feat: non-destructive shuffle

packages/core/array.js

@@ -14,6 +14,12 @@ export function fromObject(object) {
   return array;
 }
 
+export function shuffle(array) {
+  const shuffled = [...array];
+  shuffleInPlace(shuffled);
+  return shuffled;
+}
+
 export function shuffleInPlace(array) {
   let i = 0, j = 0, temp = null;
   for (i = array.length - 1; i > 0; i -= 1) {

packages/core/index.js

@@ -2,6 +2,7 @@ export {
   arrayUnique,
   flatten,
   fromObject as arrayFromObject,
+  shuffle,
   shuffleInPlace
 } from './array';
 export {EventEmitterMixin as EventEmitter} from './event-emitter';