substitute: icon-box, transform to column then let it cascade

Author: Arukuen

src/block/icon-box/substitute.js

@@ -0,0 +1,15 @@
+export const substitute = {
+	from: 'stackable/icon-box',
+	transform: ( oldAttributes, innerBlocks ) => {
+		return [
+			'stackable/columns',
+			{
+				...oldAttributes,
+			},
+			[ [ 'stackable/column', {}, innerBlocks ] ],
+		]
+	},
+
+}
+
+export default substitute