diff --git a/package-lock.json b/package-lock.json
index 664ee8b..53477a2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -242,7 +242,7 @@
         },
         "acorn": {
             "version": "1.2.2",
-            "resolved": "http://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
             "integrity": "sha1-yM4n3grMdtiW0rH6099YjZ6C8BQ="
         },
         "acorn-dynamic-import": {
@@ -482,11 +482,18 @@
             "dev": true
         },
         "async": {
-            "version": "2.6.1",
-            "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
-            "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
+            "version": "2.6.4",
+            "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+            "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
             "requires": {
-                "lodash": "^4.17.10"
+                "lodash": "^4.17.14"
+            },
+            "dependencies": {
+                "lodash": {
+                    "version": "4.17.21",
+                    "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+                    "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+                }
             }
         },
         "async-each": {
@@ -554,7 +561,7 @@
                 },
                 "chalk": {
                     "version": "1.1.3",
-                    "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+                    "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
                     "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
                     "requires": {
                         "ansi-styles": "^2.2.1",
@@ -3719,7 +3726,7 @@
         },
         "http-errors": {
             "version": "1.6.3",
-            "resolved": "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+            "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
             "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
             "requires": {
                 "depd": "~1.1.2",
@@ -4339,7 +4346,7 @@
                 },
                 "yargs": {
                     "version": "11.1.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
                     "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
                     "dev": true,
                     "requires": {
@@ -4691,7 +4698,7 @@
                 },
                 "yargs": {
                     "version": "11.1.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
                     "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
                     "dev": true,
                     "requires": {
@@ -5506,7 +5513,7 @@
             "dependencies": {
                 "semver": {
                     "version": "5.3.0",
-                    "resolved": "http://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
+                    "resolved": "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
                     "integrity": "sha1-myzl094C0XxgEq0yaqa00M9U+U8="
                 }
             }
@@ -5592,7 +5599,7 @@
                 },
                 "chalk": {
                     "version": "1.1.3",
-                    "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+                    "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
                     "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
                     "requires": {
                         "ansi-styles": "^2.2.1",
@@ -5842,7 +5849,7 @@
         },
         "os-locale": {
             "version": "1.4.0",
-            "resolved": "http://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
+            "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
             "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
             "requires": {
                 "lcid": "^1.0.0"
@@ -7883,7 +7890,7 @@
                 },
                 "yargs": {
                     "version": "3.10.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
                     "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
                     "requires": {
                         "camelcase": "^1.0.2",
@@ -8548,7 +8555,7 @@
                 },
                 "load-json-file": {
                     "version": "2.0.0",
-                    "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
+                    "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
                     "integrity": "sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=",
                     "requires": {
                         "graceful-fs": "^4.1.2",