diff --git a/package-lock.json b/package-lock.json
index 900c74d..57e20ec 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -705,7 +705,7 @@
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-      "resolved": "http://registry.npmjs.org/@types/node/-/node-8.9.5.tgz",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.9.5.tgz",
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@@ -1374,7 +1374,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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       "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
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@@ -3099,18 +3100,32 @@
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+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
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-        "brorand": "^1.0.1",
+        "bn.js": "^4.11.9",
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-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0",
-        "minimalistic-crypto-utils": "^1.0.0"
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
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+          "dev": true
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+        "inherits": {
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
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@@ -3159,7 +3174,7 @@
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@@ -3196,7 +3211,7 @@
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@@ -3956,7 +3971,7 @@
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-          "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
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@@ -4047,7 +4062,8 @@
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@@ -4068,12 +4084,14 @@
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@@ -4088,17 +4106,20 @@
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@@ -4215,7 +4236,8 @@
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@@ -4227,6 +4249,7 @@
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@@ -4241,6 +4264,7 @@
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@@ -4248,12 +4272,14 @@
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@@ -4272,6 +4298,7 @@
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@@ -4352,7 +4379,8 @@
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@@ -4364,6 +4392,7 @@
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           "bundled": true,
           "dev": true,
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@@ -4449,7 +4478,8 @@
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@@ -4485,6 +4515,7 @@
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           "bundled": true,
           "dev": true,
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@@ -4504,6 +4535,7 @@
           "version": "3.0.1",
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@@ -4547,12 +4579,14 @@
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           "version": "1.0.2",
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+          "dev": true,
+          "optional": true
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           "version": "3.0.2",
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@@ -4561,6 +4595,7 @@
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@@ -4610,7 +4645,8 @@
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       "integrity": "sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4=",
-      "dev": true
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@@ -5688,7 +5724,8 @@
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       "integrity": "sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=",
-      "dev": true
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@@ -6141,7 +6178,7 @@
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-          "resolved": "http://registry.npmjs.org/es6-promise/-/es6-promise-3.0.2.tgz",
+          "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-3.0.2.tgz",
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@@ -6319,7 +6356,7 @@
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-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
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@@ -6497,6 +6534,7 @@
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       "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
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@@ -6509,7 +6547,8 @@
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-          "dev": true
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-      "dev": true
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@@ -7293,7 +7333,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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@@ -7731,7 +7771,7 @@
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-      "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",
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@@ -7888,6 +7928,7 @@
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       "integrity": "sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=",
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@@ -8238,7 +8279,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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@@ -8548,6 +8589,7 @@
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       "integrity": "sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=",
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@@ -8569,7 +8612,8 @@
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-          "dev": true
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@@ -8598,6 +8644,7 @@
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@@ -8998,7 +9045,7 @@
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-      "resolved": "http://registry.npmjs.org/sax/-/sax-0.5.8.tgz",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-0.5.8.tgz",
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-          "resolved": "http://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
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