diff --git a/package-lock.json b/package-lock.json
index 1d6a45c..389a519 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -279,8 +279,7 @@
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       "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
-      "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=",
-      "dev": true
+      "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8="
     },
     "browser-stdout": {
       "version": "1.3.1",
@@ -897,18 +896,29 @@
       "dev": true
     },
     "elliptic": {
-      "version": "6.4.1",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
-      "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
-      "dev": true,
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
       "requires": {
-        "bn.js": "^4.4.0",
-        "brorand": "^1.0.1",
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
         "hash.js": "^1.0.0",
-        "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"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.12.0",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+          "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        }
       }
     },
     "encodeurl": {
@@ -4151,20 +4161,6 @@
           "resolved": "https://registry.npmjs.org/elegant-spinner/-/elegant-spinner-1.0.1.tgz",
           "integrity": "sha1-2wQ1IcldfjA/2PNFvtwzSc+wcp4="
         },
-        "elliptic": {
-          "version": "6.4.1",
-          "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
-          "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
-          "requires": {
-            "bn.js": "^4.4.0",
-            "brorand": "^1.0.1",
-            "hash.js": "^1.0.0",
-            "hmac-drbg": "^1.0.0",
-            "inherits": "^2.0.1",
-            "minimalistic-assert": "^1.0.0",
-            "minimalistic-crypto-utils": "^1.0.0"
-          }
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           "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
@@ -5219,7 +5215,6 @@
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             "aes-js": "3.0.0",
             "bn.js": "^4.4.0",
-            "elliptic": "6.3.3",
             "hash.js": "1.1.3",
             "js-sha3": "0.5.7",
             "scrypt-js": "2.0.4",
@@ -5233,17 +5228,6 @@
               "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.0.0.tgz",
               "integrity": "sha1-4h3xCtbCBTKVvLuNq0Cwnb6ofk0="
             },
-            "elliptic": {
-              "version": "6.3.3",
-              "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz",
-              "integrity": "sha1-VILZZG1UvLif19mU/J4ulWiHbj8=",
-              "requires": {
-                "bn.js": "^4.4.0",
-                "brorand": "^1.0.1",
-                "hash.js": "^1.0.0",
-                "inherits": "^2.0.1"
-              }
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               "version": "1.1.3",
               "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.3.tgz",
@@ -13201,7 +13185,6 @@
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       "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
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-      "dev": true,
       "requires": {
         "inherits": "^2.0.3",
         "minimalistic-assert": "^1.0.1"
@@ -13217,7 +13200,6 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
       "integrity": "sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=",
-      "dev": true,
       "requires": {
         "hash.js": "^1.0.3",
         "minimalistic-assert": "^1.0.0",
@@ -13291,8 +13273,7 @@
     "inherits": {
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       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-      "dev": true
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
     },
     "invert-kv": {
       "version": "2.0.0",
@@ -13666,14 +13647,12 @@
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       "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
-      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==",
-      "dev": true
+      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
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     "minimalistic-crypto-utils": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
-      "integrity": "sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=",
-      "dev": true
+      "integrity": "sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo="
     },
     "minimatch": {
       "version": "3.0.4",