Upgrade async to fix vulnerabilities

Upgrade async to 0.9.2
Upgrade async to 1.0.0
Upgrade async to 1.1.0
Upgrade async to 1.2.0
Upgrade async to 1.3.0
Upgrade async to 1.4.0
Upgrade async to 1.5.0
Upgrade async to 1.5.2
Upgrade async to 2.0.0
Import specific async modules
Upgrade async to 2.1.5
Upgrade async to 2.2.0
Upgrade async to 2.3.0
Upgrade async to 2.4.1
Upgrade async to 2.5.0
Upgrade async to 2.6.1
Upgrade async to 2.6.2
Upgrade async to 2.6.3
Upgrade async to 3.0.0
Upgrade async to 3.1.1
Upgrade async to 3.2.3

Author: Toby Sullivan

lib/prompt.js

@@ -7,7 +7,8 @@
 
 var events = require('events'),
     readline = require('readline'),
-    async = require('async'),
+    eachSeries = require('async/eachSeries'),
+    rejectSeries = require('async/rejectSeries'),
     read = require('read'),
     validate = require('revalidator').validate,
     winston = require('winston'),
@@ -317,7 +318,7 @@ prompt._get = function (schema, callback) {
     //
     // Now, iterate and assemble the result.
     //
-    async.forEachSeries(iterator, function (branch, next) {
+    eachSeries(iterator, function (branch, next) {
       get(branch, function assembler(err, line) {
         if (err) {
           return next(err);
@@ -409,11 +410,11 @@ prompt.confirm = function (/* msg, options, callback */) {
     }
 
     prompt.get([options], function (err, result) {
-      next(err ? false : yes.test(result[options.name]));
+      next(null, err ? false : yes.test(result[options.name]));
     });
   }
 
-  async.rejectSeries(vars, confirm, function(result) {
+  rejectSeries(vars, confirm, function(err, result) {
     callback(null, result.length===0);
   });
 };

package.json

@@ -18,8 +18,8 @@
     "validation"
   ],
   "dependencies": {
-    "async": "~0.9.0",
     "@colors/colors": "1.5.0",
+    "async": "3.2.3",
     "read": "1.0.x",
     "revalidator": "0.1.x",
     "winston": "2.x"
@@ -35,6 +35,6 @@
   },
   "license": "MIT",
   "engines": {
-    "node": ">= 0.6.6"
+    "node": ">= 6.0.0"
   }
 }