diff --git a/package-lock.json b/package-lock.json
index b9a9a55..dc96ebf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -162,6 +162,15 @@
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+      "dev": true,
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@@ -3253,6 +3271,16 @@
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+      "resolved": "https://registry.npmjs.org/fileset/-/fileset-2.0.3.tgz",
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@@ -4299,7 +4320,8 @@
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-          "resolved": "",
+          "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.8.3.tgz",
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@@ -5316,12 +5338,18 @@
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-      "resolved": "",
+      "resolved": "https://registry.npmjs.org/istanbul-api/-/istanbul-api-1.1.0.tgz",
+      "integrity": "sha512-LjJx386QhmkSuI80u6HAhfy6lu+RL7Os7GH9ndF8nS6mMGORyc8mM972pZfy7EsVevtXDolH0e48SkQLJeuHFA==",
       "dev": true,
       "requires": {
         "async": "^2.1.4",
+        "fileset": "^2.0.2",
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+        "istanbul-lib-hook": "^1.0.0-alpha.4",
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+        "istanbul-lib-report": "^1.0.0-alpha.3",
+        "istanbul-lib-source-maps": "^1.1.0",
+        "istanbul-reports": "^1.0.0",
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@@ -5338,7 +5366,8 @@
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-          "resolved": "",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.7.0.tgz",
+          "integrity": "sha512-eIlkGty7HGmntbV6P/ZlAsoncFLGsNoM27lkTzS+oneY/EiNhj+geqD9ezg/ip+SW6Var0BJU2JtV0vEUZpWVQ==",
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@@ -5353,6 +5382,15 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/istanbul-lib-hook/-/istanbul-lib-hook-1.2.2.tgz",
+      "integrity": "sha512-/Jmq7Y1VeHnZEQ3TL10VHyb564mn6VrQXHchON9Jf/AEcmQ3ZIiyD1BVzNOKTZf/G3gE+kiGK6SmpF9y3qGPLw==",
+      "dev": true,
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@@ -5368,6 +5406,103 @@
         "semver": "^5.3.0"
       }
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+    "istanbul-lib-report": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-1.1.5.tgz",
+      "integrity": "sha512-UsYfRMoi6QO/doUshYNqcKJqVmFe9w51GZz8BS3WB0lYxAllQYklka2wP9+dGZeHYaWIdcXUx8JGdbqaoXRXzw==",
+      "dev": true,
+      "requires": {
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+        "mkdirp": "^0.5.1",
+        "path-parse": "^1.0.5",
+        "supports-color": "^3.1.2"
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+          "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-1.2.1.tgz",
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+          "dev": true
+        }
+      }
+    },
+    "istanbul-lib-source-maps": {
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-source-maps/-/istanbul-lib-source-maps-1.2.6.tgz",
+      "integrity": "sha512-TtbsY5GIHgbMsMiRw35YBHGpZ1DVFEO19vxxeiDMYaeOFOCzfnYVxvl6pOUIZR4dtPhAGpSMup8OyF8ubsaqEg==",
+      "dev": true,
+      "requires": {
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+        "istanbul-lib-coverage": "^1.2.1",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.6.1",
+        "source-map": "^0.5.3"
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+          "dev": true,
+          "requires": {
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+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
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+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.1.1",
+            "once": "^1.3.0",
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+          "dev": true,
+          "requires": {
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+        "ms": {
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+          "dev": true
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+        "rimraf": {
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+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+          "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+          "dev": true,
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+    },
+    "istanbul-reports": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/istanbul-reports/-/istanbul-reports-1.5.1.tgz",
+      "integrity": "sha512-+cfoZ0UXzWjhAdzosCPP3AN8vvef8XDkWtTfgaN+7L3YTpNYITnCaEkceo5SEYy644VkHka/P1FvkWvrG/rrJw==",
+      "dev": true,
+      "requires": {
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+      }
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@@ -6751,6 +6886,12 @@
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+    "path-parse": {
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+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
+      "integrity": "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==",
+      "dev": true
+    },
     "path-to-regexp": {
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@@ -7350,10 +7491,11 @@
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-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.3.0.tgz",
-      "integrity": "sha1-9AOyZPI7wBIox0ExtAfxjV6l1EI=",
-      "dev": true
+      "version": "6.2.4",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.2.4.tgz",
+      "integrity": "sha512-E57gmgKXqDda+qWTkUJgIwgJICK7zgMfqZZopTRKZ6mY9gzLlmJN9EpXNnDrTxXFlOM/a+I28kJkF/60rqgnYw==",
+      "dev": true,
+      "optional": true
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       "version": "4.2.3",
@@ -7838,6 +7980,12 @@
         "uuid": "^3.0.0"
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+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.3.3.tgz",
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+          "dev": true
+        },
         "tough-cookie": {
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           "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",