initial commit, completed 40% of first milestone

src/utils/index.js

@@ -0,0 +1,11 @@
+/* eslint-disable import/prefer-default-export */
+
+const move = (array, element, delta) => {
+  const index = array.indexOf(element);
+  const newIndex = index + delta;
+  if (newIndex < 0 || newIndex === array.length) return;
+  const indexes = [index, newIndex].sort((a, b) => a - b);
+  array.splice(indexes[0], 2, array[indexes[1]], array[indexes[0]]);
+};
+
+export { move };