Fix options spread for node v6

Author: stephencookdev

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 lerna-debug.log
+npm-debug.log

index.js

@@ -81,10 +81,10 @@ module.exports = class SpeedMeasurePlugin {
       return JSON.stringify(outputObj, null, 2);
     if (typeof this.options.outputFormat === "function")
       return this.options.outputFormat(outputObj);
-    return getHumanOutput(outputObj, {
-      ...this.options,
-      verbose: this.options.outputFormat === "humanVerbose",
-    });
+    return getHumanOutput(outputObj, Object.assign(
+      { verbose: this.options.outputFormat === "humanVerbose" },
+      this.options)
+    );
   }
 
   addTimeEvent(category, event, eventType, data = {}) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "speed-measure-webpack-plugin",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "description": "Measure + analyse the speed of your webpack loaders and plugins",
   "main": "index.js",
   "scripts": {