diff --git a/package-lock.json b/package-lock.json
index 6c47a3a..dfe2f54 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -426,7 +426,7 @@
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@@ -854,7 +854,7 @@
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-      "resolved": "http://registry.npmjs.org/browserify/-/browserify-13.3.0.tgz",
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@@ -962,7 +962,7 @@
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-          "resolved": "http://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
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+      "version": "6.5.4",
+      "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",
+        "brorand": "^1.1.0",
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-        "hmac-drbg": "^1.0.0",
-        "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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@@ -2377,7 +2391,7 @@
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-      "resolved": "http://registry.npmjs.org/events/-/events-1.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/events/-/events-1.1.1.tgz",
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-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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-          "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
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-              "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.0.6.tgz",
+              "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.0.6.tgz",
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@@ -4885,7 +4899,7 @@
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-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
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@@ -7305,7 +7319,7 @@
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+      "resolved": "https://registry.npmjs.org/pako/-/pako-0.2.9.tgz",
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-          "resolved": "http://registry.npmjs.org/through/-/through-1.1.2.tgz",
+          "resolved": "https://registry.npmjs.org/through/-/through-1.1.2.tgz",
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@@ -8746,7 +8760,7 @@
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-          "resolved": "http://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
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@@ -8976,7 +8990,7 @@
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@@ -9427,7 +9441,7 @@
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@@ -9695,7 +9709,7 @@
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@@ -9858,7 +9872,7 @@
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