diff --git a/package-lock.json b/package-lock.json
old mode 100755
new mode 100644
index 15f723f..aa4312f
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
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-      "resolved": "http://registry.npmjs.org/ansi-regex/-/ansi-regex-0.2.1.tgz",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-0.2.1.tgz",
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@@ -46,7 +46,7 @@
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-          "resolved": "http://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
+          "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
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@@ -74,9 +74,12 @@
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-      "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+      "version": "2.6.4",
+      "resolved": "http://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
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@@ -434,7 +437,7 @@
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-          "resolved": "http://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
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@@ -733,7 +736,7 @@
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-          "resolved": "http://registry.npmjs.org/graceful-fs/-/graceful-fs-1.2.3.tgz",
+          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-1.2.3.tgz",
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@@ -761,7 +764,7 @@
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-          "resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
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@@ -778,7 +781,7 @@
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-          "resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
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@@ -1053,7 +1056,7 @@
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-          "resolved": "http://registry.npmjs.org/htmlparser2/-/htmlparser2-3.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.3.0.tgz",
           "integrity": "sha1-zHDQWln2VC5D8OaFyYLhTJJKnv4=",
           "dev": true,
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@@ -1075,7 +1078,7 @@
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-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
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@@ -1087,13 +1090,13 @@
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-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
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         "underscore": {
           "version": "1.4.4",
-          "resolved": "http://registry.npmjs.org/underscore/-/underscore-1.4.4.tgz",
+          "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.4.4.tgz",
           "integrity": "sha1-YaajIBBiKvoHljvzJSA88SI51gQ=",
           "dev": true
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@@ -1135,6 +1138,11 @@
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       "dev": true
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+    "lodash": {
+      "version": "4.17.21",
+      "resolved": "http://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+    },
     "lodash.assignin": {
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       "resolved": "https://registry.npmjs.org/lodash.assignin/-/lodash.assignin-4.2.0.tgz",
@@ -1203,7 +1211,7 @@
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       "version": "2.7.3",
-      "resolved": "http://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
       "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI=",
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@@ -1218,7 +1226,7 @@
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-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
           "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
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@@ -1229,7 +1237,7 @@
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-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
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@@ -1401,6 +1409,7 @@
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           "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -2734,7 +2743,8 @@
           "version": "1.0.1",
           "resolved": false,
           "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",
@@ -4406,7 +4416,7 @@
       "dependencies": {
         "readable-stream": {
           "version": "1.0.34",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
           "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
           "requires": {
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@@ -4417,7 +4427,7 @@
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         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
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@@ -4536,7 +4546,7 @@
       "dependencies": {
         "readable-stream": {
           "version": "1.0.34",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
           "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
           "requires": {
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@@ -4547,7 +4557,7 @@
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-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
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@@ -4738,7 +4748,7 @@
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         "readable-stream": {
           "version": "2.3.6",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
           "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "dev": true,
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@@ -4754,7 +4764,7 @@
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         "string_decoder": {
           "version": "1.1.1",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
           "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
           "dev": true,
           "optional": true,
diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index d143b85..1c61d63
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "test": "grunt test"
   },
   "dependencies": {
-    "async": "^1.4.2",
+    "async": "^2.6.4",
     "rfg-api": "^0.5.0"
   },
   "devDependencies": {