick "${LATEST_STABLE_RELEASE}...HEAD"; } > CHANGES
+
+	[[ -f CHANGES.old ]] && cat CHANGES.old >> CHANGES && rm CHANGES.old
+
+	git add CHANGES
+	git commit -m 'RELEASE PREP :: Update CHANGES file.'
+	git push
+}
+
+
+case $1 in
+	changes)
+		update_changes_file
+		exit $?
+	;;
+
+	*)
+		exit 0
+	;;
+esac