From 12605cceeb04b9e69a8731bacd0629f633c3adcd Mon Sep 17 00:00:00 2001
From: Dylan Weiss <dylan.weiss@gmail.com>
Date: Wed, 17 Aug 2016 11:45:52 -0400
Subject: [PATCH] Don't mutate `this.opts.draggable` or `this.opts.resizable`
 when using `_.extend`. Fixes #505.

---
 src/gridstack.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gridstack.js b/src/gridstack.js
index 96f1941..a3e502a 100644
--- a/src/gridstack.js
+++ b/src/gridstack.js
@@ -1115,13 +1115,13 @@
         };
 
         el
-            .draggable(_.extend(this.opts.draggable, {
+            .draggable(_.extend({}, this.opts.draggable, {
                 containment: this.opts.isNested ? this.container.parent() : null,
                 start: onStartMoving,
                 stop: onEndMoving,
                 drag: dragOrResize
             }))
-            .resizable(_.extend(this.opts.resizable, {
+            .resizable(_.extend({}, this.opts.resizable, {
                 start: onStartMoving,
                 stop: onEndMoving,
                 resize: dragOrResize