Fix equality check for options on changes

Author: Peshou

dist/bundles/ng2-canvas-whiteboard.umd.js

@@ -1,6 +1,6 @@
 {
   "name": "ng2-canvas-whiteboard",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "description": "A Canvas component for Angular which supports free drawing.",
   "main": "./bundles/ng2-canvas-whiteboard.umd.js",
   "module": "./modules/ng2-canvas-whiteboard.es5.js",

dist/bundles/ng2-canvas-whiteboard.umd.min.js

@@ -1,6 +1,6 @@
 {
   "name": "ng2-canvas-whiteboard",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "description": "A Canvas component for Angular which supports free drawing.",
   "main": "./bundles/ng2-canvas-whiteboard.umd.js",
   "module": "./modules/ng2-canvas-whiteboard.es5.js",

dist/modules/ng2-canvas-whiteboard.es5.js

@@ -202,7 +202,7 @@ export class CanvasWhiteboardComponent implements OnInit, AfterViewInit, OnChang
      * If an image exists and it's url changes, we need to redraw the new image on the canvas.
      */
     ngOnChanges(changes: any): void {
-        if (changes.options && isEqual(changes.options.currentValue, changes.options.previousValue)) {
+        if (changes.options && !isEqual(changes.options.currentValue, changes.options.previousValue)) {
             this._initInputsFromOptions(changes.options.currentValue);
         }
     }