diff --git a/package-lock.json b/package-lock.json
index 06d548fe..1b3cf3bc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,29 @@
 {
-  "requires": true,
+  "name": "helios-wallet",
+  "version": "0.2.0",
   "lockfileVersion": 1,
+  "requires": true,
   "dependencies": {
     "@types/node": {
-      "version": "10.17.5",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.17.5.tgz",
-      "integrity": "sha512-RElZIr/7JreF1eY6oD5RF3kpmdcreuQPjg5ri4oQ5g9sq7YWU8HkfB3eH8GwAwxf5OaCh0VPi7r4N/yoTGelrA=="
+      "version": "18.0.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.0.0.tgz",
+      "integrity": "sha512-cHlGmko4gWLVI27cGJntjs/Sj8th9aYwplmZFwmmgYQQvL5NUsgVJG7OddLvNfLqYS31KFN0s3qlaD9qCaxACA=="
+    },
+    "@types/pbkdf2": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@types/pbkdf2/-/pbkdf2-3.1.0.tgz",
+      "integrity": "sha512-Cf63Rv7jCQ0LaL8tNXmEyqTHuIJxRdlS5vMh1mj5voN4+QFhVZnlZruezqpWYDiJ8UTzhP0VmeLXCmBk66YrMQ==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "@types/secp256k1": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/@types/secp256k1/-/secp256k1-4.0.3.tgz",
+      "integrity": "sha512-Da66lEIFeIz9ltsdMZcpQvmrmmoqrfju8pm1BH8WbYjZSwUgCwXLb9C+9XYogwBITnbsSaMdVPb2ekf7TV+03w==",
+      "requires": {
+        "@types/node": "*"
+      }
     },
     "JSONStream": {
       "version": "1.3.5",
@@ -30,25 +48,25 @@
       }
     },
     "accepts": {
-      "version": "1.3.7",
-      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
-      "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
+      "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
       "requires": {
-        "mime-types": "~2.1.24",
-        "negotiator": "0.6.2"
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
       },
       "dependencies": {
         "mime-db": {
-          "version": "1.42.0",
-          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.42.0.tgz",
-          "integrity": "sha512-UbfJCR4UAVRNgMpfImz05smAXK7+c+ZntjaA26ANtkXLlOe947Aag5zdIcKQULAiF9Cq4WxBi9jUs5zkA84bYQ=="
+          "version": "1.52.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
+          "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg=="
         },
         "mime-types": {
-          "version": "2.1.25",
-          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.25.tgz",
-          "integrity": "sha512-5KhStqB5xpTAeGqKBAMgwaYMnQik7teQN4IAzC7npDv6kzeU6prfkR67bc87J1kWMPGkoaZSq1npmexMgkmEVg==",
+          "version": "2.1.35",
+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
+          "integrity": "sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==",
           "requires": {
-            "mime-db": "1.42.0"
+            "mime-db": "1.52.0"
           }
         }
       }
@@ -91,7 +109,7 @@
     "aes-js": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.0.0.tgz",
-      "integrity": "sha1-4h3xCtbCBTKVvLuNq0Cwnb6ofk0="
+      "integrity": "sha512-H7wUZRn8WpTq9jocdxQ2c8x2sKo9ZVmzfRE13GiNJXfp7NcKYEdvl3vspKjXox6RIG2VtaRe4JFvxG4rqp2Zuw=="
     },
     "ajv": {
       "version": "6.9.1",
@@ -156,7 +174,7 @@
     "any-promise": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
-      "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8="
+      "integrity": "sha512-7UvmKalWRt1wgjL1RrGxoSJW/0QZFIegpeGvZG9kjp8vrRu55XTHbwnqq2GpXm9uLbcuhxm3IqX9OB4MZR1b2A=="
     },
     "anymatch": {
       "version": "2.0.0",
@@ -239,7 +257,7 @@
     "array-flatten": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
-      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+      "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg=="
     },
     "array-initial": {
       "version": "1.1.0",
@@ -377,7 +395,7 @@
     "async": {
       "version": "1.5.2",
       "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+      "integrity": "sha512-nSVgobk4rv61R9PUSDtYt7mPVB2olxNR5RWJcAsH676/ef11bUZwvu7+RGYrYauVdDPcO519v68wRhXQtxsV9w=="
     },
     "async-done": {
       "version": "1.3.1",
@@ -528,6 +546,14 @@
         }
       }
     },
+    "base-x": {
+      "version": "3.0.9",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.9.tgz",
+      "integrity": "sha512-H7JU6iBHTal1gp56aKoaa//YUxEaAOUiydvrV/pILqIHXTtqxSkATOnDA2u+jZ/61sD+L/412+7kzXRtWukhpQ==",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "base64-js": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
@@ -552,22 +578,6 @@
       "integrity": "sha512-EgmjVLMn22z7eGGv3kcnHwSnJXmFHjISTY9E/S5lIcTD3Oxw05QTcBLNkJFzcb3cNueUdF/IN4U+d78V0zO8Hw==",
       "dev": true
     },
-    "bindings": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
-      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
-      "requires": {
-        "file-uri-to-path": "1.0.0"
-      }
-    },
-    "bip66": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/bip66/-/bip66-1.1.5.tgz",
-      "integrity": "sha1-AfqHSHhcpwlV1QESF9GzE5lpyiI=",
-      "requires": {
-        "safe-buffer": "^5.0.1"
-      }
-    },
     "bl": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
@@ -577,18 +587,23 @@
         "safe-buffer": "^5.1.1"
       }
     },
+    "blakejs": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/blakejs/-/blakejs-1.2.1.tgz",
+      "integrity": "sha512-QXUSXI3QVc/gJME0dBpXrag1kbzOqCjCX8/b54ntNyW6sjtoqxqRk3LTmXzaJoh71zMsDCjM+47jS7XiwN/+fQ=="
+    },
     "block-stream": {
       "version": "0.0.9",
       "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
-      "integrity": "sha1-E+v+d4oDIFz+A3UUgeu0szAMEmo=",
+      "integrity": "sha512-OorbnJVPII4DuUKbjARAe8u8EfqOmkEEaSFIyoQ7OjTHn6kafxWl0wLgoZ2rXaYd7MyLcDaU4TmhfxtwgcccMQ==",
       "requires": {
         "inherits": "~2.0.0"
       }
     },
     "bluebird": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.1.tgz",
-      "integrity": "sha512-DdmyoGCleJnkbp3nkbxTLJ18rjDsE4yCggEwKNXkeV123sPNfOCYeDoeuOY+F2FrSjO1YXcTU+dsy96KMy+gcg=="
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz",
+      "integrity": "sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg=="
     },
     "bn.js": {
       "version": "4.11.8",
@@ -596,26 +611,31 @@
       "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA=="
     },
     "body-parser": {
-      "version": "1.19.0",
-      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
-      "integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
+      "version": "1.20.0",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.0.tgz",
+      "integrity": "sha512-DfJ+q6EPcGKZD1QWUjSpqp+Q7bDQTsQIF4zfUAtZ6qk+H/3/QRhg9CEp39ss+/T2vw0+HaidC0ecJj/DRLIaKg==",
       "requires": {
-        "bytes": "3.1.0",
+        "bytes": "3.1.2",
         "content-type": "~1.0.4",
         "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "http-errors": "1.7.2",
+        "depd": "2.0.0",
+        "destroy": "1.2.0",
+        "http-errors": "2.0.0",
         "iconv-lite": "0.4.24",
-        "on-finished": "~2.3.0",
-        "qs": "6.7.0",
-        "raw-body": "2.4.0",
-        "type-is": "~1.6.17"
+        "on-finished": "2.4.1",
+        "qs": "6.10.3",
+        "raw-body": "2.5.1",
+        "type-is": "~1.6.18",
+        "unpipe": "1.0.0"
       },
       "dependencies": {
         "qs": {
-          "version": "6.7.0",
-          "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
-          "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ=="
+          "version": "6.10.3",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.10.3.tgz",
+          "integrity": "sha512-wr7M2E0OFRfIfJZjKGieI8lBKb7fRCH4Fv5KNPEs7gJ8jadvotdsS08PzOKR7opXhZ/Xkjtt3WF9g38drmyRqQ==",
+          "requires": {
+            "side-channel": "^1.0.4"
+          }
         }
       }
     },
@@ -796,7 +816,7 @@
     "browserify-sha3": {
       "version": "0.0.4",
       "resolved": "https://registry.npmjs.org/browserify-sha3/-/browserify-sha3-0.0.4.tgz",
-      "integrity": "sha1-CGxHuMgjFsnUcCLCYYWVRXbdjiY=",
+      "integrity": "sha512-WmXX4M8lltqzMnBiPbP9KQdITknmxe4Wp3rhGfpYJst5yOeGwKkHpC0t+Ty22laH4Ltg9YO+p14p93wiipqjxA==",
       "requires": {
         "js-sha3": "^0.6.1",
         "safe-buffer": "^5.1.1"
@@ -824,6 +844,24 @@
         "pako": "~1.0.5"
       }
     },
+    "bs58": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/bs58/-/bs58-4.0.1.tgz",
+      "integrity": "sha512-Ok3Wdf5vOIlBrgCvTq96gBkJw+JUEzdBgyaza5HLtPm7yTHkjRy8+JzNyHF7BHa0bNWOQIp3m5YF0nnFcOIKLw==",
+      "requires": {
+        "base-x": "^3.0.2"
+      }
+    },
+    "bs58check": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/bs58check/-/bs58check-2.1.2.tgz",
+      "integrity": "sha512-0TS1jicxdU09dwJMNZtVAfzPi6Q6QeN0pM1Fkzrjn+XYHvzMKPU3pHVpva+769iNVSfIYWf7LJ6WR+BuuMf8cA==",
+      "requires": {
+        "bs58": "^4.0.0",
+        "create-hash": "^1.1.0",
+        "safe-buffer": "^5.1.2"
+      }
+    },
     "buffer": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.2.1.tgz",
@@ -850,7 +888,7 @@
     "buffer-crc32": {
       "version": "0.2.13",
       "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
-      "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI="
+      "integrity": "sha512-VO9Ht/+p3SN7SKWqcrgEzjGbRSJYTx+Q1pTQC0wrWqHx0vpJraQ6GtHx8tvcg1rlK1byhU5gccxgOgj7B0TDkQ=="
     },
     "buffer-equal": {
       "version": "1.0.0",
@@ -861,7 +899,7 @@
     "buffer-fill": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
-      "integrity": "sha1-+PeLdniYiO858gXNY39o5wISKyw="
+      "integrity": "sha512-T7zexNBwiiaCOGDg9xNX9PBmjrubblRkENuptryuI64URkXDFum9il/JGL8Lm8wYfAXpredVXXZz7eMHilimiQ=="
     },
     "buffer-from": {
       "version": "1.1.1",
@@ -871,7 +909,7 @@
     "buffer-to-arraybuffer": {
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/buffer-to-arraybuffer/-/buffer-to-arraybuffer-0.0.5.tgz",
-      "integrity": "sha1-YGSkD6dutDxyOrqe+PbhIW0QURo="
+      "integrity": "sha512-3dthu5CYiVB1DEJp61FtApNnNndTckcqe4pFcLdvHtrpG+kcyekCJKg4MRiDcFW7A6AODnXB9U4dwQiCW5kzJQ=="
     },
     "buffer-xor": {
       "version": "1.0.3",
@@ -884,9 +922,9 @@
       "integrity": "sha1-hZgoeOIbmOHGZCXgPQF0eI9Wnug="
     },
     "bytes": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
-      "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg=="
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
+      "integrity": "sha512-/Nf7TyzTx6S3yRJObOAV7956r8cr2+Oj8AC5dt8wSP3BQAoeX58NoHyCU8P8zGkNXStjTSi6fzO6F0pBdcYbEg=="
     },
     "cache-base": {
       "version": "1.0.1",
@@ -910,6 +948,15 @@
       "resolved": "https://registry.npmjs.org/cached-path-relative/-/cached-path-relative-1.0.2.tgz",
       "integrity": "sha512-5r2GqsoEb4qMTTN9J+WzXfjov+hjxT+j3u5K+kIVNIwAd99DLCJE9pBIMP1qVeybV6JiijL385Oz0DcYxfbOIg=="
     },
+    "call-bind": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/call-bind/-/call-bind-1.0.2.tgz",
+      "integrity": "sha512-7O+FbCihrB5WGbFYesctwmTKae6rOiIzmz1icreWJ+0aA7LJfuqhEso2T9ncpcFtzMQtzXf2QGGueWJGTYsqrA==",
+      "requires": {
+        "function-bind": "^1.1.1",
+        "get-intrinsic": "^1.0.2"
+      }
+    },
     "camelcase": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
@@ -1095,12 +1142,9 @@
       }
     },
     "commander": {
-      "version": "2.8.1",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.8.1.tgz",
-      "integrity": "sha1-Br42f+v9oMMwqh4qBy09yXYkJdQ=",
-      "requires": {
-        "graceful-readlink": ">= 1.0.0"
-      }
+      "version": "2.20.3",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+      "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
     },
     "component-emitter": {
       "version": "1.2.1",
@@ -1142,11 +1186,18 @@
       "integrity": "sha1-wguW2MYXdIqvHBYCF2DNJ/y4y3U="
     },
     "content-disposition": {
-      "version": "0.5.3",
-      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.3.tgz",
-      "integrity": "sha512-ExO0774ikEObIAEV9kDo50o+79VCUdEB6n6lzKgGwupcVeRlhrj3qGAfwq8G6uBJjkqLrhT0qEYFcWng8z1z0g==",
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
+      "integrity": "sha512-FveZTNuGw04cxlAiWbzi6zTAL/lhehaWbTtgluJh4/E95DqMwTmha3KZN1aAWA8cFIhHzMZUvLevkw5Rqk+tSQ==",
       "requires": {
-        "safe-buffer": "5.1.2"
+        "safe-buffer": "5.2.1"
+      },
+      "dependencies": {
+        "safe-buffer": {
+          "version": "5.2.1",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+          "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
+        }
       }
     },
     "content-type": {
@@ -1164,14 +1215,14 @@
       }
     },
     "cookie": {
-      "version": "0.4.0",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.0.tgz",
-      "integrity": "sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg=="
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.5.0.tgz",
+      "integrity": "sha512-YZ3GUyn/o8gfKJlnlX7g7xq4gyO6OSuhGPKaaGssGB2qgDUS0gPgtTvoyZLTt9Ab6dC4hfc9dV5arkvc/OCmrw=="
     },
     "cookie-signature": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
-      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+      "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
     },
     "cookiejar": {
       "version": "2.1.2",
@@ -1185,13 +1236,21 @@
       "dev": true
     },
     "copy-props": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/copy-props/-/copy-props-2.0.4.tgz",
-      "integrity": "sha512-7cjuUME+p+S3HZlbllgsn2CDwS+5eCCX16qBgNC4jgSTf49qR1VKy/Zhl400m0IQXl/bPGEVqncgUUMjrr4s8A==",
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/copy-props/-/copy-props-2.0.5.tgz",
+      "integrity": "sha512-XBlx8HSqrT0ObQwmSzM7WE5k8FxTV75h1DX1Z3n6NhQ/UYYAvInWYmG06vFt7hQZArE2fuO62aihiWIVQwh1sw==",
       "dev": true,
       "requires": {
-        "each-props": "^1.3.0",
-        "is-plain-object": "^2.0.1"
+        "each-props": "^1.3.2",
+        "is-plain-object": "^5.0.0"
+      },
+      "dependencies": {
+        "is-plain-object": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-5.0.0.tgz",
+          "integrity": "sha512-VRSzKkbMm5jMDoKLbltAkFQ5Qr7VDiTFGXxYFXXowVj387GeGNOCsOH6Msy00SGZ3Fp84b1Naa1psqgcCIEP5Q==",
+          "dev": true
+        }
       }
     },
     "core-util-is": {
@@ -1325,9 +1384,9 @@
       "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU="
     },
     "decompress": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/decompress/-/decompress-4.2.0.tgz",
-      "integrity": "sha1-eu3YVCflqS2s/lVnSnxQXpbQH50=",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/decompress/-/decompress-4.2.1.tgz",
+      "integrity": "sha512-e48kc2IjU+2Zw8cTb6VZcJQ3lgVbS4uuB1TfCHbiZIP/haNXm+SVyhu+87jts5/3ROpd82GSVCoNs/z8l4ZOaQ==",
       "requires": {
         "decompress-tar": "^4.0.0",
         "decompress-tarbz2": "^4.0.0",
@@ -1342,7 +1401,7 @@
     "decompress-response": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-3.3.0.tgz",
-      "integrity": "sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=",
+      "integrity": "sha512-BzRPQuY1ip+qDonAOz42gRm/pg9F768C+npV/4JOsxRC2sq+Rlk+Q4ZCAsOhnIaMrgarILY+RMUIvMmmX1qAEA==",
       "requires": {
         "mimic-response": "^1.0.0"
       }
@@ -1389,7 +1448,7 @@
     "decompress-unzip": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/decompress-unzip/-/decompress-unzip-4.0.1.tgz",
-      "integrity": "sha1-3qrM39FK6vhVePczroIQ+bSEj2k=",
+      "integrity": "sha512-1fqeluvxgnn86MOh66u8FjbtJpAFv5wgCT9Iw8rcBqQcCo5tO8eiJw7NNTrvt9n4CRBVq7CstiS922oPgyGLrw==",
       "requires": {
         "file-type": "^3.8.0",
         "get-stream": "^2.2.0",
@@ -1400,12 +1459,12 @@
         "file-type": {
           "version": "3.9.0",
           "resolved": "https://registry.npmjs.org/file-type/-/file-type-3.9.0.tgz",
-          "integrity": "sha1-JXoHg4TR24CHvESdEH1SpSZyuek="
+          "integrity": "sha512-RLoqTXE8/vPmMuTI88DAzhMYC99I8BWv7zYP4A1puo5HIjEJ5EX48ighy4ZyKMG9EDXxBgW6e++cn7d1xuFghA=="
         },
         "get-stream": {
           "version": "2.3.1",
           "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-2.3.1.tgz",
-          "integrity": "sha1-Xzj5PzRgCWZu4BUKBUFn+Rvdld4=",
+          "integrity": "sha512-AUGhbbemXxrZJRD5cDvKtQxLuYaIbNtDTK8YqupCI393Q2KSTreEsLUN3ZxAWFGiKTzL6nKuzfcIvieflUX9qA==",
           "requires": {
             "object-assign": "^4.0.1",
             "pinkie-promise": "^2.0.0"
@@ -1516,9 +1575,9 @@
       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
     },
     "depd": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
-      "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
+      "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw=="
     },
     "deps-sort": {
       "version": "2.0.0",
@@ -1541,9 +1600,9 @@
       }
     },
     "destroy": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
-      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.2.0.tgz",
+      "integrity": "sha512-2sJGJTaXIIaR1w4iJSNoN0hnMY7Gpc/n8D4qSCJw8QqFWXf7cuAgnEHxBpweaVcPevC2l3KpjYCx3NypQQgaJg=="
     },
     "detect-file": {
       "version": "1.0.0",
@@ -1572,9 +1631,9 @@
       }
     },
     "dom-walk": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/dom-walk/-/dom-walk-0.1.1.tgz",
-      "integrity": "sha1-ZyIm3HTI95mtNTB9+TaroRrNYBg="
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/dom-walk/-/dom-walk-0.1.2.tgz",
+      "integrity": "sha512-6QvTW9mrGeIegrFXdtQi9pk7O/nSK6lSdXW2eqUspN5LWD7UTji2Fqw5V2YLjBpHEoU9Xl/eUWNpDeZvoyOv2w=="
     },
     "domain-browser": {
       "version": "1.2.0",
@@ -1589,16 +1648,6 @@
         "webidl-conversions": "^4.0.2"
       }
     },
-    "drbg.js": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/drbg.js/-/drbg.js-1.0.1.tgz",
-      "integrity": "sha1-Pja2xCs3BDgjzbwzLVjzHiRFSAs=",
-      "requires": {
-        "browserify-aes": "^1.0.6",
-        "create-hash": "^1.1.2",
-        "create-hmac": "^1.1.4"
-      }
-    },
     "duplexer2": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
@@ -1610,7 +1659,7 @@
     "duplexer3": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer3/-/duplexer3-0.1.4.tgz",
-      "integrity": "sha1-7gHdHKwO08vH/b6jfcCo8c4ALOI="
+      "integrity": "sha512-CEj8FwwNA4cVH2uFCoHUrmojhYh1vmCdOaneKJXwkeY1i9jnlslVo9dx+hQ5Hl9GnH/Bwy/IjxAyOePyPKYnzA=="
     },
     "duplexify": {
       "version": "3.7.1",
@@ -1646,7 +1695,7 @@
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
-      "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
+      "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="
     },
     "elliptic": {
       "version": "6.4.1",
@@ -1665,7 +1714,7 @@
     "encodeurl": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
-      "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
+      "integrity": "sha512-TPJXq8JqFaVYm2CWmPvnP2Iyo4ZSM7/QKcSmuMLDObfpH5fi7RUGmd/rTDf+rut/saiDiQEeVTNgAmJEdAOx0w=="
     },
     "end-of-stream": {
       "version": "1.4.1",
@@ -1676,9 +1725,9 @@
       }
     },
     "errno": {
-      "version": "0.1.7",
-      "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.7.tgz",
-      "integrity": "sha512-MfrRBDWzIWifgq6tJj60gkAwtLNb6sQPlcFrSOflcP1aFmmruKQ2wRnze/8V6kgyz7H3FF8Npzv78mZ7XLLflg==",
+      "version": "0.1.8",
+      "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.8.tgz",
+      "integrity": "sha512-dJ6oBr5SQ1VSd9qkk7ByRgb/1SH4JZjCHSW/mr63/QcXO9zLVxvJ6Oy13nio03rxpSnVDDjFor75SjVeZWPW/A==",
       "requires": {
         "prr": "~1.0.1"
       }
@@ -1739,7 +1788,7 @@
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
-      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
+      "integrity": "sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow=="
     },
     "escape-string-regexp": {
       "version": "1.0.5",
@@ -1785,12 +1834,12 @@
     "etag": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
-      "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
+      "integrity": "sha512-aIL5Fx7mawVa300al2BnEE4iNvo1qETxLrPI/o05L7z6go7fCw1J6EQmbK4FmJ2AS7kgVF/KEZWufBfdClMcPg=="
     },
     "eth-ens-namehash": {
       "version": "2.0.8",
       "resolved": "https://registry.npmjs.org/eth-ens-namehash/-/eth-ens-namehash-2.0.8.tgz",
-      "integrity": "sha1-IprEbsqG1S4MmR58sq74P/D2i88=",
+      "integrity": "sha512-VWEI1+KJfz4Km//dadyvBBoBeSQ0MHTXPvr8UIXiLW6IanxvAV+DmlZAijZwAyggqGUfwQBeHf7tc9wzc1piSw==",
       "requires": {
         "idna-uts46-hx": "^2.3.1",
         "js-sha3": "^0.5.7"
@@ -1799,32 +1848,92 @@
         "js-sha3": {
           "version": "0.5.7",
           "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.5.7.tgz",
-          "integrity": "sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc="
+          "integrity": "sha512-GII20kjaPX0zJ8wzkTbNDYMY7msuZcTWk8S5UOh6806Jq/wz1J8/bnr8uGU0DAUmYDjj2Mr4X1cW8v/GLYnR+g=="
         }
       }
     },
     "eth-lib": {
       "version": "0.2.7",
       "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.2.7.tgz",
-      "integrity": "sha1-L5Pxex4jrsN1nNSj/iDBKGo/wco=",
+      "integrity": "sha512-VqEBQKH92jNsaE8lG9CTq8M/bc12gdAfb5MY8Ro1hVyXkh7rOtY3m5tRHK3Hus5HqIAAwU2ivcUjTLVwsvf/kw==",
       "requires": {
         "bn.js": "^4.11.6",
         "elliptic": "^6.4.0",
         "xhr-request-promise": "^0.1.2"
       }
     },
+    "ethereum-cryptography": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-0.1.3.tgz",
+      "integrity": "sha512-w8/4x1SGGzc+tO97TASLja6SLd3fRIK2tLVcV2Gx4IB21hE19atll5Cq9o3d0ZmAYC/8aw0ipieTSiekAea4SQ==",
+      "requires": {
+        "@types/pbkdf2": "^3.0.0",
+        "@types/secp256k1": "^4.0.1",
+        "blakejs": "^1.1.0",
+        "browserify-aes": "^1.2.0",
+        "bs58check": "^2.1.2",
+        "create-hash": "^1.2.0",
+        "create-hmac": "^1.1.7",
+        "hash.js": "^1.1.7",
+        "keccak": "^3.0.0",
+        "pbkdf2": "^3.0.17",
+        "randombytes": "^2.1.0",
+        "safe-buffer": "^5.1.2",
+        "scrypt-js": "^3.0.0",
+        "secp256k1": "^4.0.1",
+        "setimmediate": "^1.0.5"
+      },
+      "dependencies": {
+        "randombytes": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
+          "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
+          "requires": {
+            "safe-buffer": "^5.1.0"
+          }
+        }
+      }
+    },
     "ethereumjs-util": {
-      "version": "5.2.0",
-      "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.0.tgz",
-      "integrity": "sha512-CJAKdI0wgMbQFLlLRtZKGcy/L6pzVRgelIZqRqNbuVFM3K9VEnyfbcvz0ncWMRNCe4kaHWjwRYQcYMucmwsnWA==",
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz",
+      "integrity": "sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==",
       "requires": {
         "bn.js": "^4.11.0",
         "create-hash": "^1.1.2",
+        "elliptic": "^6.5.2",
+        "ethereum-cryptography": "^0.1.3",
         "ethjs-util": "^0.1.3",
-        "keccak": "^1.0.2",
         "rlp": "^2.0.0",
-        "safe-buffer": "^5.1.1",
-        "secp256k1": "^3.0.1"
+        "safe-buffer": "^5.1.1"
+      },
+      "dependencies": {
+        "elliptic": {
+          "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": "^4.11.9",
+            "brorand": "^1.1.0",
+            "hash.js": "^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=="
+        }
       }
     },
     "ethers": {
@@ -1844,10 +1953,15 @@
         "xmlhttprequest": "1.8.0"
       },
       "dependencies": {
+        "@types/node": {
+          "version": "10.17.60",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-10.17.60.tgz",
+          "integrity": "sha512-F0KIgDJfy2nA3zMLmWGKxcH2ZVEtCZXHHdOQs2gSaQ27+lNeEfGxzkIw90aXswATX7AZ33tahPbzy6KAfUreVw=="
+        },
         "elliptic": {
           "version": "6.3.3",
           "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz",
-          "integrity": "sha1-VILZZG1UvLif19mU/J4ulWiHbj8=",
+          "integrity": "sha512-cIky9SO2H8W2eU1NOLySnhOYJnuEWCq9ZJeHvHd/lXzEL9vyraIMfilZSn57X3aVX+wkfYmqkch2LvmTzkjFpA==",
           "requires": {
             "bn.js": "^4.4.0",
             "brorand": "^1.0.1",
@@ -1867,24 +1981,29 @@
         "js-sha3": {
           "version": "0.5.7",
           "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.5.7.tgz",
-          "integrity": "sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc="
+          "integrity": "sha512-GII20kjaPX0zJ8wzkTbNDYMY7msuZcTWk8S5UOh6806Jq/wz1J8/bnr8uGU0DAUmYDjj2Mr4X1cW8v/GLYnR+g=="
+        },
+        "scrypt-js": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/scrypt-js/-/scrypt-js-2.0.3.tgz",
+          "integrity": "sha512-d8DzQxNivoNDogyYmb/9RD5mEQE/Q7vG2dLDUgvfPmKL9xCVzgqUntOdS0me9Cq9Sh9VxIZuoNEFcsfyXRnyUw=="
         },
         "setimmediate": {
           "version": "1.0.4",
           "resolved": "https://registry.npmjs.org/setimmediate/-/setimmediate-1.0.4.tgz",
-          "integrity": "sha1-IOgd5iLUoCWIzgyNqJc8vPHTE48="
+          "integrity": "sha512-/TjEmXQVEzdod/FFskf3o7oOAsGhHf2j1dZqRFbDzq4F3mvvxflIIi4Hd3bLQE9y/CpwqfSQam5JakI/mi3Pog=="
         },
         "uuid": {
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
-          "integrity": "sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w="
+          "integrity": "sha512-nWg9+Oa3qD2CQzHIP4qKUqwNfzKn8P0LtFhotaCTFchsV7ZfDhAybeip/HZVeMIpZi9JgY1E3nUlwaCmZT1sEg=="
         }
       }
     },
     "ethjs-unit": {
       "version": "0.1.6",
       "resolved": "https://registry.npmjs.org/ethjs-unit/-/ethjs-unit-0.1.6.tgz",
-      "integrity": "sha1-xmWSHkduh7ziqdWIpv4EBbLEFpk=",
+      "integrity": "sha512-/Sn9Y0oKl0uqQuvgFk/zQgR7aw1g36qX/jzSQ5lSwlO0GigPymk4eGQfeNTD03w1dPOqfz8V77Cy43jH56pagw==",
       "requires": {
         "bn.js": "4.11.6",
         "number-to-bn": "1.7.0"
@@ -1893,7 +2012,7 @@
         "bn.js": {
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
-          "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU="
+          "integrity": "sha512-XWwnNNFCuuSQ0m3r3C4LE3EiORltHd9M05pq6FOlVeiophzRbMo50Sbz1ehl8K3Z+jw9+vmgnXefY1hz8X+2wA=="
         }
       }
     },
@@ -1909,7 +2028,7 @@
     "eventemitter3": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-1.1.1.tgz",
-      "integrity": "sha1-R3hr2qCHyvext15zq8XH1UAVjNA="
+      "integrity": "sha512-idmH3G0vJjQv2a5N74b+oXcOUKYBqSGJGN1eVV6ELGdUnesAO8RZsU74eaS3VfldRet8N9pFupxppBUKztrBdQ=="
     },
     "events": {
       "version": "2.1.0",
@@ -1970,46 +2089,55 @@
       }
     },
     "express": {
-      "version": "4.17.1",
-      "resolved": "https://registry.npmjs.org/express/-/express-4.17.1.tgz",
-      "integrity": "sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==",
+      "version": "4.18.1",
+      "resolved": "https://registry.npmjs.org/express/-/express-4.18.1.tgz",
+      "integrity": "sha512-zZBcOX9TfehHQhtupq57OF8lFZ3UZi08Y97dwFCkD8p9d/d2Y3M+ykKcwaMDEL+4qyUolgBDX6AblpR3fL212Q==",
       "requires": {
-        "accepts": "~1.3.7",
+        "accepts": "~1.3.8",
         "array-flatten": "1.1.1",
-        "body-parser": "1.19.0",
-        "content-disposition": "0.5.3",
+        "body-parser": "1.20.0",
+        "content-disposition": "0.5.4",
         "content-type": "~1.0.4",
-        "cookie": "0.4.0",
+        "cookie": "0.5.0",
         "cookie-signature": "1.0.6",
         "debug": "2.6.9",
-        "depd": "~1.1.2",
+        "depd": "2.0.0",
         "encodeurl": "~1.0.2",
         "escape-html": "~1.0.3",
         "etag": "~1.8.1",
-        "finalhandler": "~1.1.2",
+        "finalhandler": "1.2.0",
         "fresh": "0.5.2",
+        "http-errors": "2.0.0",
         "merge-descriptors": "1.0.1",
         "methods": "~1.1.2",
-        "on-finished": "~2.3.0",
+        "on-finished": "2.4.1",
         "parseurl": "~1.3.3",
         "path-to-regexp": "0.1.7",
-        "proxy-addr": "~2.0.5",
-        "qs": "6.7.0",
+        "proxy-addr": "~2.0.7",
+        "qs": "6.10.3",
         "range-parser": "~1.2.1",
-        "safe-buffer": "5.1.2",
-        "send": "0.17.1",
-        "serve-static": "1.14.1",
-        "setprototypeof": "1.1.1",
-        "statuses": "~1.5.0",
+        "safe-buffer": "5.2.1",
+        "send": "0.18.0",
+        "serve-static": "1.15.0",
+        "setprototypeof": "1.2.0",
+        "statuses": "2.0.1",
         "type-is": "~1.6.18",
         "utils-merge": "1.0.1",
         "vary": "~1.1.2"
       },
       "dependencies": {
         "qs": {
-          "version": "6.7.0",
-          "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
-          "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ=="
+          "version": "6.10.3",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.10.3.tgz",
+          "integrity": "sha512-wr7M2E0OFRfIfJZjKGieI8lBKb7fRCH4Fv5KNPEs7gJ8jadvotdsS08PzOKR7opXhZ/Xkjtt3WF9g38drmyRqQ==",
+          "requires": {
+            "side-channel": "^1.0.4"
+          }
+        },
+        "safe-buffer": {
+          "version": "5.2.1",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+          "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
         }
       }
     },
@@ -2131,7 +2259,7 @@
     "fd-slicer": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz",
-      "integrity": "sha1-JcfInLH5B3+IkbvmHY85Dq4lbx4=",
+      "integrity": "sha512-cE1qsB/VwyQozZ+q1dGxR8LBYNZeofhEdUNGSMbQD3Gw2lAzX9Zb3uIU6Ebc/Fmyjo9AWWfnn0AUCHqtevs/8g==",
       "requires": {
         "pend": "~1.2.0"
       }
@@ -2144,12 +2272,7 @@
     "file-type": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/file-type/-/file-type-5.2.0.tgz",
-      "integrity": "sha1-LdvqfHP/42No365J3DOMBYwritY="
-    },
-    "file-uri-to-path": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
-      "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw=="
+      "integrity": "sha512-Iq1nJ6D2+yIO4c8HHg4fyVb8mAJieo1Oloy1mLLaB2PvezNedhBVm+QU7g0qM42aiMbRXTxKKwGD17rjKNJYVQ=="
     },
     "fill-range": {
       "version": "4.0.0",
@@ -2175,16 +2298,16 @@
       }
     },
     "finalhandler": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
-      "integrity": "sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.2.0.tgz",
+      "integrity": "sha512-5uXcUVftlQMFnWC9qu/svkWv3GTd2PfUhK/3PLkYNAe7FbqJMt3515HaxE6eRL74GdsriiwujiawdaB1BpEISg==",
       "requires": {
         "debug": "2.6.9",
         "encodeurl": "~1.0.2",
         "escape-html": "~1.0.3",
-        "on-finished": "~2.3.0",
+        "on-finished": "2.4.1",
         "parseurl": "~1.3.3",
-        "statuses": "~1.5.0",
+        "statuses": "2.0.1",
         "unpipe": "~1.0.0"
       }
     },
@@ -2305,9 +2428,9 @@
       "integrity": "sha512-Fs9VRguL0gqGHkXS5GQiMCr1VhZBxz0JnJs4JmMp/2jL18Fmbzvv7vOFRU+U8TBkHEE/CX1qDXzJplVULgsLeg=="
     },
     "forwarded": {
-      "version": "0.1.2",
-      "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
-      "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz",
+      "integrity": "sha512-buRG0fpBtRHSTCOASe6hD258tEubFoRLb4ZNA6NxMVHNw2gOcwHo9wyablzMzOA5z9xA9L1KNjk/Nt6MT9aYow=="
     },
     "fragment-cache": {
       "version": "0.2.1",
@@ -2321,7 +2444,7 @@
     "fresh": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/fresh/-/fresh-0.5.2.tgz",
-      "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
+      "integrity": "sha512-zJ2mQYM18rEFOudeV4GShTGIQ7RbzA7ozbU9I/XBpm7kqgMywgmylMwXHxZJmkVoYkna9d2pVXVXPdYTP9ej8Q=="
     },
     "fs-constants": {
       "version": "1.0.0",
@@ -2331,7 +2454,7 @@
     "fs-extra": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-2.1.2.tgz",
-      "integrity": "sha1-BGxwFjzvmq1GsOSn+kZ/si1x3jU=",
+      "integrity": "sha512-9ztMtDZtSKC78V8mev+k31qaTabbmuH5jatdvPBMikrFHvw5BqlYnQIn/WGK3WHeRooSTkRvLa2IPlaHjPq5Sg==",
       "requires": {
         "graceful-fs": "^4.1.2",
         "jsonfile": "^2.1.0"
@@ -2350,7 +2473,7 @@
     "fs-promise": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/fs-promise/-/fs-promise-2.0.3.tgz",
-      "integrity": "sha1-9k5PhUvPaJqovdy6JokW2z20aFQ=",
+      "integrity": "sha512-oDrTLBQAcRd+p/tSRWvqitKegLPsvqr7aehs5N9ILWFM9az5y5Uh71jKdZ/DTMC4Kel7+GNCQyFCx/IftRv8yg==",
       "requires": {
         "any-promise": "^1.3.0",
         "fs-extra": "^2.0.0",
@@ -2930,7 +3053,7 @@
     "functional-red-black-tree": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz",
-      "integrity": "sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc="
+      "integrity": "sha512-dsKNQNdj6xA3T+QlADDA7mOSlX0qiMINjn0cgr+eGHGsbSHzTabcIogz2+p/iqP1Xs6EP/sS2SbqH+brGTbq0g=="
     },
     "get-assigned-identifiers": {
       "version": "1.2.0",
@@ -2943,10 +3066,27 @@
       "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
       "dev": true
     },
+    "get-intrinsic": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.1.2.tgz",
+      "integrity": "sha512-Jfm3OyCxHh9DJyc28qGk+JmfkpO41A4XkneDSujN9MDXrm4oDKdHvndhZ2dN94+ERNfkYJWDclW6k2L/ZGHjXA==",
+      "requires": {
+        "function-bind": "^1.1.1",
+        "has": "^1.0.3",
+        "has-symbols": "^1.0.3"
+      },
+      "dependencies": {
+        "has-symbols": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.3.tgz",
+          "integrity": "sha512-l3LCuF6MgDNwTDKkdYGEihYjt5pRPbEg46rtlmnSPlUbgmB8LOIrKJbYYFBSbnPaJexMKtiPO8hmeRjRz2Td+A=="
+        }
+      }
+    },
     "get-stream": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
-      "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ="
+      "integrity": "sha512-GlhdIUuVakc8SJ6kK0zAFbiGzRFzNnY4jUuEbV9UROo4Y+0Ny4fjvcZFVTeDA4odpFyOQzaw6hXukJSq/f28sQ=="
     },
     "get-value": {
       "version": "2.0.6",
@@ -3029,19 +3169,12 @@
       }
     },
     "global": {
-      "version": "4.3.2",
-      "resolved": "https://registry.npmjs.org/global/-/global-4.3.2.tgz",
-      "integrity": "sha1-52mJJopsdMOJCLEwWxD8DjlOnQ8=",
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/global/-/global-4.4.0.tgz",
+      "integrity": "sha512-wv/LAoHdRE3BeTGz53FAamhGlPLhlssK45usmGFThIi4XqnBmjKQ16u+RNbP7WvigRZDxUsM0J3gcQ5yicaL0w==",
       "requires": {
         "min-document": "^2.19.0",
-        "process": "~0.5.1"
-      },
-      "dependencies": {
-        "process": {
-          "version": "0.5.2",
-          "resolved": "https://registry.npmjs.org/process/-/process-0.5.2.tgz",
-          "integrity": "sha1-FjjYqONML0QKkduVq5rrZ3/Bhc8="
-        }
+        "process": "^0.11.10"
       }
     },
     "global-modules": {
@@ -3103,11 +3236,6 @@
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.15.tgz",
       "integrity": "sha512-6uHUhOPEBgQ24HM+r6b/QwWfZq+yiFcipKFrOFiBEnWdy5sdzYoi+pJeQaPI5qOLRFqWmAXUPQNsielzdLoecA=="
     },
-    "graceful-readlink": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/graceful-readlink/-/graceful-readlink-1.0.1.tgz",
-      "integrity": "sha1-TK+tdrxi8C+gObL5Tpo906ORpyU="
-    },
     "growly": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/growly/-/growly-1.3.0.tgz",
@@ -3310,19 +3438,20 @@
       }
     },
     "helios-utils": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/helios-utils/-/helios-utils-0.1.0.tgz",
-      "integrity": "sha512-pOBHRlBqGQyyguBaEf1h9rvrF9ziWmG/PV2C7u+HHY11RbJoN6JEMR+NGlZTHEd3HsUjdT7gjoz6+FndpHbonw==",
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/helios-utils/-/helios-utils-0.1.1.tgz",
+      "integrity": "sha512-5d989Ww+VM9KBcbqGC309zeKXtn81XBd53NiyqRIkLPnc/SmLKvk4yMJO0qX3IryZLBRF/b0iqOM9HDKKLDj5g==",
       "requires": {
+        "await-lock": "^2.0.1",
         "bcryptjs": "^2.4.3",
         "superagent": "^4.1.0",
         "superagent-no-cache": "^0.1.1"
       }
     },
     "helios-web3": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/helios-web3/-/helios-web3-0.1.0.tgz",
-      "integrity": "sha512-1UEDhCfmjg0dXHbUll8p867ibvG8Q44bnVqvx/hxIyAlt7AXn2ECh5aFYSBztP/SAjMS6MeInQcdFotwJo6ZYA==",
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/helios-web3/-/helios-web3-0.1.1.tgz",
+      "integrity": "sha512-tfeJmxvvM2h/DOLSnGAwIgJ7x1pBXcE/6deBNVMtZrZfx7rETi6yuXvrIMvDRJNByo4zlEM443j0mX8HPFNI8Q==",
       "requires": {
         "any-promise": "^1.3.0",
         "browserify": "^16.2.3",
@@ -3371,21 +3500,28 @@
       "integrity": "sha1-OgPtwiFLyjtmQko+eVk0lQnLA1E="
     },
     "http-errors": {
-      "version": "1.7.2",
-      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.2.tgz",
-      "integrity": "sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==",
-      "requires": {
-        "depd": "~1.1.2",
-        "inherits": "2.0.3",
-        "setprototypeof": "1.1.1",
-        "statuses": ">= 1.5.0 < 2",
-        "toidentifier": "1.0.0"
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-2.0.0.tgz",
+      "integrity": "sha512-FtwrG/euBzaEjYeRqOgly7G0qviiXoJWnvEH2Z1plBdXgbyjv34pHTSb9zoeHMyDy33+DWy5Wt9Wo+TURtOYSQ==",
+      "requires": {
+        "depd": "2.0.0",
+        "inherits": "2.0.4",
+        "setprototypeof": "1.2.0",
+        "statuses": "2.0.1",
+        "toidentifier": "1.0.1"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        }
       }
     },
     "http-https": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/http-https/-/http-https-1.0.0.tgz",
-      "integrity": "sha1-L5CN1fHbQGjAWM1ubUzjkskTOJs="
+      "integrity": "sha512-o0PWwVCSp3O0wS6FvNr6xfBCHgt0m1tvPLFOCc2iFDKTRAXhB7m8klDf7ErowFH8POa6dVdGatKU5I1YYwzUyg=="
     },
     "http-signature": {
       "version": "1.2.0",
@@ -3421,7 +3557,7 @@
         "punycode": {
           "version": "2.1.0",
           "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.0.tgz",
-          "integrity": "sha1-X4Y+3Im5bbCQdLrXlHvwkFbKTn0="
+          "integrity": "sha512-Yxz2kRwT90aPiWEMHVYnEf4+rhwF1tBmmZ4KepCP+Wkium9JxtWnUm1nqGwpiAHr/tnTSeHqr3wb++jgSkXjhA=="
         }
       }
     },
@@ -3431,9 +3567,9 @@
       "integrity": "sha512-GguP+DRY+pJ3soyIiGPTvdiVXjZ+DbXOxGpXn3eMvNW4x4irjqXm4wHKscC+TfxSJ0yw/S1F24tqdMNsMZTiLA=="
     },
     "immediate": {
-      "version": "3.2.3",
-      "resolved": "https://registry.npmjs.org/immediate/-/immediate-3.2.3.tgz",
-      "integrity": "sha1-0UD6j2FGWb1lQSMwl92qwlzdmRw="
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/immediate/-/immediate-3.3.0.tgz",
+      "integrity": "sha512-HR7EVodfFUdQCTIeySw+WDRFJlPcLOJbXfwwZ7Oom6tjsvZ3bOkCDJHehQC3nxJrv7+f9XecwazynjU8e4Vw3Q=="
     },
     "inflight": {
       "version": "1.0.6",
@@ -3493,9 +3629,9 @@
       "dev": true
     },
     "ipaddr.js": {
-      "version": "1.9.0",
-      "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.0.tgz",
-      "integrity": "sha512-M4Sjn6N/+O6/IXSJseKqHoFc+5FdGJ22sXqnjTpdZweHK64MzEPAyQZyEU3R/KRv2GLoa7nNtg/C2Ev6m7z+eA=="
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
+      "integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="
     },
     "is": {
       "version": "3.3.0",
@@ -3613,9 +3749,9 @@
       }
     },
     "is-function": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/is-function/-/is-function-1.0.1.tgz",
-      "integrity": "sha1-Es+5i2W1fdPRk6MSH19uL0N2ArU="
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/is-function/-/is-function-1.0.2.tgz",
+      "integrity": "sha512-lw7DUp0aWXYg+CBCN+JKkcE0Q2RayZnSvnZBlwgxHBQhqt5pZNVy4Ri7H9GmmXkdu7LUthszM+Tor1u/2iBcpQ=="
     },
     "is-glob": {
       "version": "4.0.0",
@@ -3629,12 +3765,12 @@
     "is-hex-prefixed": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-hex-prefixed/-/is-hex-prefixed-1.0.0.tgz",
-      "integrity": "sha1-fY035q135dEnFIkTxXPggtd39VQ="
+      "integrity": "sha512-WvtOiug1VFrE9v1Cydwm+FnXd3+w9GaeVUss5W4v/SLy3UW00vP+6iNF2SdnfiBoLy4bTqVdkftNGTUeOFVsbA=="
     },
     "is-natural-number": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/is-natural-number/-/is-natural-number-4.0.1.tgz",
-      "integrity": "sha1-q5124dtM7VHjXeDHLr7PCfc0zeg="
+      "integrity": "sha512-Y4LTamMe0DDQIIAlaer9eKebAlDSV6huy+TWhJVPlzZh2o4tRP5SQWFlLn5N0To4mDD22/qdOq+veo1cSISLgQ=="
     },
     "is-negated-glob": {
       "version": "1.0.0",
@@ -3663,14 +3799,14 @@
       }
     },
     "is-object": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/is-object/-/is-object-1.0.1.tgz",
-      "integrity": "sha1-iVJojF7C/9awPsyF52ngKQMINHA="
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/is-object/-/is-object-1.0.2.tgz",
+      "integrity": "sha512-2rRIahhZr2UWb45fIOuvZGpFtz0TyOZLf32KxBbSoUCeZR495zCKlWUKKUByk3geS2eAs7ZAABt0Y/Rx0GiQGA=="
     },
     "is-plain-obj": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/is-plain-obj/-/is-plain-obj-1.1.0.tgz",
-      "integrity": "sha1-caUMhCnfync8kqOQpKA7OfzVHT4="
+      "integrity": "sha512-yvkRyxmFKEOQ4pNXCmJG5AEQNlXJS5LaONXo5/cLdTZdWvsZ1ioJEonLGAosKlMWE8lwUy/bJzMjcw8az73+Fg=="
     },
     "is-plain-object": {
       "version": "2.0.4",
@@ -3698,7 +3834,7 @@
     "is-stream": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz",
-      "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ="
+      "integrity": "sha512-uQPm8kcs47jx38atAcWTVxyltQYoPT68y9aWYdV6yWXSyW8mzSat0TL6CiWdZeCdF3KrAvpVtnHbTv4RN+rqdQ=="
     },
     "is-typedarray": {
       "version": "1.0.0",
@@ -3775,7 +3911,7 @@
     "js-sha3": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.6.1.tgz",
-      "integrity": "sha1-W4n3enR3Z5h39YxKB1JAk0sflcA="
+      "integrity": "sha512-2OHj7sAZ9gnJS4lQsgIsTslmqVrNQdDC99bvwYGQKU1w6k/gwsTLeGBfWt8yHCuTOGqk7DXzuVlK8J+dDXnG7A=="
     },
     "jsbn": {
       "version": "0.1.1",
@@ -3863,7 +3999,7 @@
     "jsonfile": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz",
-      "integrity": "sha1-NzaitCi4e72gzIO1P6PWM6NcKug=",
+      "integrity": "sha512-PKllAqbgLgxHaj8TElYymKCAgrASebJrWpTnEkOaTowt23VKXXN0sUeriJ+eh7y6ufb/CC5ap11pz71/cM0hUw==",
       "requires": {
         "graceful-fs": "^4.1.6"
       }
@@ -3896,14 +4032,25 @@
       "dev": true
     },
     "keccak": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/keccak/-/keccak-1.4.0.tgz",
-      "integrity": "sha512-eZVaCpblK5formjPjeTBik7TAg+pqnDrMHIffSvi9Lh7PQgM1+hSzakUeZFCk9DVVG0dacZJuaz2ntwlzZUIBw==",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/keccak/-/keccak-3.0.2.tgz",
+      "integrity": "sha512-PyKKjkH53wDMLGrvmRGSNWgmSxZOUqbnXwKL9tmgbFYA1iAYqW21kfR7mZXV0MlESiefxQQE9X9fTa3X+2MPDQ==",
       "requires": {
-        "bindings": "^1.2.1",
-        "inherits": "^2.0.3",
-        "nan": "^2.2.1",
-        "safe-buffer": "^5.1.0"
+        "node-addon-api": "^2.0.0",
+        "node-gyp-build": "^4.2.0",
+        "readable-stream": "^3.6.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
       }
     },
     "keccakjs": {
@@ -3990,7 +4137,7 @@
     "level-iterator-stream": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/level-iterator-stream/-/level-iterator-stream-1.3.1.tgz",
-      "integrity": "sha1-5Dt4sagUPm+pek9IXrjqUwNS8u0=",
+      "integrity": "sha512-1qua0RHNtr4nrZBgYlpV0qHHeHpcRRWTxEZJ8xsemoHAXNL5tbooh4tPEEqIqsbWCAJBmUmkwYK/sW5OrFjWWw==",
       "requires": {
         "inherits": "^2.0.1",
         "level-errors": "^1.0.3",
@@ -4001,12 +4148,12 @@
         "isarray": {
           "version": "0.0.1",
           "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
-          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8="
+          "integrity": "sha512-D2S+3GLxWH+uhrNEcoh/fnmYeP8E8/zHl644d/jdA0g2uyXvy3sb0qxotE+ne0LtccHknQzWwZEzhak7oJ0COQ=="
         },
         "readable-stream": {
           "version": "1.1.14",
           "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
-          "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
+          "integrity": "sha512-+MeVjFf4L44XUkhM1eYbD8fyEsxcV81pqMSR5gblfcLCHfZvbrqy4/qYHE+/R5HoBUT11WV5O08Cr1n3YXkWVQ==",
           "requires": {
             "core-util-is": "~1.0.0",
             "inherits": "~2.0.1",
@@ -4017,14 +4164,14 @@
         "string_decoder": {
           "version": "0.10.31",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+          "integrity": "sha512-ev2QzSzWPYmy9GuqfIVildA4OdcGLeFZQrq5ys6RtiuF+RQQiZWr8TZNyAcuVXyQRYfEO+MsoB/1BuQVhOJuoQ=="
         }
       }
     },
     "level-ws": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/level-ws/-/level-ws-0.0.0.tgz",
-      "integrity": "sha1-Ny5RIXeSSgBCSwtDrvK7QkltIos=",
+      "integrity": "sha512-XUTaO/+Db51Uiyp/t7fCMGVFOTdtLS/NIACxE/GHsij15mKzxksZifKVjlXDF41JMUP/oM1Oc4YNGdKnc3dVLw==",
       "requires": {
         "readable-stream": "~1.0.15",
         "xtend": "~2.1.1"
@@ -4033,17 +4180,17 @@
         "isarray": {
           "version": "0.0.1",
           "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
-          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8="
+          "integrity": "sha512-D2S+3GLxWH+uhrNEcoh/fnmYeP8E8/zHl644d/jdA0g2uyXvy3sb0qxotE+ne0LtccHknQzWwZEzhak7oJ0COQ=="
         },
         "object-keys": {
           "version": "0.4.0",
           "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-0.4.0.tgz",
-          "integrity": "sha1-KKaq50KN0sOpLz2V8hM13SBOAzY="
+          "integrity": "sha512-ncrLw+X55z7bkl5PnUvHwFK9FcGuFYo9gtjws2XtSzL+aZ8tm830P60WJ0dSmFVaSalWieW5MD7kEdnXda9yJw=="
         },
         "readable-stream": {
           "version": "1.0.34",
           "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
-          "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
+          "integrity": "sha512-ok1qVCJuRkNmvebYikljxJA/UEsKwLl2nI1OmaqAu4/UE+h0wKCHok4XkL/gvi39OacXvw59RJUOFUkDib2rHg==",
           "requires": {
             "core-util-is": "~1.0.0",
             "inherits": "~2.0.1",
@@ -4054,12 +4201,12 @@
         "string_decoder": {
           "version": "0.10.31",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+          "integrity": "sha512-ev2QzSzWPYmy9GuqfIVildA4OdcGLeFZQrq5ys6RtiuF+RQQiZWr8TZNyAcuVXyQRYfEO+MsoB/1BuQVhOJuoQ=="
         },
         "xtend": {
           "version": "2.1.2",
           "resolved": "https://registry.npmjs.org/xtend/-/xtend-2.1.2.tgz",
-          "integrity": "sha1-bv7MKk2tjmlixJAbM3znuoe10os=",
+          "integrity": "sha512-vMNKzr2rHP9Dp/e1NQFnLQlwlhp9L/LfvnsVdHxN1f+uggyVI3i08uD14GPvCToPkdsRfyPqIyYGmIk58V98ZQ==",
           "requires": {
             "object-keys": "~0.4.0"
           }
@@ -4170,7 +4317,7 @@
     "ltgt": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/ltgt/-/ltgt-2.2.1.tgz",
-      "integrity": "sha1-81ypHEk/e3PaDgdJUwTxezH4fuU="
+      "integrity": "sha512-AI2r85+4MquTw9ZYqabu4nMwy9Oftlfa/e/52t9IjtfG+mGBbTNdAoZ3RQKLHR6r0wQnwZnPIEh/Ya6XTWAKNA=="
     },
     "make-dir": {
       "version": "1.3.0",
@@ -4183,7 +4330,7 @@
         "pify": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
-          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+          "integrity": "sha512-C3FsVNH1udSEX48gGX1xfvwTWfsYWj5U+8/uK15BGzIGrKoUpghX8hWZwa/OFnakBiiVNmBvemTJR5mcy7iPcg=="
         }
       }
     },
@@ -4244,12 +4391,12 @@
     "media-typer": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
-      "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
+      "integrity": "sha512-dq+qelQ9akHpcOl/gUVRTxVIOkAJ1wR3QAvb4RsVjS8oVoFjDGTc679wJYmUmknUF5HwMLOgb5O+a3KxfWapPQ=="
     },
     "memdown": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/memdown/-/memdown-1.4.1.tgz",
-      "integrity": "sha1-tOThkhdGZP+65BNhqlAPMRnv4hU=",
+      "integrity": "sha512-iVrGHZB8i4OQfM155xx8akvG9FIj+ht14DX5CQkCTG4EHzZ3d3sgckIf/Lm9ivZalEsFuEVnWv2B2WZvbrro2w==",
       "requires": {
         "abstract-leveldown": "~2.7.1",
         "functional-red-black-tree": "^1.0.1",
@@ -4272,7 +4419,7 @@
     "merge-descriptors": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
-      "integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E="
+      "integrity": "sha512-cCi6g3/Zr1iqQi6ySbseM1Xvooa98N0w31jzUYrXPX2xqObmFGHJ0tQ5u74H3mVh7wLouTseZyYIq39g8cNp1w=="
     },
     "merkle-patricia-tree": {
       "version": "2.3.2",
@@ -4383,7 +4530,7 @@
     "min-document": {
       "version": "2.19.0",
       "resolved": "https://registry.npmjs.org/min-document/-/min-document-2.19.0.tgz",
-      "integrity": "sha1-e9KC4/WELtKVu3SM3Z8f+iyCRoU=",
+      "integrity": "sha512-9Wy1B3m3f66bPPmU5hdA4DR4PB2OfDU/+GS3yAB7IQozE3tqXaVv2zOjgla7MEGSRv95+ILmOuvhLkOK6wJtCQ==",
       "requires": {
         "dom-walk": "^0.1.0"
       }
@@ -4450,15 +4597,15 @@
     "mkdirp-promise": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/mkdirp-promise/-/mkdirp-promise-5.0.1.tgz",
-      "integrity": "sha1-6bj2jlUsaKnBcTuEiD96HdA5uKE=",
+      "integrity": "sha512-Hepn5kb1lJPtVW84RFT40YG1OddBNTOVUZR2bzQUHc+Z03en8/3uX0+060JDhcEzyO08HmipsN9DcnFMxhIL9w==",
       "requires": {
         "mkdirp": "*"
       }
     },
     "mock-fs": {
-      "version": "4.10.3",
-      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-4.10.3.tgz",
-      "integrity": "sha512-bcukePBvuA3qovmq0Qtqu9+1APCIGkFHnsozrPIVromt5XFGGgkQSfaN0H6RI8gStHkO/hRgimvS3tooNes4pQ=="
+      "version": "4.14.0",
+      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-4.14.0.tgz",
+      "integrity": "sha512-qYvlv/exQ4+svI3UOvPUpLDF0OMX5euvUH0Ny4N5QyRyhNdgAgUrVH3iUINSzEPLvx0kbo/Bp28GJKIqvE7URw=="
     },
     "module-deps": {
       "version": "6.2.0",
@@ -4485,7 +4632,7 @@
     "mout": {
       "version": "0.11.1",
       "resolved": "https://registry.npmjs.org/mout/-/mout-0.11.1.tgz",
-      "integrity": "sha1-ujYR318OWx/7/QEWa48C0fX6K5k="
+      "integrity": "sha512-pK9VNiLE3QgGBrC/3ICAscwOLU7oTNeK2l32uqNAioBYtB2tQAfSsGDNChUlk7CP23126mc5lUt6+na9FlN8JA=="
     },
     "ms": {
       "version": "2.0.0",
@@ -4516,7 +4663,7 @@
     "nano-json-stream-parser": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/nano-json-stream-parser/-/nano-json-stream-parser-0.1.2.tgz",
-      "integrity": "sha1-DMj20OK2IrR5xA1JnEbWS3Vcb18="
+      "integrity": "sha512-9MqxMH/BSJC7dnLsEMPyfN5Dvoo49IsPFYMcHw3Bcfc2kN0lpHRBSzlMSVx4HGyJ7s9B31CyBTVehWJoQ8Ctew=="
     },
     "nanomatch": {
       "version": "1.2.13",
@@ -4571,9 +4718,9 @@
       }
     },
     "negotiator": {
-      "version": "0.6.2",
-      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
-      "integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw=="
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
+      "integrity": "sha512-+EUsqGPLsM+j/zdChZjsnX51g4XrHFOIXwfnCVPGlQk/k5giakcKsuxCObBRu6DSm9opw/O6slWbJdghQM4bBg=="
     },
     "next-tick": {
       "version": "1.0.0",
@@ -4581,6 +4728,16 @@
       "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw=",
       "dev": true
     },
+    "node-addon-api": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-2.0.2.tgz",
+      "integrity": "sha512-Ntyt4AIXyaLIuMHF6IOoTakB3K+RWxwtsHNRxllEoA6vPwP9o4866g6YWDLUdnucilZhmkxiHwHr11gAENw+QA=="
+    },
+    "node-gyp-build": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.4.0.tgz",
+      "integrity": "sha512-amJnQCcgtRVw9SvoebO3BKGESClrfXGCUTX9hSn1OuGQTQBOZmVd0Z0OlecpuRksKvbsUqALE8jls/ErClAPuQ=="
+    },
     "node-notifier": {
       "version": "5.4.0",
       "resolved": "https://registry.npmjs.org/node-notifier/-/node-notifier-5.4.0.tgz",
@@ -4641,7 +4798,7 @@
     "number-to-bn": {
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/number-to-bn/-/number-to-bn-1.7.0.tgz",
-      "integrity": "sha1-uzYjWS9+X54AMLGXe9QaDFP+HqA=",
+      "integrity": "sha512-wsJ9gfSz1/s4ZsJN01lyonwuxA1tml6X1yBDnfpMglypcBRFZZkus26EdPSlqS5GJfYddVZa22p3VNb3z5m5Ig==",
       "requires": {
         "bn.js": "4.11.6",
         "strip-hex-prefix": "1.0.0"
@@ -4650,7 +4807,7 @@
         "bn.js": {
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
-          "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU="
+          "integrity": "sha512-XWwnNNFCuuSQ0m3r3C4LE3EiORltHd9M05pq6FOlVeiophzRbMo50Sbz1ehl8K3Z+jw9+vmgnXefY1hz8X+2wA=="
         }
       }
     },
@@ -4667,7 +4824,7 @@
     "object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
-      "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM="
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg=="
     },
     "object-copy": {
       "version": "0.1.0",
@@ -4700,6 +4857,11 @@
         }
       }
     },
+    "object-inspect": {
+      "version": "1.12.2",
+      "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.12.2.tgz",
+      "integrity": "sha512-z+cPxW0QGUp0mcqcsgQyLVRDoXFQbXOwBaqyF7VIgI4TWNQsDHrBpUQslRmIfAoYWdYzs6UlKJtB2XJpTaNSpQ=="
+    },
     "object-keys": {
       "version": "1.0.12",
       "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.0.12.tgz",
@@ -4779,15 +4941,15 @@
     "oboe": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/oboe/-/oboe-2.1.3.tgz",
-      "integrity": "sha1-K0hl29Rr6BIlcT9Om/5Lz09oCk8=",
+      "integrity": "sha512-LoIaLa//jdUS3tKDfshPNCv+18WDnrUfgMADZlnKD0WeMzt9Utf44DnyBzi5SEL/hq7VSfb41OSZ1/lysMjf1g==",
       "requires": {
         "http-https": "^1.0.0"
       }
     },
     "on-finished": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.3.0.tgz",
-      "integrity": "sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=",
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.4.1.tgz",
+      "integrity": "sha512-oVlzkg3ENAhCk2zdv7IJwd/QUD4z2RxRwpkcGY8psCVcCYZNq4wYnVWALHM+brtuJjePWiYF/ClmuDr8Ch5+kg==",
       "requires": {
         "ee-first": "1.1.1"
       }
@@ -4844,12 +5006,12 @@
     "p-finally": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/p-finally/-/p-finally-1.0.0.tgz",
-      "integrity": "sha1-P7z7FbiZpEEjs0ttzBi3JDNqLK4="
+      "integrity": "sha512-LICb2p9CB7FS+0eR1oqWnHhp0FljGLZCWBE9aix0Uye9W8LTQPwMTYVGWQWIw9RdQiDg4+epXQODwIYJtSJaow=="
     },
     "p-timeout": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/p-timeout/-/p-timeout-1.2.1.tgz",
-      "integrity": "sha1-XrOzU7f86Z8QGhA4iAuwVOu+o4Y=",
+      "integrity": "sha512-gb0ryzr+K2qFqFv6qi3khoeqMZF/+ajxQipEF6NteZVnvz9tzdsfAVj3lYtn1gAXvH5lfLwfxEII799gt/mRIA==",
       "requires": {
         "p-finally": "^1.0.0"
       }
@@ -4892,9 +5054,9 @@
       }
     },
     "parse-headers": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/parse-headers/-/parse-headers-2.0.3.tgz",
-      "integrity": "sha512-QhhZ+DCCit2Coi2vmAKbq5RGTRcQUOE2+REgv8vdyu7MnYx2eZztegqtTx99TZ86GTIwqiy3+4nQTWZ2tgmdCA=="
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/parse-headers/-/parse-headers-2.0.5.tgz",
+      "integrity": "sha512-ft3iAoLOB/MlwbNXgzy43SWGP6sQki2jQvAyBg/zDFAgr9bfNWZIUj42Kw2eJIl8kEi4PbgE6U1Zau/HwI75HA=="
     },
     "parse-json": {
       "version": "2.2.0",
@@ -4985,7 +5147,7 @@
     "path-to-regexp": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
-      "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
+      "integrity": "sha512-5DFkuoqlv1uYQKxy8omFBeJPQcdoE07Kv2sferDCrAq1ohOU+MSDswDIbnx3YAM60qIOnYa53wBhXW0EbMonrQ=="
     },
     "path-type": {
       "version": "1.1.0",
@@ -5013,7 +5175,7 @@
     "pend": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/pend/-/pend-1.2.0.tgz",
-      "integrity": "sha1-elfrVQpng/kRUzH89GY9XI4AelA="
+      "integrity": "sha512-F3asv42UuXchdzt+xXqfW1OGlVBe+mxa2mqI0pg5yAHZPvFmY3Y6drSf/GQ1A86WgWEN9Kzh/WrgKa6iGcHXLg=="
     },
     "performance-now": {
       "version": "2.1.0",
@@ -5069,7 +5231,7 @@
     "prepend-http": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-1.0.4.tgz",
-      "integrity": "sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw="
+      "integrity": "sha512-PhmXi5XmoyKw1Un4E+opM2KcsJInDvKyuOumcjjw3waw86ZNjHwVUOOWLc4bCzLdcKNaWBH9e99sbWzDQsVaYg=="
     },
     "pretty-hrtime": {
       "version": "1.0.3",
@@ -5088,18 +5250,18 @@
       "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw=="
     },
     "proxy-addr": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.5.tgz",
-      "integrity": "sha512-t/7RxHXPH6cJtP0pRG6smSr9QJidhB+3kXu0KgXnbGYMgzEnUxRQ4/LDdfOwZEMyIh3/xHb8PX3t+lfL9z+YVQ==",
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
+      "integrity": "sha512-llQsMLSUDUPT44jdrU/O37qlnifitDP+ZwrmmZcoSKyLKvtZxpyV0n2/bD/N4tBAAZ/gJEdZU7KMraoK1+XYAg==",
       "requires": {
-        "forwarded": "~0.1.2",
-        "ipaddr.js": "1.9.0"
+        "forwarded": "0.2.0",
+        "ipaddr.js": "1.9.1"
       }
     },
     "prr": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/prr/-/prr-1.0.1.tgz",
-      "integrity": "sha1-0/wRS6BplaRexok/SEzrHXj19HY="
+      "integrity": "sha512-yPw4Sng1gWghHQWj0B3ZggWUm4qVbPwPFcRG8KyxiU7J2OHFSoEHKS+EZ3fv5l1t9CyCiop6l/ZYeWbrgoQejw=="
     },
     "psl": {
       "version": "1.1.31",
@@ -5190,7 +5352,7 @@
     "randomhex": {
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/randomhex/-/randomhex-0.1.5.tgz",
-      "integrity": "sha1-us7vmCMpCRQA8qKRLGzQLxCU9YU="
+      "integrity": "sha512-2+Kkw7UiZGQWOz7rw8hPW44utkBYMEciQfziaZ71RcyDu+refQWzS/0DgfUSa5MwclrOD3sf3vI5vmrTYjwpjQ=="
     },
     "range-parser": {
       "version": "1.2.1",
@@ -5198,12 +5360,12 @@
       "integrity": "sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg=="
     },
     "raw-body": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.4.0.tgz",
-      "integrity": "sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==",
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.5.1.tgz",
+      "integrity": "sha512-qqJBtEyVgS0ZmPGdCFPWJ3FreoqvG4MVQln/kCgF7Olq95IbOp0/BWyMwbdtn4VTvkM8Y7khCQ2Xgk/tcrCXig==",
       "requires": {
-        "bytes": "3.1.0",
-        "http-errors": "1.7.2",
+        "bytes": "3.1.2",
+        "http-errors": "2.0.0",
         "iconv-lite": "0.4.24",
         "unpipe": "1.0.0"
       }
@@ -5507,11 +5669,18 @@
       }
     },
     "rlp": {
-      "version": "2.2.4",
-      "resolved": "https://registry.npmjs.org/rlp/-/rlp-2.2.4.tgz",
-      "integrity": "sha512-fdq2yYCWpAQBhwkZv+Z8o/Z4sPmYm1CUq6P7n6lVTOdb949CnqA0sndXal5C1NleSVSZm6q5F3iEbauyVln/iw==",
+      "version": "2.2.7",
+      "resolved": "https://registry.npmjs.org/rlp/-/rlp-2.2.7.tgz",
+      "integrity": "sha512-d5gdPmgQ0Z+AklL2NVXr/IoSjNZFfTVvQWzL/AM2AOcSzYP2xjlb0AC8YyCLc41MSNf6P6QVtjgPdmVtzb+4lQ==",
       "requires": {
-        "bn.js": "^4.11.1"
+        "bn.js": "^5.2.0"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "5.2.1",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.2.1.tgz",
+          "integrity": "sha512-eXRvHzWyYPBuB4NBy0cmYQjGitUrtqwbvlzP3G6VFnNRbsZQIxQ10PbKKHt8gZ/HW/D/747aDl+QkDqg3KQLMQ=="
+        }
       }
     },
     "safe-buffer": {
@@ -5544,20 +5713,20 @@
     "scrypt": {
       "version": "6.0.3",
       "resolved": "https://registry.npmjs.org/scrypt/-/scrypt-6.0.3.tgz",
-      "integrity": "sha1-BOAUpWgrU/pQwtXM4WfXGcBthw0=",
+      "integrity": "sha512-NDrWb9hCm6Ev170XYVl7TSgu4R44Rjc8EVw1ce0TMN8EkfLvkhlwcfp61OVNc8EJDiHaQwVErn1fIU0RO3kSZw==",
       "requires": {
         "nan": "^2.0.8"
       }
     },
     "scrypt-js": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/scrypt-js/-/scrypt-js-2.0.3.tgz",
-      "integrity": "sha1-uwBAvgMEPamgEqLOqfyfhSz8h9Q="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/scrypt-js/-/scrypt-js-3.0.1.tgz",
+      "integrity": "sha512-cdwTTnqPu0Hyvf5in5asVdZocVDTNRmR7XEcJuIzMjJeSHybHl7vpB66AzwTaIg6CLSbtjcxc8fqcySfnTkccA=="
     },
     "scrypt.js": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/scrypt.js/-/scrypt.js-0.2.0.tgz",
-      "integrity": "sha1-r40UZbcemZARC+38WTuUeeA6ito=",
+      "integrity": "sha512-w+7aK4lgFOzsFTsS8tWfIrBzta/QY/5ue7UetpqHRTMe0zk+5iFTAIjG7P889EEAPmPgLYvoGYMCUShZbsH9Tg==",
       "requires": {
         "scrypt": "^6.0.2",
         "scryptsy": "^1.2.1"
@@ -5566,39 +5735,53 @@
     "scryptsy": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/scryptsy/-/scryptsy-1.2.1.tgz",
-      "integrity": "sha1-oyJfpLJST4AnAHYeKFW987LZIWM=",
+      "integrity": "sha512-aldIRgMozSJ/Gl6K6qmJZysRP82lz83Wb42vl4PWN8SaLFHIaOzLPc9nUUW2jQN88CuGm5q5HefJ9jZ3nWSmTw==",
       "requires": {
         "pbkdf2": "^3.0.3"
       }
     },
     "secp256k1": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-3.7.1.tgz",
-      "integrity": "sha512-1cf8sbnRreXrQFdH6qsg2H71Xw91fCCS9Yp021GnUNJzWJS/py96fS4lHbnTnouLp08Xj6jBoBB6V78Tdbdu5g==",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-4.0.3.tgz",
+      "integrity": "sha512-NLZVf+ROMxwtEj3Xa562qgv2BK5e2WNmXPiOdVIPLgs6lyTzMvBq0aWTYMI5XCP9jZMVKOcqZLw/Wc4vDkuxhA==",
       "requires": {
-        "bindings": "^1.5.0",
-        "bip66": "^1.1.5",
-        "bn.js": "^4.11.8",
-        "create-hash": "^1.2.0",
-        "drbg.js": "^1.0.1",
-        "elliptic": "^6.4.1",
-        "nan": "^2.14.0",
-        "safe-buffer": "^5.1.2"
+        "elliptic": "^6.5.4",
+        "node-addon-api": "^2.0.0",
+        "node-gyp-build": "^4.2.0"
       },
       "dependencies": {
-        "nan": {
-          "version": "2.14.0",
-          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
-          "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
+        "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=="
+        },
+        "elliptic": {
+          "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": "^4.11.9",
+            "brorand": "^1.1.0",
+            "hash.js": "^1.0.0",
+            "hmac-drbg": "^1.0.1",
+            "inherits": "^2.0.4",
+            "minimalistic-assert": "^1.0.1",
+            "minimalistic-crypto-utils": "^1.0.1"
+          }
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
         }
       }
     },
     "seek-bzip": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/seek-bzip/-/seek-bzip-1.0.5.tgz",
-      "integrity": "sha1-z+kXyz0nS8/6x5J1ivUxc+sfq9w=",
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/seek-bzip/-/seek-bzip-1.0.6.tgz",
+      "integrity": "sha512-e1QtP3YL5tWww8uKaOCQ18UxIT2laNBXHjV/S2WYCiK4udiv8lkG89KRIoCjUagnAmCBurjF4zEVX2ByBbnCjQ==",
       "requires": {
-        "commander": "~2.8.1"
+        "commander": "^2.8.1"
       }
     },
     "semaphore": {
@@ -5621,23 +5804,23 @@
       }
     },
     "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
+      "version": "0.18.0",
+      "resolved": "https://registry.npmjs.org/send/-/send-0.18.0.tgz",
+      "integrity": "sha512-qqWzuOjSFOuqPjFe4NOsMLafToQQwBSOEpS+FwEt3A2V3vKubTquT3vmLTQpFgMXp8AlFWFuP1qKaJZOtPpVXg==",
       "requires": {
         "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
+        "depd": "2.0.0",
+        "destroy": "1.2.0",
         "encodeurl": "~1.0.2",
         "escape-html": "~1.0.3",
         "etag": "~1.8.1",
         "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
+        "http-errors": "2.0.0",
         "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
+        "ms": "2.1.3",
+        "on-finished": "2.4.1",
         "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
+        "statuses": "2.0.1"
       },
       "dependencies": {
         "mime": {
@@ -5646,21 +5829,21 @@
           "integrity": "sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg=="
         },
         "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
         }
       }
     },
     "serve-static": {
-      "version": "1.14.1",
-      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.1.tgz",
-      "integrity": "sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==",
+      "version": "1.15.0",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.15.0.tgz",
+      "integrity": "sha512-XGuRDNjXUijsUL0vl6nSD7cwURuzEgglbOaFuZM9g3kwDXOWVTck0jLzjPzGD+TazWbboZYu52/9/XPdUgne9g==",
       "requires": {
         "encodeurl": "~1.0.2",
         "escape-html": "~1.0.3",
         "parseurl": "~1.3.3",
-        "send": "0.17.1"
+        "send": "0.18.0"
       }
     },
     "servify": {
@@ -5707,12 +5890,12 @@
     "setimmediate": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/setimmediate/-/setimmediate-1.0.5.tgz",
-      "integrity": "sha1-KQy7Iy4waULX1+qbg3Mqt4VvgoU="
+      "integrity": "sha512-MATJdZp8sLqDl/68LfQmbP8zKPLQNV6BIZoIgrscFDQ+RsvK/BxeDQOgyxKKoh0y/8h3BqVFnCqQ/gd+reiIXA=="
     },
     "setprototypeof": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.1.tgz",
-      "integrity": "sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw=="
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+      "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
     },
     "sha.js": {
       "version": "2.4.11",
@@ -5724,9 +5907,9 @@
       }
     },
     "sha3": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/sha3/-/sha3-1.2.3.tgz",
-      "integrity": "sha512-sOWDZi8cDBRkLfWOw18wvJyNblXDHzwMGnRWut8zNNeIeLnmMRO17bjpLc7OzMuj1ASUgx2IyohzUCAl+Kx5vA==",
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/sha3/-/sha3-1.2.6.tgz",
+      "integrity": "sha512-KgLGmJGrmNB4JWVsAV11Yk6KbvsAiygWJc7t5IebWva/0NukNrjJqhtKhzy3Eiv2AKuGvhZZt7dt1mDo7HkoiQ==",
       "requires": {
         "nan": "2.13.2"
       },
@@ -5763,15 +5946,25 @@
       "resolved": "https://registry.npmjs.org/shellwords/-/shellwords-0.1.1.tgz",
       "integrity": "sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww=="
     },
+    "side-channel": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.0.4.tgz",
+      "integrity": "sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==",
+      "requires": {
+        "call-bind": "^1.0.0",
+        "get-intrinsic": "^1.0.2",
+        "object-inspect": "^1.9.0"
+      }
+    },
     "simple-concat": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.0.tgz",
       "integrity": "sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY="
     },
     "simple-get": {
-      "version": "2.8.1",
-      "resolved": "https://registry.npmjs.org/simple-get/-/simple-get-2.8.1.tgz",
-      "integrity": "sha512-lSSHRSw3mQNUGPAYRqo7xy9dhKmxFXIjLjp4KHpf99GEH2VH7C3AM+Qfx6du6jhfUi6Vm7XnbEVEf7Wb6N8jRw==",
+      "version": "2.8.2",
+      "resolved": "https://registry.npmjs.org/simple-get/-/simple-get-2.8.2.tgz",
+      "integrity": "sha512-Ijd/rV5o+mSBBs4F/x9oDPtTx9Zb6X9brmnXvMW4J7IR15ngi9q5xxqWBKU744jTZiaXtxaPL7uHG6vtN8kUkw==",
       "requires": {
         "decompress-response": "^3.3.0",
         "once": "^1.3.1",
@@ -6027,9 +6220,9 @@
       }
     },
     "statuses": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
-      "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.1.tgz",
+      "integrity": "sha512-RwNA9Z/7PrK06rYLIzFMlaF+l73iwpzsqRIFgbMLbTcLD6cOao82TaWefPXQvB2fOC4AjuYSEndS7N/mTCbkdQ=="
     },
     "stealthy-require": {
       "version": "1.1.1",
@@ -6090,7 +6283,7 @@
     "strict-uri-encode": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz",
-      "integrity": "sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM="
+      "integrity": "sha512-R3f198pcvnB+5IpnBlRkphuE9n46WyVl8I39W/ZUTZLz4nqSP/oLYUrcnJrw462Ds8he4YKMov2efsTIw1BDGQ=="
     },
     "string-width": {
       "version": "1.0.2",
@@ -6140,7 +6333,7 @@
     "strip-hex-prefix": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/strip-hex-prefix/-/strip-hex-prefix-1.0.0.tgz",
-      "integrity": "sha1-DF8VX+8RUTczd96du1iNoFUA428=",
+      "integrity": "sha512-q8d4ue7JGEiVcypji1bALTos+0pWtyGlivAWyPuTkHzuTCJqrK9sWxYQZUq6Nq3cuyv3bm734IhHvHtGGURU6A==",
       "requires": {
         "is-hex-prefixed": "1.0.0"
       }
@@ -6244,13 +6437,12 @@
       },
       "dependencies": {
         "eth-lib": {
-          "version": "0.1.27",
-          "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.1.27.tgz",
-          "integrity": "sha512-B8czsfkJYzn2UIEMwjc7Mbj+Cy72V+/OXH/tb44LV8jhrjizQJJ325xMOMyk3+ETa6r6oi0jsUY14+om8mQMWA==",
+          "version": "0.1.29",
+          "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.1.29.tgz",
+          "integrity": "sha512-bfttrr3/7gG4E02HoWTDUcDDslN003OlOoBxk9virpAZQ1ja/jDgwkWB8QfJF7ojuEowrqy+lzp9VcJG7/k5bQ==",
           "requires": {
             "bn.js": "^4.11.6",
             "elliptic": "^6.4.0",
-            "keccakjs": "^0.2.1",
             "nano-json-stream-parser": "^0.1.2",
             "servify": "^0.1.12",
             "ws": "^3.0.0",
@@ -6321,14 +6513,14 @@
         "bluebird": {
           "version": "2.11.0",
           "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-2.11.0.tgz",
-          "integrity": "sha1-U0uQM8AiyVecVro7Plpcqvu2UOE="
+          "integrity": "sha512-UfFSr22dmHPQqPP9XWHRhq+gWnHCYguQGkXQlbyPtW5qTnhFWA8/iXg765tH0cAjy7l/zPJ1aBTO0g5XgA7kvQ=="
         }
       }
     },
     "thenify": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.0.tgz",
-      "integrity": "sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.1.tgz",
+      "integrity": "sha512-RVZSIV5IG10Hk3enotrhvz0T9em6cyHBLkH/YAZuKqd8hRkKhSfCGIcP2KUY0EPxndzANBmNllzWPwak+bheSw==",
       "requires": {
         "any-promise": "^1.0.0"
       }
@@ -6336,7 +6528,7 @@
     "thenify-all": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/thenify-all/-/thenify-all-1.6.0.tgz",
-      "integrity": "sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=",
+      "integrity": "sha512-RNxQH/qI8/t3thXJDwcstUO4zeqo64+Uy/+sNVRBx4Xn2OX+OZ9oP+iJnNFqplFra2ZUVeKCSa2oVWi3T4uVmA==",
       "requires": {
         "thenify": ">= 3.1.0 < 4"
       }
@@ -6373,7 +6565,7 @@
     "timed-out": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/timed-out/-/timed-out-4.0.1.tgz",
-      "integrity": "sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8="
+      "integrity": "sha512-G7r3AhovYtr5YKOWQkta8RKAPb+J9IsO4uVmzjl8AZwfhs8UcUwTiD6gcJYSgOtzyjvQKrKYn41syHbUWMkafA=="
     },
     "timers-browserify": {
       "version": "1.4.2",
@@ -6476,9 +6668,9 @@
       }
     },
     "toidentifier": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
-      "integrity": "sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw=="
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
     },
     "tr46": {
       "version": "1.0.1",
@@ -6531,16 +6723,16 @@
       },
       "dependencies": {
         "mime-db": {
-          "version": "1.42.0",
-          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.42.0.tgz",
-          "integrity": "sha512-UbfJCR4UAVRNgMpfImz05smAXK7+c+ZntjaA26ANtkXLlOe947Aag5zdIcKQULAiF9Cq4WxBi9jUs5zkA84bYQ=="
+          "version": "1.52.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
+          "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg=="
         },
         "mime-types": {
-          "version": "2.1.25",
-          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.25.tgz",
-          "integrity": "sha512-5KhStqB5xpTAeGqKBAMgwaYMnQik7teQN4IAzC7npDv6kzeU6prfkR67bc87J1kWMPGkoaZSq1npmexMgkmEVg==",
+          "version": "2.1.35",
+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
+          "integrity": "sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==",
           "requires": {
-            "mime-db": "1.42.0"
+            "mime-db": "1.52.0"
           }
         }
       }
@@ -6569,9 +6761,9 @@
       "integrity": "sha512-4IcGSufhFshvLNcMCV80UnQVlZ5pMOC8mvNPForqwA4+lzYQuetTESLDQkeLmihq8bRcnpbQa48Wb8Lh16/xow=="
     },
     "unbzip2-stream": {
-      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/unbzip2-stream/-/unbzip2-stream-1.3.3.tgz",
-      "integrity": "sha512-fUlAF7U9Ah1Q6EieQ4x4zLNejrRvDWUYmxXUpN3uziFYCHapjWFaCAnreY9bGgxzaMCFAPPpYNng57CypwJVhg==",
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/unbzip2-stream/-/unbzip2-stream-1.4.3.tgz",
+      "integrity": "sha512-mlExGW4w71ebDJviH16lQLtZS32VKqsSfk80GCfUlwT/4/hNRFsoscrF/c++9xinkMzECL1uL9DDwXqFWkruPg==",
       "requires": {
         "buffer": "^5.2.1",
         "through": "^2.3.8"
@@ -6676,7 +6868,7 @@
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
-      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+      "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ=="
     },
     "unset-value": {
       "version": "1.0.0",
@@ -6764,7 +6956,7 @@
     "url-parse-lax": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/url-parse-lax/-/url-parse-lax-1.0.0.tgz",
-      "integrity": "sha1-evjzA2Rem9eaJy56FKxovAYJ2nM=",
+      "integrity": "sha512-BVA4lR5PIviy2PMseNd2jbFQ+jwSwQGdJejf5ctd1rEXt0Ypd7yanUK9+lYechVlN5VaTJGsu2U/3MDDu6KgBA==",
       "requires": {
         "prepend-http": "^1.0.1"
       }
@@ -6772,12 +6964,12 @@
     "url-set-query": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/url-set-query/-/url-set-query-1.0.0.tgz",
-      "integrity": "sha1-AW6M/Xwg7gXK/neV6JK9BwL6ozk="
+      "integrity": "sha512-3AChu4NiXquPfeckE5R5cGdiHCMWJx1dwCWOmWIL4KHAziJNOFIYJlpGFeKDvwLPHovZRCxK3cYlwzqI9Vp+Gg=="
     },
     "url-to-options": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/url-to-options/-/url-to-options-1.0.1.tgz",
-      "integrity": "sha1-FQWgOiiaSMvXpDTvuu7FBV9WM6k="
+      "integrity": "sha512-0kQLIzG4fdk/G5NONku64rSH/x32NOA39LVQqlK8Le6lvTF6GGRJpqaQFGgU+CLwySIqBSMdwYM0sYcW9f6P4A=="
     },
     "use": {
       "version": "3.1.1",
@@ -6788,7 +6980,7 @@
     "utf8": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
-      "integrity": "sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g="
+      "integrity": "sha512-FzZp4f0vPa0AfWf+eav6hqZEqbn7TU1my/GUexpF9e0Afe/fnuLQvgdq5KgD3ggUpu3DpwRUGC0iS8q35eVBLQ=="
     },
     "util": {
       "version": "0.10.4",
@@ -6806,7 +6998,7 @@
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="
     },
     "uuid": {
       "version": "3.3.2",
@@ -6841,7 +7033,7 @@
     "vary": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="
     },
     "verror": {
       "version": "1.10.0",
@@ -6974,7 +7166,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7002,7 +7194,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7021,7 +7213,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7049,7 +7241,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7066,7 +7258,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7093,7 +7285,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7110,7 +7302,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7134,12 +7326,12 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         },
         "uuid": {
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
-          "integrity": "sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w="
+          "integrity": "sha512-nWg9+Oa3qD2CQzHIP4qKUqwNfzKn8P0LtFhotaCTFchsV7ZfDhAybeip/HZVeMIpZi9JgY1E3nUlwaCmZT1sEg=="
         }
       }
     },
@@ -7161,7 +7353,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7183,7 +7375,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7199,7 +7391,7 @@
         "bn.js": {
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
-          "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU="
+          "integrity": "sha512-XWwnNNFCuuSQ0m3r3C4LE3EiORltHd9M05pq6FOlVeiophzRbMo50Sbz1ehl8K3Z+jw9+vmgnXefY1hz8X+2wA=="
         }
       }
     },
@@ -7247,7 +7439,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7264,7 +7456,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         }
       }
     },
@@ -7296,7 +7488,7 @@
         "bn.js": {
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
-          "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU="
+          "integrity": "sha512-XWwnNNFCuuSQ0m3r3C4LE3EiORltHd9M05pq6FOlVeiophzRbMo50Sbz1ehl8K3Z+jw9+vmgnXefY1hz8X+2wA=="
         },
         "eth-lib": {
           "version": "0.1.27",
@@ -7315,7 +7507,7 @@
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-          "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+          "integrity": "sha512-5WsVTFcH1ut/kkhAaHf4PVgI8c7++GiVcpCGxPouI6ZVjsqPnSDf8h/8HtVqc0t4fzRXwnMK70EcZeAs3PIddg=="
         },
         "ws": {
           "version": "3.3.3",
@@ -7410,11 +7602,11 @@
       }
     },
     "xhr": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npmjs.org/xhr/-/xhr-2.5.0.tgz",
-      "integrity": "sha512-4nlO/14t3BNUZRXIXfXe+3N6w3s1KoxcJUUURctd64BLRe67E4gRwp4PjywtDY72fXpZ1y6Ch0VZQRY/gMPzzQ==",
+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/xhr/-/xhr-2.6.0.tgz",
+      "integrity": "sha512-/eCGLb5rxjx5e3mF1A7s+pLlR6CGyqWN91fv1JgER5mVWg1MZmlhBvy9kjcsOdRk8RrIujotWyJamfyrp+WIcA==",
       "requires": {
-        "global": "~4.3.0",
+        "global": "~4.4.0",
         "is-function": "^1.0.1",
         "parse-headers": "^2.0.0",
         "xtend": "^4.0.0"
@@ -7435,17 +7627,17 @@
       }
     },
     "xhr-request-promise": {
-      "version": "0.1.2",
-      "resolved": "https://registry.npmjs.org/xhr-request-promise/-/xhr-request-promise-0.1.2.tgz",
-      "integrity": "sha1-NDxE0e53JrhkgGloLQ+EDIO0Jh0=",
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/xhr-request-promise/-/xhr-request-promise-0.1.3.tgz",
+      "integrity": "sha512-YUBytBsuwgitWtdRzXDDkWAXzhdGB8bYm0sSzMPZT7Z2MBjMSTHFsyCT1yCRATY+XC69DUrQraRAEgcoCRaIPg==",
       "requires": {
-        "xhr-request": "^1.0.1"
+        "xhr-request": "^1.1.0"
       }
     },
     "xhr2-cookies": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/xhr2-cookies/-/xhr2-cookies-1.1.0.tgz",
-      "integrity": "sha1-fXdEnQmZGX8VXLc7I99yUF7YnUg=",
+      "integrity": "sha512-hjXUA6q+jl/bd8ADHcVfFsSPIf+tyLIjuO9TwJC9WI6JP2zKcS7C+p56I9kCLLsaCiNT035iYvEUUzdEFj/8+g==",
       "requires": {
         "cookiejar": "^2.1.1"
       }
@@ -7463,7 +7655,7 @@
     "xmlhttprequest": {
       "version": "1.8.0",
       "resolved": "https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz",
-      "integrity": "sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw="
+      "integrity": "sha512-58Im/U0mlVBLM38NdZjHyhuMtCqa61469k2YP/AaPbvCoV9aQGUpbJBj1QRm2ytRiVQBD/fsw7L2bJGDVQswBA=="
     },
     "xtend": {
       "version": "4.0.1",
@@ -7479,7 +7671,7 @@
     "yaeti": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/yaeti/-/yaeti-0.0.6.tgz",
-      "integrity": "sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc="
+      "integrity": "sha512-MvQa//+KcZCUkBTIC9blM+CU9J2GzuTytsOUwf2lidtvkx/6gnEp1QvJv34t9vdjhFmha/mUiNDbN0D0mJWdug=="
     },
     "yargs": {
       "version": "7.1.0",
@@ -7514,7 +7706,7 @@
     "yauzl": {
       "version": "2.10.0",
       "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
-      "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
+      "integrity": "sha512-p4a9I6X6nu6IhoGmBqAcbJy1mlC4j27vEPZX9F4L4/vZT3Lyq1VkFHw/V/PUcB9Buo+DG3iHkT0x3Qya58zc3g==",
       "requires": {
         "buffer-crc32": "~0.2.3",
         "fd-slicer": "~1.1.0"