diff --git a/package-lock.json b/package-lock.json
index f5cd8e7..56c353d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -231,7 +231,7 @@
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           "version": "3.3.0",
-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
           "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
           "dev": true
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@@ -392,7 +392,7 @@
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-          "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+          "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
           "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
           "dev": true,
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@@ -1765,7 +1765,7 @@
     },
     "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=",
       "dev": true,
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@@ -1920,7 +1920,7 @@
     },
     "color": {
       "version": "0.11.4",
-      "resolved": "http://registry.npmjs.org/color/-/color-0.11.4.tgz",
+      "resolved": "https://registry.npmjs.org/color/-/color-0.11.4.tgz",
       "integrity": "sha1-bXtcdPtl6EHNSHkq0e1eB7kE12Q=",
       "dev": true,
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@@ -2257,7 +2257,7 @@
       "dependencies": {
         "pify": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
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@@ -2315,9 +2315,9 @@
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-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
-      "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
+      "version": "6.5.3",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+      "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
       "dev": true,
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@@ -3503,7 +3503,7 @@
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
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@@ -4221,7 +4221,7 @@
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
           "dev": true
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@@ -4892,7 +4892,7 @@
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
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@@ -5180,7 +5180,7 @@
       "dependencies": {
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-          "resolved": "http://registry.npmjs.org/color/-/color-1.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/color/-/color-1.0.3.tgz",
           "integrity": "sha1-5I6DLYXxTvaU+0aIEcLVz+cptV0=",
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@@ -5225,7 +5225,7 @@
       "dependencies": {
         "color": {
           "version": "1.0.3",
-          "resolved": "http://registry.npmjs.org/color/-/color-1.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/color/-/color-1.0.3.tgz",
           "integrity": "sha1-5I6DLYXxTvaU+0aIEcLVz+cptV0=",
           "dev": true,
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@@ -5707,7 +5707,7 @@
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         "pify": {
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
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@@ -6038,7 +6038,7 @@
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     "reduce-css-calc": {
       "version": "1.3.0",
-      "resolved": "http://registry.npmjs.org/reduce-css-calc/-/reduce-css-calc-1.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/reduce-css-calc/-/reduce-css-calc-1.3.0.tgz",
       "integrity": "sha1-dHyRTgSWFKTJz7umKYca0dKSdxY=",
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@@ -6722,7 +6722,7 @@
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     "strip-ansi": {
       "version": "3.0.1",
-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
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@@ -7780,7 +7780,7 @@
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         "pify": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
           "dev": true
         },