diff --git a/package-lock.json b/package-lock.json
index 53306ff..9af94a5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -557,10 +557,11 @@
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-      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
-      "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU=",
-      "dev": true
+      "version": "4.12.1",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.1.tgz",
+      "integrity": "sha512-k8TVBiPkPJT9uHLdOKfFpqcfprwBFOAAXXozRubr7R7PfIuKvQlzcI4M0pALeqXN09vdaMbUdUj+pass+uULAg==",
+      "dev": true,
+      "license": "MIT"
     },
     "node_modules/body": {
       "version": "0.1.0",
@@ -588,10 +589,11 @@
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-      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.0.6.tgz",
-      "integrity": "sha1-QChwa5FfkfezSaLgvzw3YDnSFuU=",
-      "dev": true
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
+      "integrity": "sha512-cKV8tMCEpQs4hK/ik71d6LrPOnpkpGBR0wzxqr68g2m/LB2GxVYQroAjMJZRVM1Y4BCjCKc3vAamxSzOY2RP+w==",
+      "dev": true,
+      "license": "MIT"
     },
     "node_modules/browser-pack": {
       "version": "6.0.2",
@@ -1531,15 +1533,19 @@
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-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.2.tgz",
-      "integrity": "sha1-5MgeCCnPCmWrcOmYuCMnI7XBvEg=",
+      "version": "6.6.1",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.6.1.tgz",
+      "integrity": "sha512-RaddvvMatK2LJHqFJ+YA4WysVN5Ita9E35botqIYspQ4TkRAlCicdzKOjlyv/1Za5RyTNn7di//eEV0uTAfe3g==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "bn.js": "^4.4.0",
-        "brorand": "^1.0.1",
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
         "hash.js": "^1.0.0",
-        "inherits": "^2.0.1"
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
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@@ -2361,6 +2367,18 @@
         "he": "bin/he"
       }
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+    "node_modules/hmac-drbg": {
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+      "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
+      "integrity": "sha512-Tti3gMqLdZfhOQY1Mzf/AanLiqh1WTiJgEj26ZuYQ9fbkLomzGchCws4FyrSd4VkpBfiNhaE1On+lOz894jvXg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "hash.js": "^1.0.3",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/home-or-tmp/-/home-or-tmp-1.0.0.tgz",
@@ -2476,10 +2494,11 @@
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-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-      "dev": true
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "dev": true,
+      "license": "ISC"
     },
     "node_modules/ini": {
       "version": "1.3.4",
@@ -3250,10 +3269,18 @@
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-      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.0.tgz",
-      "integrity": "sha1-cCvi3aazf0g2vLP121ZkG2Sh09M=",
-      "dev": true
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
+      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/minimalistic-crypto-utils": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
+      "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg==",
+      "dev": true,
+      "license": "MIT"
     },
     "node_modules/minimatch": {
       "version": "3.0.3",
@@ -3488,7 +3515,7 @@
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-      "resolved": "http://registry.npmjs.org/object-keys/-/object-keys-1.0.11.tgz",
+      "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.0.11.tgz",
       "integrity": "sha1-xUYBd4rVYPEULODgG8yotW0TQm0=",
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@@ -4367,11 +4394,6 @@
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-    "node_modules/shoe/node_modules/sockjs-client": {
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-      "extraneous": true,
-      "inBundle": true
-    },
     "node_modules/sigmund": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",