Uninstall and remove references to async module

app/main.js

@@ -11,7 +11,6 @@ const winston = require('winston')
 const moment = require('moment')
 const uuid = require('uuid')
 const events = require('events')
-const async = require('async')
 const path = require('path')
 
 const ee = new events.EventEmitter()

app/package-lock.json

@@ -3554,9 +3554,9 @@
       }
     },
     "handlebars": {
-      "version": "4.0.12",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.0.12.tgz",
-      "integrity": "sha512-RhmTekP+FZL+XNhwS1Wf+bTTZpdLougwt5pcgA1tuz6Jcx0fpH/7z0qd71RKnZHBCxIRBHfBOnio4gViPemNzA==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.1.0.tgz",
+      "integrity": "sha512-l2jRuU1NAWK6AW5qqcTATWQJvNPEwkM7NEKSiv/gqOsoSQbVoWyqVEY5GS+XPQ88zLNmqASRpzfdm8d79hJS+w==",
       "dev": true,
       "requires": {
         "async": "^2.5.0",
@@ -4796,13 +4796,13 @@
       "integrity": "sha1-dVSm+Nhxg0zJe1RisSLEwSTW3pE="
     },
     "mksnapshot": {
-      "version": "0.3.1",
-      "resolved": "https://registry.npmjs.org/mksnapshot/-/mksnapshot-0.3.1.tgz",
-      "integrity": "sha1-JQHAVldDbXQs6Vik/5LHfkDdN+Y=",
+      "version": "0.3.4",
+      "resolved": "https://registry.npmjs.org/mksnapshot/-/mksnapshot-0.3.4.tgz",
+      "integrity": "sha512-FgUTiWiY+35LgL95P/MDYrBuQO5o0s3MmaWKX6ZJWoX4vMOY9vPsAv763l1OSSelL9jPsBQ/wf4bzfqTLNPSFg==",
       "requires": {
         "decompress-zip": "0.3.0",
         "fs-extra": "0.26.7",
-        "request": "^2.79.0"
+        "request": "2.x"
       },
       "dependencies": {
         "fs-extra": {

app/package.json

@@ -40,7 +40,6 @@
   },
   "dependencies": {
     "arduino": "file:lib/arduino",
-    "async": "^2.6.1",
     "capture": "file:lib/capture",
     "delay": "file:lib/delay",
     "display": "file:lib/display",