diff --git a/package-lock.json b/package-lock.json
index 2e68e13..69ced89 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -880,6 +880,121 @@
         "to-fast-properties": "^2.0.0"
       }
     },
+    "@ethersproject/abi": {
+      "version": "5.0.0-beta.153",
+      "resolved": "https://registry.npmjs.org/@ethersproject/abi/-/abi-5.0.0-beta.153.tgz",
+      "integrity": "sha512-aXweZ1Z7vMNzJdLpR1CZUAIgnwjrZeUSvN9syCwlBaEBUFJmFY+HHnfuTI5vIhVs/mRkfJVrbEyl51JZQqyjAg==",
+      "requires": {
+        "@ethersproject/address": ">=5.0.0-beta.128",
+        "@ethersproject/bignumber": ">=5.0.0-beta.130",
+        "@ethersproject/bytes": ">=5.0.0-beta.129",
+        "@ethersproject/constants": ">=5.0.0-beta.128",
+        "@ethersproject/hash": ">=5.0.0-beta.128",
+        "@ethersproject/keccak256": ">=5.0.0-beta.127",
+        "@ethersproject/logger": ">=5.0.0-beta.129",
+        "@ethersproject/properties": ">=5.0.0-beta.131",
+        "@ethersproject/strings": ">=5.0.0-beta.130"
+      }
+    },
+    "@ethersproject/address": {
+      "version": "5.0.0-beta.135",
+      "resolved": "https://registry.npmjs.org/@ethersproject/address/-/address-5.0.0-beta.135.tgz",
+      "integrity": "sha512-y9r/ajYBCDVM1ZD6kKgTRHBOxgURcQ24qTolw3oGyK373XHNrcY9ufDgZ5KR8h0OvLvczb4SGzYhahYvBnyZwA==",
+      "requires": {
+        "@ethersproject/bignumber": ">=5.0.0-beta.138",
+        "@ethersproject/bytes": ">=5.0.0-beta.137",
+        "@ethersproject/keccak256": ">=5.0.0-beta.131",
+        "@ethersproject/logger": ">=5.0.0-beta.137",
+        "@ethersproject/rlp": ">=5.0.0-beta.132",
+        "bn.js": "^4.4.0"
+      }
+    },
+    "@ethersproject/bignumber": {
+      "version": "5.0.0-beta.139",
+      "resolved": "https://registry.npmjs.org/@ethersproject/bignumber/-/bignumber-5.0.0-beta.139.tgz",
+      "integrity": "sha512-h1C1okCmPK3UVWwMGUbuCZykplJmD/TdknPQQHJWL/chK5MqBhyQ5o1Cay7mHXKCBnjWrR9BtwjfkAh76pYtFA==",
+      "requires": {
+        "@ethersproject/bytes": ">=5.0.0-beta.137",
+        "@ethersproject/logger": ">=5.0.0-beta.137",
+        "@ethersproject/properties": ">=5.0.0-beta.140",
+        "bn.js": "^4.4.0"
+      }
+    },
+    "@ethersproject/bytes": {
+      "version": "5.0.0-beta.138",
+      "resolved": "https://registry.npmjs.org/@ethersproject/bytes/-/bytes-5.0.0-beta.138.tgz",
+      "integrity": "sha512-q4vaIthv89RJQ0V6gdzh1xuluJE1uYbnfzBUYTegicaXX6jRTCjDDhyiQhyEnNi7pKrGtuOrR3v3+7WtAR8Imw==",
+      "requires": {
+        "@ethersproject/logger": ">=5.0.0-beta.137"
+      }
+    },
+    "@ethersproject/constants": {
+      "version": "5.0.0-beta.134",
+      "resolved": "https://registry.npmjs.org/@ethersproject/constants/-/constants-5.0.0-beta.134.tgz",
+      "integrity": "sha512-tKKL7F3ozL+XgZ4+McNmp12rnPxKf+InKr36asVVAiVLa0WxnNsO9m/+0LkW5dMFbqn2i2VJtBwKfl1OE6GInA==",
+      "requires": {
+        "@ethersproject/bignumber": ">=5.0.0-beta.138"
+      }
+    },
+    "@ethersproject/hash": {
+      "version": "5.0.0-beta.134",
+      "resolved": "https://registry.npmjs.org/@ethersproject/hash/-/hash-5.0.0-beta.134.tgz",
+      "integrity": "sha512-yvHyu+9Mgi4jn41DakA8tgHwngsSlTEyLBavP08GN3oS6fTiqflEMa4AXUFndztpcvk7UdGlowCOp6UupbmRVQ==",
+      "requires": {
+        "@ethersproject/bytes": ">=5.0.0-beta.137",
+        "@ethersproject/keccak256": ">=5.0.0-beta.131",
+        "@ethersproject/logger": ">=5.0.0-beta.137",
+        "@ethersproject/strings": ">=5.0.0-beta.136"
+      }
+    },
+    "@ethersproject/keccak256": {
+      "version": "5.0.0-beta.132",
+      "resolved": "https://registry.npmjs.org/@ethersproject/keccak256/-/keccak256-5.0.0-beta.132.tgz",
+      "integrity": "sha512-YpkwYGV4nu1QM7Q+mhYKO1bCk/sbiV7AAU/HnHwZhDiwJZSDRwfjiFkAJQpvTbsAR02Ek9LhFEBg4OfLTEhJLg==",
+      "requires": {
+        "@ethersproject/bytes": ">=5.0.0-beta.137",
+        "js-sha3": "0.5.7"
+      },
+      "dependencies": {
+        "js-sha3": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.5.7.tgz",
+          "integrity": "sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc="
+        }
+      }
+    },
+    "@ethersproject/logger": {
+      "version": "5.0.0-beta.137",
+      "resolved": "https://registry.npmjs.org/@ethersproject/logger/-/logger-5.0.0-beta.137.tgz",
+      "integrity": "sha512-H36iMhWOY+tco1+o2NZUdQT8Gc6Y9795RSPgvluatvjvyt3X6mHtWXes4F8Rc5N/95px++a/ODYVSkSmlr68+A=="
+    },
+    "@ethersproject/properties": {
+      "version": "5.0.0-beta.143",
+      "resolved": "https://registry.npmjs.org/@ethersproject/properties/-/properties-5.0.0-beta.143.tgz",
+      "integrity": "sha512-Stagr55S1G8g7edhv5kkHoVaaebYzwlutzYv7hWT2Ad+LPLIT7mkFf88DX8i0eWLQ8hBaSbCfKrc7uS6K7MdEw==",
+      "requires": {
+        "@ethersproject/logger": ">=5.0.0-beta.137"
+      }
+    },
+    "@ethersproject/rlp": {
+      "version": "5.0.0-beta.133",
+      "resolved": "https://registry.npmjs.org/@ethersproject/rlp/-/rlp-5.0.0-beta.133.tgz",
+      "integrity": "sha512-4zwGZov221uYuz6oXqAf2i5dk3ven7mSNkPRYvS2xdAlUn1Qy8GFUswyRuLaGzpWUGNlKIWCEnvomP5L/CtMPQ==",
+      "requires": {
+        "@ethersproject/bytes": ">=5.0.0-beta.137",
+        "@ethersproject/logger": ">=5.0.0-beta.137"
+      }
+    },
+    "@ethersproject/strings": {
+      "version": "5.0.0-beta.137",
+      "resolved": "https://registry.npmjs.org/@ethersproject/strings/-/strings-5.0.0-beta.137.tgz",
+      "integrity": "sha512-Z1xKXjoBWM5DOlc8HvjpOKO1zZ8kf4nLpf4C8zZjz+GNhaH03z74tXNNpdLf4UV6otMcHcJtO+X5ATE4TCn9Iw==",
+      "requires": {
+        "@ethersproject/bytes": ">=5.0.0-beta.137",
+        "@ethersproject/constants": ">=5.0.0-beta.133",
+        "@ethersproject/logger": ">=5.0.0-beta.137"
+      }
+    },
     "@fortawesome/fontawesome-common-types": {
       "version": "0.2.9",
       "resolved": "https://registry.npmjs.org/@fortawesome/fontawesome-common-types/-/fontawesome-common-types-0.2.9.tgz",
@@ -955,10 +1070,31 @@
       "integrity": "sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==",
       "dev": true
     },
+    "@sindresorhus/is": {
+      "version": "0.14.0",
+      "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
+      "integrity": "sha512-9NET910DNaIPngYnLLPeg+Ogzqsi9uM4mSboU5y6p8S5DzMTVEsJZrawi+BoDNUVBa2DhJqQYUFvMDfgU062LQ=="
+    },
+    "@szmarczak/http-timer": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@szmarczak/http-timer/-/http-timer-1.1.2.tgz",
+      "integrity": "sha512-XIB2XbzHTN6ieIjfIMV9hlVcfPU26s2vafYWQcZHWXHOxiaRZYEDKEwdl129Zyg50+foYV2jCgtrqSA6qNuNSA==",
+      "requires": {
+        "defer-to-connect": "^1.0.1"
+      }
+    },
+    "@types/bn.js": {
+      "version": "4.11.6",
+      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-4.11.6.tgz",
+      "integrity": "sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/node": {
-      "version": "10.12.15",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.15.tgz",
-      "integrity": "sha512-9kROxduaN98QghwwHmxXO2Xz3MaWf+I1sLVAA6KJDF5xix+IyXVhds0MAfdNwtcpSrzhaTsNB0/jnL86fgUhqA=="
+      "version": "10.17.24",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.17.24.tgz",
+      "integrity": "sha512-5SCfvCxV74kzR3uWgTYiGxrd69TbT1I6+cMx1A5kEly/IVveJBimtAMlXiEyVFn5DvUFewQWxOOiJhlxeQwxgA=="
     },
     "@vue/babel-preset-app": {
       "version": "3.2.0",
@@ -1035,7 +1171,7 @@
         },
         "eslint": {
           "version": "4.19.1",
-          "resolved": "http://registry.npmjs.org/eslint/-/eslint-4.19.1.tgz",
+          "resolved": "https://registry.npmjs.org/eslint/-/eslint-4.19.1.tgz",
           "integrity": "sha512-bT3/1x1EbZB7phzYu7vCr1v3ONuzDtX8WjuM9c0iYxe+cq+pwcKEoQjl7zd3RpC6YOLgnSy3cTN58M2jcoPDIQ==",
           "dev": true,
           "requires": {
@@ -1090,7 +1226,7 @@
         },
         "fast-deep-equal": {
           "version": "1.1.0",
-          "resolved": "http://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
           "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
           "dev": true
         },
@@ -1284,6 +1420,54 @@
       "integrity": "sha512-Xn/+vdm9CjuC9p3Ae+lTClNutrVhsXpzxvoTXXtoys6kVRX9FkueSUAqSWAyZntmVLlR4DosBV4pH8y5Z/HbUw==",
       "dev": true
     },
+    "@web3-js/scrypt-shim": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/@web3-js/scrypt-shim/-/scrypt-shim-0.1.0.tgz",
+      "integrity": "sha512-ZtZeWCc/s0nMcdx/+rZwY1EcuRdemOK9ag21ty9UsHkFxsNb/AaoucUz0iPuyGe0Ku+PFuRmWZG7Z7462p9xPw==",
+      "requires": {
+        "scryptsy": "^2.1.0",
+        "semver": "^6.3.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "6.3.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
+          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw=="
+        }
+      }
+    },
+    "@web3-js/websocket": {
+      "version": "1.0.30",
+      "resolved": "https://registry.npmjs.org/@web3-js/websocket/-/websocket-1.0.30.tgz",
+      "integrity": "sha512-fDwrD47MiDrzcJdSeTLF75aCcxVVt8B1N74rA+vh2XCAvFy4tEWJjtnUtj2QG7/zlQ6g9cQ88bZFBxwd9/FmtA==",
+      "requires": {
+        "debug": "^2.2.0",
+        "es5-ext": "^0.10.50",
+        "nan": "^2.14.0",
+        "typedarray-to-buffer": "^3.1.5",
+        "yaeti": "^0.0.6"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        },
+        "nan": {
+          "version": "2.14.1",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.1.tgz",
+          "integrity": "sha512-isWHgVjnFjh2x2yuJ/tj3JbwoHu3UC2dX5G/88Cm24yB6YopVgxvBObDY7n5xW6ExmFhJpSEQqFPvq9zaXc8Jw=="
+        }
+      }
+    },
     "@webassemblyjs/ast": {
       "version": "1.7.11",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.7.11.tgz",
@@ -1494,7 +1678,7 @@
     },
     "acorn-jsx": {
       "version": "3.0.1",
-      "resolved": "http://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
       "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
       "dev": true,
       "requires": {
@@ -1503,7 +1687,7 @@
       "dependencies": {
         "acorn": {
           "version": "3.3.0",
-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
           "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
           "dev": true
         }
@@ -1588,11 +1772,6 @@
         "color-convert": "^1.9.0"
       }
     },
-    "any-promise": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
-      "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8="
-    },
     "anymatch": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-2.0.0.tgz",
@@ -1727,7 +1906,7 @@
         },
         "util": {
           "version": "0.10.3",
-          "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+          "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
           "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
           "dev": true,
           "requires": {
@@ -1755,7 +1934,7 @@
     },
     "async": {
       "version": "1.5.2",
-      "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
       "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
       "dev": true
     },
@@ -1868,7 +2047,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -1887,7 +2066,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -1992,7 +2171,8 @@
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
     },
     "base": {
       "version": "0.11.2",
@@ -2049,6 +2229,14 @@
         }
       }
     },
+    "base-x": {
+      "version": "3.0.8",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.8.tgz",
+      "integrity": "sha512-Rl/1AWP4J/zRrk54hhlxH4drNxPJXYUaKffODVI53/dAsV4t9fBxyxYKAVPU1XBHxYwOWP9h9H0hM2MVw4YfJA==",
+      "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",
@@ -2086,27 +2274,31 @@
       "integrity": "sha512-+hN/Zh2D08Mx65pZ/4g5bsmNiZUuChDiQfTUQ7qJr4/kuopCr88xZsAXv6mBoZEsUI4OuGHlX59qE94K2mMW8Q==",
       "dev": true
     },
+    "bignumber.js": {
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-9.0.0.tgz",
+      "integrity": "sha512-t/OYhhJ2SD+YGBQcjY8GzzDHEk9f3nerxjtfa6tlMXfe7frs/WozhvCNoGvpM0P3bNf3Gq5ZRMlGr5f3r4/N8A=="
+    },
     "binary-extensions": {
       "version": "1.12.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.12.0.tgz",
       "integrity": "sha512-DYWGk01lDcxeS/K9IHPGWfT8PsJmbXRtRd2Sx72Tnb8pcYZQFF1oSDb8hJtS1vhp212q1Rzi5dUf9+nq0o9UIg==",
       "dev": true
     },
-    "bl": {
-      "version": "1.2.2",
-      "resolved": "http://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
-      "integrity": "sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==",
+    "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": {
-        "readable-stream": "^2.3.5",
-        "safe-buffer": "^5.1.1"
+        "file-uri-to-path": "1.0.0"
       }
     },
-    "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=",
+    "bip66": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/bip66/-/bip66-1.1.5.tgz",
+      "integrity": "sha1-AfqHSHhcpwlV1QESF9GzE5lpyiI=",
       "requires": {
-        "inherits": "~2.0.0"
+        "safe-buffer": "^5.0.1"
       }
     },
     "bluebird": {
@@ -2211,6 +2403,7 @@
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
       "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dev": true,
       "requires": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -2293,14 +2486,6 @@
         "randombytes": "^2.0.1"
       }
     },
-    "browserify-sha3": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/browserify-sha3/-/browserify-sha3-0.0.1.tgz",
-      "integrity": "sha1-P/NKMAbvFcD7NWflQbkaI0ASPRE=",
-      "requires": {
-        "js-sha3": "^0.3.1"
-      }
-    },
     "browserify-sign": {
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/browserify-sign/-/browserify-sign-4.0.4.tgz",
@@ -2337,7 +2522,7 @@
     },
     "buffer": {
       "version": "4.9.1",
-      "resolved": "http://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
       "integrity": "sha1-bRu2AbB6TvztlwlBMgkwJ8lbwpg=",
       "dev": true,
       "requires": {
@@ -2346,30 +2531,6 @@
         "isarray": "^1.0.0"
       }
     },
-    "buffer-alloc": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/buffer-alloc/-/buffer-alloc-1.2.0.tgz",
-      "integrity": "sha512-CFsHQgjtW1UChdXgbyJGtnm+O/uLQeZdtbDo8mfUgYXCHSM1wgrVxXm6bSyrUuErEb+4sYVGCzASBRot7zyrow==",
-      "requires": {
-        "buffer-alloc-unsafe": "^1.1.0",
-        "buffer-fill": "^1.0.0"
-      }
-    },
-    "buffer-alloc-unsafe": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz",
-      "integrity": "sha512-TEM2iMIEQdJ2yjPJoSIsldnleVaAk1oW3DBVUykyOLsEsFmEc9kn+SFFPz+gl54KQNxlDnAwCXosOS9Okx2xAg=="
-    },
-    "buffer-crc32": {
-      "version": "0.2.13",
-      "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
-      "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI="
-    },
-    "buffer-fill": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
-      "integrity": "sha1-+PeLdniYiO858gXNY39o5wISKyw="
-    },
     "buffer-from": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
@@ -2411,7 +2572,7 @@
     },
     "cacache": {
       "version": "10.0.4",
-      "resolved": "http://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
+      "resolved": "https://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
       "integrity": "sha512-Dph0MzuH+rTQzGPNT9fAnrPmMmjKfST6trxJeK7NQuHRaVw24VzPRWTmg9MpcwOVQZO0E1FBICUlFeNaKPIfHA==",
       "dev": true,
       "requires": {
@@ -2470,6 +2631,40 @@
         "schema-utils": "^0.4.2"
       }
     },
+    "cacheable-request": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/cacheable-request/-/cacheable-request-6.1.0.tgz",
+      "integrity": "sha512-Oj3cAGPCqOZX7Rz64Uny2GYAZNliQSqfbePrgAQ1wKAihYmCUnraBtJtKcGR4xz7wF+LoJC+ssFZvv5BgF9Igg==",
+      "requires": {
+        "clone-response": "^1.0.2",
+        "get-stream": "^5.1.0",
+        "http-cache-semantics": "^4.0.0",
+        "keyv": "^3.0.0",
+        "lowercase-keys": "^2.0.0",
+        "normalize-url": "^4.1.0",
+        "responselike": "^1.0.2"
+      },
+      "dependencies": {
+        "get-stream": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-5.1.0.tgz",
+          "integrity": "sha512-EXr1FOzrzTfGeL0gQdeFEvOMm2mzMOglyiOXSTpPC+iAjAKftbr3jpCMWynogwYnM+eSj9sHGc6wjIcDvYiygw==",
+          "requires": {
+            "pump": "^3.0.0"
+          }
+        },
+        "lowercase-keys": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/lowercase-keys/-/lowercase-keys-2.0.0.tgz",
+          "integrity": "sha512-tqNXrS78oMOE73NMxK4EMLQsQowWf8jKooH9g7xPavRT706R6bkQJ6DY2Te7QukaZsulxa30wQ7bk0pm4XiHmA=="
+        },
+        "normalize-url": {
+          "version": "4.5.0",
+          "resolved": "https://registry.npmjs.org/normalize-url/-/normalize-url-4.5.0.tgz",
+          "integrity": "sha512-2s47yzUxdexf1OhyRi4Em83iQk0aPvwTddtFz4hnSSw9dCEsLEGf6SwIO8ss/19S9iBb5sJaOuTvTGDeZI00BQ=="
+        }
+      }
+    },
     "call-me-maybe": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/call-me-maybe/-/call-me-maybe-1.0.1.tgz",
@@ -2600,8 +2795,7 @@
     "chownr": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.1.tgz",
-      "integrity": "sha512-j38EvO5+LHX84jlo6h4UzmOwi0UgW61WRyPtJz4qaadK5eY3BTS5TY/S1Stc3Uk2lIM6TPevAlULiEJwie860g==",
-      "dev": true
+      "integrity": "sha512-j38EvO5+LHX84jlo6h4UzmOwi0UgW61WRyPtJz4qaadK5eY3BTS5TY/S1Stc3Uk2lIM6TPevAlULiEJwie860g=="
     },
     "chrome-trace-event": {
       "version": "1.0.0",
@@ -2618,6 +2812,38 @@
       "integrity": "sha512-vsGdkwSCDpWmP80ncATX7iea5DWQemg1UgCW5J8tqjU3lYw4FBYuj89J0CTVomA7BEfvSZd84GmHko+MxFQU2A==",
       "dev": true
     },
+    "cids": {
+      "version": "0.7.5",
+      "resolved": "https://registry.npmjs.org/cids/-/cids-0.7.5.tgz",
+      "integrity": "sha512-zT7mPeghoWAu+ppn8+BS1tQ5qGmbMfB4AregnQjA/qHY3GC1m1ptI9GkWNlgeu38r7CuRdXB47uY2XgAYt6QVA==",
+      "requires": {
+        "buffer": "^5.5.0",
+        "class-is": "^1.1.0",
+        "multibase": "~0.6.0",
+        "multicodec": "^1.0.0",
+        "multihashes": "~0.4.15"
+      },
+      "dependencies": {
+        "buffer": {
+          "version": "5.6.0",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.6.0.tgz",
+          "integrity": "sha512-/gDYp/UtU0eA1ys8bOs9J6a+E/KWIY+DZ+Q2WESNUA0jFRsJOc0SNUO6xJ5SGA1xueg3NL65W6s+NY5l9cunuw==",
+          "requires": {
+            "base64-js": "^1.0.2",
+            "ieee754": "^1.1.4"
+          }
+        },
+        "multicodec": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/multicodec/-/multicodec-1.0.1.tgz",
+          "integrity": "sha512-yrrU/K8zHyAH2B0slNVeq3AiwluflHpgQ3TAzwNJcuO2AoPyXgBT2EDkdbP1D8B/yFOY+S2hDYmFlI1vhVFkQw==",
+          "requires": {
+            "buffer": "^5.5.0",
+            "varint": "^5.0.0"
+          }
+        }
+      }
+    },
     "cipher-base": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/cipher-base/-/cipher-base-1.0.4.tgz",
@@ -2633,6 +2859,11 @@
       "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==",
       "dev": true
     },
+    "class-is": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/class-is/-/class-is-1.1.0.tgz",
+      "integrity": "sha512-rhjH9AG1fvabIDoGRVH587413LPjTZgmDF9fOFCbFJQV4yuocX1mHxxvXI4g3cGwbVY9wAYIoKlg1N79frJKQw=="
+    },
     "class-utils": {
       "version": "0.3.6",
       "resolved": "https://registry.npmjs.org/class-utils/-/class-utils-0.3.6.tgz",
@@ -2742,7 +2973,7 @@
         },
         "get-stream": {
           "version": "3.0.0",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
           "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
           "dev": true
         }
@@ -2765,6 +2996,14 @@
       "integrity": "sha1-2jCcwmPfFZlMaIypAheco8fNfH4=",
       "dev": true
     },
+    "clone-response": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/clone-response/-/clone-response-1.0.2.tgz",
+      "integrity": "sha1-0dyXOSAxTfZ/vrlCI7TuNQI56Ws=",
+      "requires": {
+        "mimic-response": "^1.0.0"
+      }
+    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -2848,7 +3087,8 @@
     "commander": {
       "version": "2.17.1",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.17.1.tgz",
-      "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg=="
+      "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==",
+      "dev": true
     },
     "commondir": {
       "version": "1.0.1",
@@ -2906,7 +3146,8 @@
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+      "dev": true
     },
     "concat-stream": {
       "version": "1.6.2",
@@ -2955,6 +3196,16 @@
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
       "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
     },
+    "content-hash": {
+      "version": "2.5.2",
+      "resolved": "https://registry.npmjs.org/content-hash/-/content-hash-2.5.2.tgz",
+      "integrity": "sha512-FvIQKy0S1JaWV10sMsA7TRx8bpU+pqPkhbsfvOJAdjRXvYxEckAwQWGwtRjiaJfh+E0DvcWUGqcdjwMGFjsSdw==",
+      "requires": {
+        "cids": "^0.7.1",
+        "multicodec": "^0.5.5",
+        "multihashes": "^0.4.15"
+      }
+    },
     "content-type": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
@@ -3225,7 +3476,7 @@
         },
         "jsesc": {
           "version": "0.5.0",
-          "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
           "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
           "dev": true
         },
@@ -3242,7 +3493,7 @@
         },
         "regjsgen": {
           "version": "0.2.0",
-          "resolved": "http://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
           "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=",
           "dev": true
         },
@@ -3395,6 +3646,15 @@
       "integrity": "sha1-GzN5LhHpFKL9bW7WRHRkRE5fpkA=",
       "dev": true
     },
+    "d": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/d/-/d-1.0.1.tgz",
+      "integrity": "sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==",
+      "requires": {
+        "es5-ext": "^0.10.50",
+        "type": "^1.0.1"
+      }
+    },
     "dashdash": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
@@ -3438,28 +3698,6 @@
       "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
       "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU="
     },
-    "decompress": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/decompress/-/decompress-4.2.0.tgz",
-      "integrity": "sha1-eu3YVCflqS2s/lVnSnxQXpbQH50=",
-      "requires": {
-        "decompress-tar": "^4.0.0",
-        "decompress-tarbz2": "^4.0.0",
-        "decompress-targz": "^4.0.0",
-        "decompress-unzip": "^4.0.1",
-        "graceful-fs": "^4.1.10",
-        "make-dir": "^1.0.0",
-        "pify": "^2.3.0",
-        "strip-dirs": "^2.0.0"
-      },
-      "dependencies": {
-        "pify": {
-          "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
-          "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw="
-        }
-      }
-    },
     "decompress-response": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-3.3.0.tgz",
@@ -3468,77 +3706,6 @@
         "mimic-response": "^1.0.0"
       }
     },
-    "decompress-tar": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/decompress-tar/-/decompress-tar-4.1.1.tgz",
-      "integrity": "sha512-JdJMaCrGpB5fESVyxwpCx4Jdj2AagLmv3y58Qy4GE6HMVjWz1FeVQk1Ct4Kye7PftcdOo/7U7UKzYBJgqnGeUQ==",
-      "requires": {
-        "file-type": "^5.2.0",
-        "is-stream": "^1.1.0",
-        "tar-stream": "^1.5.2"
-      }
-    },
-    "decompress-tarbz2": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/decompress-tarbz2/-/decompress-tarbz2-4.1.1.tgz",
-      "integrity": "sha512-s88xLzf1r81ICXLAVQVzaN6ZmX4A6U4z2nMbOwobxkLoIIfjVMBg7TeguTUXkKeXni795B6y5rnvDw7rxhAq9A==",
-      "requires": {
-        "decompress-tar": "^4.1.0",
-        "file-type": "^6.1.0",
-        "is-stream": "^1.1.0",
-        "seek-bzip": "^1.0.5",
-        "unbzip2-stream": "^1.0.9"
-      },
-      "dependencies": {
-        "file-type": {
-          "version": "6.2.0",
-          "resolved": "https://registry.npmjs.org/file-type/-/file-type-6.2.0.tgz",
-          "integrity": "sha512-YPcTBDV+2Tm0VqjybVd32MHdlEGAtuxS3VAYsumFokDSMG+ROT5wawGlnHDoz7bfMcMDt9hxuXvXwoKUx2fkOg=="
-        }
-      }
-    },
-    "decompress-targz": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/decompress-targz/-/decompress-targz-4.1.1.tgz",
-      "integrity": "sha512-4z81Znfr6chWnRDNfFNqLwPvm4db3WuZkqV+UgXQzSngG3CEKdBkw5jrv3axjjL96glyiiKjsxJG3X6WBZwX3w==",
-      "requires": {
-        "decompress-tar": "^4.1.1",
-        "file-type": "^5.2.0",
-        "is-stream": "^1.1.0"
-      }
-    },
-    "decompress-unzip": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/decompress-unzip/-/decompress-unzip-4.0.1.tgz",
-      "integrity": "sha1-3qrM39FK6vhVePczroIQ+bSEj2k=",
-      "requires": {
-        "file-type": "^3.8.0",
-        "get-stream": "^2.2.0",
-        "pify": "^2.3.0",
-        "yauzl": "^2.4.2"
-      },
-      "dependencies": {
-        "file-type": {
-          "version": "3.9.0",
-          "resolved": "http://registry.npmjs.org/file-type/-/file-type-3.9.0.tgz",
-          "integrity": "sha1-JXoHg4TR24CHvESdEH1SpSZyuek="
-        },
-        "get-stream": {
-          "version": "2.3.1",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-2.3.1.tgz",
-          "integrity": "sha1-Xzj5PzRgCWZu4BUKBUFn+Rvdld4=",
-          "requires": {
-            "object-assign": "^4.0.1",
-            "pinkie-promise": "^2.0.0"
-          }
-        },
-        "pify": {
-          "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
-          "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw="
-        }
-      }
-    },
     "deep-equal": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.0.1.tgz",
@@ -3584,7 +3751,7 @@
         },
         "get-stream": {
           "version": "3.0.0",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
           "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
           "dev": true
         }
@@ -3599,6 +3766,11 @@
         "clone": "^1.0.2"
       }
     },
+    "defer-to-connect": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/defer-to-connect/-/defer-to-connect-1.1.3.tgz",
+      "integrity": "sha512-0ISdNousHvZT2EiFlZeZAHBUvSxmKswVCEf8hW7KWgG4a8MVEu/3Vb6uWYozkjylyCxe0JBIiRB1jV45S70WVQ=="
+    },
     "define-properties": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
@@ -3665,7 +3837,7 @@
       "dependencies": {
         "globby": {
           "version": "6.1.0",
-          "resolved": "http://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
           "integrity": "sha1-9abXDoOV4hyFj7BInWTfAkJNUGw=",
           "dev": true,
           "requires": {
@@ -3678,7 +3850,7 @@
           "dependencies": {
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
               "dev": true
             }
@@ -3796,16 +3968,16 @@
       "dependencies": {
         "domelementtype": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
           "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs=",
           "dev": true
         }
       }
     },
     "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",
@@ -3847,6 +4019,16 @@
         "is-obj": "^1.0.0"
       }
     },
+    "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"
+      }
+    },
     "duplexer": {
       "version": "0.1.1",
       "resolved": "http://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
@@ -4012,6 +4194,35 @@
         "is-symbol": "^1.0.2"
       }
     },
+    "es5-ext": {
+      "version": "0.10.53",
+      "resolved": "https://registry.npmjs.org/es5-ext/-/es5-ext-0.10.53.tgz",
+      "integrity": "sha512-Xs2Stw6NiNHWypzRTY1MtaG/uJlwCk8kH81920ma8mvN8Xq1gsfhZvpkImLQArw8AHnv8MT2I45J3c0R8slE+Q==",
+      "requires": {
+        "es6-iterator": "~2.0.3",
+        "es6-symbol": "~3.1.3",
+        "next-tick": "~1.0.0"
+      }
+    },
+    "es6-iterator": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.3.tgz",
+      "integrity": "sha1-p96IkUGgWpSwhUQDstCg+/qY87c=",
+      "requires": {
+        "d": "1",
+        "es5-ext": "^0.10.35",
+        "es6-symbol": "^3.1.1"
+      }
+    },
+    "es6-symbol": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/es6-symbol/-/es6-symbol-3.1.3.tgz",
+      "integrity": "sha512-NJ6Yn3FuDinBaBRWl/q5X/s4koRHBrgKAu+yGI6JCBeiu3qrcbJhwT2GeR/EXVfylRk8dpQVJoLEFhK+Mu31NA==",
+      "requires": {
+        "d": "^1.0.1",
+        "ext": "^1.1.2"
+      }
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -4320,7 +4531,7 @@
     },
     "espree": {
       "version": "3.5.4",
-      "resolved": "http://registry.npmjs.org/espree/-/espree-3.5.4.tgz",
+      "resolved": "https://registry.npmjs.org/espree/-/espree-3.5.4.tgz",
       "integrity": "sha512-yAcIQxtmMiB/jL32dzEp2enBeidsB7xWPLNiw3IIkpVds1P+h7qF9YwJq1yUNzp2OKXgAprs4F61ih66UsoD1A==",
       "dev": true,
       "requires": {
@@ -4386,13 +4597,12 @@
       }
     },
     "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",
@@ -4411,63 +4621,40 @@
         }
       }
     },
-    "ethers": {
-      "version": "4.0.0-beta.1",
-      "resolved": "https://registry.npmjs.org/ethers/-/ethers-4.0.0-beta.1.tgz",
-      "integrity": "sha512-SoYhktEbLxf+fiux5SfCEwdzWENMvgIbMZD90I62s4GZD9nEjgEWy8ZboI3hck193Vs0bDoTohDISx84f2H2tw==",
+    "ethereum-bloom-filters": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/ethereum-bloom-filters/-/ethereum-bloom-filters-1.0.7.tgz",
+      "integrity": "sha512-cDcJJSJ9GMAcURiAWO3DxIEhTL/uWqlQnvgKpuYQzYPrt/izuGU+1ntQmHt0IRq6ADoSYHFnB+aCEFIldjhkMQ==",
       "requires": {
-        "@types/node": "^10.3.2",
-        "aes-js": "3.0.0",
-        "bn.js": "^4.4.0",
-        "elliptic": "6.3.3",
-        "hash.js": "1.1.3",
-        "js-sha3": "0.5.7",
-        "scrypt-js": "2.0.3",
-        "setimmediate": "1.0.4",
-        "uuid": "2.0.1",
-        "xmlhttprequest": "1.8.0"
-      },
-      "dependencies": {
-        "aes-js": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.0.0.tgz",
-          "integrity": "sha1-4h3xCtbCBTKVvLuNq0Cwnb6ofk0="
-        },
-        "elliptic": {
-          "version": "6.3.3",
-          "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz",
-          "integrity": "sha1-VILZZG1UvLif19mU/J4ulWiHbj8=",
-          "requires": {
-            "bn.js": "^4.4.0",
-            "brorand": "^1.0.1",
-            "hash.js": "^1.0.0",
-            "inherits": "^2.0.1"
-          }
-        },
-        "hash.js": {
-          "version": "1.1.3",
-          "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.3.tgz",
-          "integrity": "sha512-/UETyP0W22QILqS+6HowevwhEFJ3MBJnwTf75Qob9Wz9t0DPuisL8kW8YZMK62dHAKE1c1p+gY1TtOLY+USEHA==",
-          "requires": {
-            "inherits": "^2.0.3",
-            "minimalistic-assert": "^1.0.0"
-          }
-        },
-        "js-sha3": {
-          "version": "0.5.7",
-          "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.5.7.tgz",
-          "integrity": "sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc="
-        },
-        "setimmediate": {
-          "version": "1.0.4",
-          "resolved": "https://registry.npmjs.org/setimmediate/-/setimmediate-1.0.4.tgz",
-          "integrity": "sha1-IOgd5iLUoCWIzgyNqJc8vPHTE48="
-        },
-        "uuid": {
-          "version": "2.0.1",
-          "resolved": "http://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
-          "integrity": "sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w="
-        }
+        "js-sha3": "^0.8.0"
+      }
+    },
+    "ethereumjs-common": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/ethereumjs-common/-/ethereumjs-common-1.5.1.tgz",
+      "integrity": "sha512-aVUPRLgmXORGXXEVkFYgPhr9TGtpBY2tGhZ9Uh0A3lIUzUDr1x6kQx33SbjPUkLkX3eniPQnIL/2psjkjrOfcQ=="
+    },
+    "ethereumjs-tx": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ethereumjs-tx/-/ethereumjs-tx-2.1.2.tgz",
+      "integrity": "sha512-zZEK1onCeiORb0wyCXUvg94Ve5It/K6GD1K+26KfFKodiBiS6d9lfCXlUKGBBdQ+bv7Day+JK0tj1K+BeNFRAw==",
+      "requires": {
+        "ethereumjs-common": "^1.5.0",
+        "ethereumjs-util": "^6.0.0"
+      }
+    },
+    "ethereumjs-util": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-6.2.0.tgz",
+      "integrity": "sha512-vb0XN9J2QGdZGIEKG2vXM+kUdEivUfU6Wmi5y0cg+LRhDYKnXIZ/Lz7XjFbHRR9VIKq2lVGLzGBkA++y2nOdOQ==",
+      "requires": {
+        "@types/bn.js": "^4.11.3",
+        "bn.js": "^4.11.0",
+        "create-hash": "^1.1.2",
+        "ethjs-util": "0.1.6",
+        "keccak": "^2.0.0",
+        "rlp": "^2.2.3",
+        "secp256k1": "^3.0.1"
       }
     },
     "ethjs-unit": {
@@ -4486,6 +4673,15 @@
         }
       }
     },
+    "ethjs-util": {
+      "version": "0.1.6",
+      "resolved": "https://registry.npmjs.org/ethjs-util/-/ethjs-util-0.1.6.tgz",
+      "integrity": "sha512-CUnVOQq7gSpDHZVVrQW8ExxUETWrnrvXYvYz55wOU8Uj4VCgw56XC2B/fVqQN+f7gmrnRHSLVnFAwsCuNwji8w==",
+      "requires": {
+        "is-hex-prefixed": "1.0.0",
+        "strip-hex-prefix": "1.0.0"
+      }
+    },
     "event-lite": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/event-lite/-/event-lite-0.1.2.tgz",
@@ -4644,6 +4840,21 @@
         }
       }
     },
+    "ext": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/ext/-/ext-1.4.0.tgz",
+      "integrity": "sha512-Key5NIsUxdqKg3vIsdw9dSuXpPCQ297y6wBjL30edxwPgt2E44WcWBZey/ZvUc6sERLTxKdyCu4gZFmUbk1Q7A==",
+      "requires": {
+        "type": "^2.0.0"
+      },
+      "dependencies": {
+        "type": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/type/-/type-2.0.0.tgz",
+          "integrity": "sha512-KBt58xCHry4Cejnc2ISQAF7QY+ORngsWfxezO68+12hKV6lQY8P/psIkcbjeHWn7MqcgciWJyCCevFMJdIXpow=="
+        }
+      }
+    },
     "extend": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
@@ -4672,7 +4883,7 @@
     },
     "external-editor": {
       "version": "2.2.0",
-      "resolved": "http://registry.npmjs.org/external-editor/-/external-editor-2.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/external-editor/-/external-editor-2.2.0.tgz",
       "integrity": "sha512-bSn6gvGxKt+b7+6TKEv1ZycHleA7aHhRHyAqJyp5pbUFuYYNIzpZnQDk7AsYckyWdEnTeAnay0aCy2aV6iTk9A==",
       "dev": true,
       "requires": {
@@ -4796,14 +5007,6 @@
         "websocket-driver": ">=0.5.1"
       }
     },
-    "fd-slicer": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz",
-      "integrity": "sha1-JcfInLH5B3+IkbvmHY85Dq4lbx4=",
-      "requires": {
-        "pend": "~1.2.0"
-      }
-    },
     "figgy-pudding": {
       "version": "3.5.1",
       "resolved": "https://registry.npmjs.org/figgy-pudding/-/figgy-pudding-3.5.1.tgz",
@@ -4858,10 +5061,10 @@
         }
       }
     },
-    "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=="
     },
     "filesize": {
       "version": "3.6.1",
@@ -4986,14 +5189,6 @@
         }
       }
     },
-    "for-each": {
-      "version": "0.3.3",
-      "resolved": "https://registry.npmjs.org/for-each/-/for-each-0.3.3.tgz",
-      "integrity": "sha512-jqYfLp7mo9vIyQf8ykW2v7A+2N4QjeCeI5+Dz9XraiO1ign81wjiH7Fb9vSOWvQfNtmSa4H2RoQTrrXivdUZmw==",
-      "requires": {
-        "is-callable": "^1.1.3"
-      }
-    },
     "for-in": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
@@ -5059,7 +5254,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -5072,7 +5267,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -5097,11 +5292,6 @@
         "readable-stream": "^2.0.0"
       }
     },
-    "fs-constants": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
-      "integrity": "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow=="
-    },
     "fs-extra": {
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-7.0.1.tgz",
@@ -5113,34 +5303,12 @@
         "universalify": "^0.1.0"
       }
     },
-    "fs-promise": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/fs-promise/-/fs-promise-2.0.3.tgz",
-      "integrity": "sha1-9k5PhUvPaJqovdy6JokW2z20aFQ=",
+    "fs-minipass": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.7.tgz",
+      "integrity": "sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==",
       "requires": {
-        "any-promise": "^1.3.0",
-        "fs-extra": "^2.0.0",
-        "mz": "^2.6.0",
-        "thenify-all": "^1.6.0"
-      },
-      "dependencies": {
-        "fs-extra": {
-          "version": "2.1.2",
-          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-2.1.2.tgz",
-          "integrity": "sha1-BGxwFjzvmq1GsOSn+kZ/si1x3jU=",
-          "requires": {
-            "graceful-fs": "^4.1.2",
-            "jsonfile": "^2.1.0"
-          }
-        },
-        "jsonfile": {
-          "version": "2.4.0",
-          "resolved": "http://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz",
-          "integrity": "sha1-NzaitCi4e72gzIO1P6PWM6NcKug=",
-          "requires": {
-            "graceful-fs": "^4.1.6"
-          }
-        }
+        "minipass": "^2.6.0"
       }
     },
     "fs-write-stream-atomic": {
@@ -5158,7 +5326,8 @@
     "fs.realpath": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
     },
     "fsevents": {
       "version": "1.2.4",
@@ -5180,7 +5349,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -5201,12 +5371,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -5221,17 +5393,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -5348,7 +5523,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -5360,6 +5536,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -5374,6 +5551,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -5381,12 +5559,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -5405,6 +5585,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -5485,7 +5666,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -5497,6 +5679,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -5582,7 +5765,8 @@
         "safe-buffer": {
           "version": "5.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -5618,6 +5802,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -5637,6 +5822,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -5680,26 +5866,17 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
-    "fstream": {
-      "version": "1.0.11",
-      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
-      "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
-      "requires": {
-        "graceful-fs": "^4.1.2",
-        "inherits": "~2.0.0",
-        "mkdirp": ">=0.5 0",
-        "rimraf": "2"
-      }
-    },
     "function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
@@ -5722,7 +5899,6 @@
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-4.1.0.tgz",
       "integrity": "sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==",
-      "dev": true,
       "requires": {
         "pump": "^3.0.0"
       }
@@ -5745,6 +5921,7 @@
       "version": "7.1.3",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
       "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+      "dev": true,
       "requires": {
         "fs.realpath": "^1.0.0",
         "inflight": "^1.0.4",
@@ -5805,7 +5982,7 @@
     },
     "globby": {
       "version": "8.0.1",
-      "resolved": "http://registry.npmjs.org/globby/-/globby-8.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-8.0.1.tgz",
       "integrity": "sha512-oMrYrJERnKBLXNLVTqhm3vPEdJ/b2ZE28xN4YARiix1NOIOBPEpOUnm844K1iu/BkphCaf2WNFwMszv8Soi1pw==",
       "dev": true,
       "requires": {
@@ -5827,31 +6004,21 @@
       }
     },
     "got": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/got/-/got-7.1.0.tgz",
-      "integrity": "sha512-Y5WMo7xKKq1muPsxD+KmrR8DH5auG7fBdDVueZwETwV6VytKyU9OX/ddpq2/1hp1vIPvVb4T81dKQz3BivkNLw==",
+      "version": "9.6.0",
+      "resolved": "https://registry.npmjs.org/got/-/got-9.6.0.tgz",
+      "integrity": "sha512-R7eWptXuGYxwijs0eV+v3o6+XH1IqVK8dJOEecQfTmkncw9AV4dcw/Dhxi8MdlqPthxxpZyizMzyg8RTmEsG+Q==",
       "requires": {
-        "decompress-response": "^3.2.0",
+        "@sindresorhus/is": "^0.14.0",
+        "@szmarczak/http-timer": "^1.1.2",
+        "cacheable-request": "^6.0.0",
+        "decompress-response": "^3.3.0",
         "duplexer3": "^0.1.4",
-        "get-stream": "^3.0.0",
-        "is-plain-obj": "^1.1.0",
-        "is-retry-allowed": "^1.0.0",
-        "is-stream": "^1.0.0",
-        "isurl": "^1.0.0-alpha5",
-        "lowercase-keys": "^1.0.0",
-        "p-cancelable": "^0.3.0",
-        "p-timeout": "^1.1.1",
-        "safe-buffer": "^5.0.1",
-        "timed-out": "^4.0.0",
-        "url-parse-lax": "^1.0.0",
-        "url-to-options": "^1.0.1"
-      },
-      "dependencies": {
-        "get-stream": {
-          "version": "3.0.0",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
-          "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ="
-        }
+        "get-stream": "^4.1.0",
+        "lowercase-keys": "^1.0.1",
+        "mimic-response": "^1.0.1",
+        "p-cancelable": "^1.0.0",
+        "to-readable-stream": "^1.0.0",
+        "url-parse-lax": "^3.0.0"
       }
     },
     "graceful-fs": {
@@ -5859,11 +6026,6 @@
       "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="
-    },
     "gzip-size": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/gzip-size/-/gzip-size-5.0.0.tgz",
@@ -6109,7 +6271,7 @@
       "dependencies": {
         "json5": {
           "version": "0.5.1",
-          "resolved": "http://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
           "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
           "dev": true
         },
@@ -6174,6 +6336,11 @@
         }
       }
     },
+    "http-cache-semantics": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/http-cache-semantics/-/http-cache-semantics-4.1.0.tgz",
+      "integrity": "sha512-carPklcUh7ROWRK7Cv27RPtdhYhUsela/ue5/jKzjegVvXDqM2ILE9Q2BGn9JZJh1g87cp56su/FgQSzcWS8cQ=="
+    },
     "http-deceiver": {
       "version": "1.2.7",
       "resolved": "https://registry.npmjs.org/http-deceiver/-/http-deceiver-1.2.7.tgz",
@@ -6455,6 +6622,7 @@
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
       "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "dev": true,
       "requires": {
         "once": "^1.3.0",
         "wrappy": "1"
@@ -6592,7 +6760,8 @@
     "is-callable": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.4.tgz",
-      "integrity": "sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA=="
+      "integrity": "sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==",
+      "dev": true
     },
     "is-ci": {
       "version": "1.2.1",
@@ -6687,9 +6856,9 @@
       "dev": true
     },
     "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",
@@ -6705,11 +6874,6 @@
       "resolved": "https://registry.npmjs.org/is-hex-prefixed/-/is-hex-prefixed-1.0.0.tgz",
       "integrity": "sha1-fY035q135dEnFIkTxXPggtd39VQ="
     },
-    "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="
-    },
     "is-number": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/is-number/-/is-number-3.0.0.tgz",
@@ -6801,9 +6965,9 @@
       "dev": true
     },
     "is-retry-allowed": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/is-retry-allowed/-/is-retry-allowed-1.1.0.tgz",
-      "integrity": "sha1-EaBgVotnM5REAz0BJaYaINVk+zQ="
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/is-retry-allowed/-/is-retry-allowed-1.2.0.tgz",
+      "integrity": "sha512-RUbUeKwvm3XG2VYamhJL1xFktgjvPzL0Hq8C+6yrWIswDy3BIXGqCxhxkc30N9jqK311gVU137K8Ei55/zVJRg=="
     },
     "is-stream": {
       "version": "1.1.0",
@@ -6924,9 +7088,9 @@
       }
     },
     "js-sha3": {
-      "version": "0.3.1",
-      "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.3.1.tgz",
-      "integrity": "sha1-hhIoAhQvCChQKg0d7h2V4lO7AkM="
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.8.0.tgz",
+      "integrity": "sha512-gF1cRrHhIzNfToc802P800N8PpXS+evLLXfsVpowqmAFR9uwbi89WvXg2QspOmXL8QL86J4T1EpFu+yUkwJY3Q=="
     },
     "js-tokens": {
       "version": "4.0.0",
@@ -6955,6 +7119,11 @@
       "integrity": "sha1-5CGiqOINawgZ3yiQj3glJrlt0f4=",
       "dev": true
     },
+    "json-buffer": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/json-buffer/-/json-buffer-3.0.0.tgz",
+      "integrity": "sha1-Wx85evx11ne96Lz8Dkfh+aPZqJg="
+    },
     "json-parse-better-errors": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
@@ -7009,7 +7178,6 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-4.0.0.tgz",
       "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
-      "dev": true,
       "requires": {
         "graceful-fs": "^4.1.6"
       }
@@ -7031,13 +7199,40 @@
         "verror": "1.10.0"
       }
     },
-    "keccakjs": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/keccakjs/-/keccakjs-0.2.1.tgz",
-      "integrity": "sha1-HWM6+QfvMFu/ny+mFtVsRFYd+k0=",
+    "keccak": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/keccak/-/keccak-2.1.0.tgz",
+      "integrity": "sha512-m1wbJRTo+gWbctZWay9i26v5fFnYkOn7D5PCxJ3fZUGUEb49dE1Pm4BREUYCt/aoO6di7jeoGmhvqN9Nzylm3Q==",
       "requires": {
-        "browserify-sha3": "^0.0.1",
-        "sha3": "^1.1.0"
+        "bindings": "^1.5.0",
+        "inherits": "^2.0.4",
+        "nan": "^2.14.0",
+        "safe-buffer": "^5.2.0"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
+        "nan": {
+          "version": "2.14.1",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.1.tgz",
+          "integrity": "sha512-isWHgVjnFjh2x2yuJ/tj3JbwoHu3UC2dX5G/88Cm24yB6YopVgxvBObDY7n5xW6ExmFhJpSEQqFPvq9zaXc8Jw=="
+        },
+        "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=="
+        }
+      }
+    },
+    "keyv": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/keyv/-/keyv-3.1.0.tgz",
+      "integrity": "sha512-9ykJ/46SN/9KPM/sichzQ7OvXyGDYKGTaDlKMGCAlg2UK8KRy4jb0d8sFc+0Tt0YYnThq8X2RZgCg74RPxgcVA==",
+      "requires": {
+        "json-buffer": "3.0.0"
       }
     },
     "killable": {
@@ -7086,7 +7281,7 @@
       "requires": {
         "aes-js": "^3.1.2",
         "msgpack-lite": "^0.1.26",
-        "web3": "^1.0.0-beta.37"
+        "web3": "^1.2.8"
       }
     },
     "levn": {
@@ -7169,7 +7364,7 @@
       "dependencies": {
         "json5": {
           "version": "0.5.1",
-          "resolved": "http://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
           "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
           "dev": true
         }
@@ -7288,6 +7483,7 @@
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-1.3.0.tgz",
       "integrity": "sha512-2w31R7SJtieJJnQtGc7RVL2StM2vGYVfqUOvUDxH6bC6aJTxPxTF0GnIgCyu7tjockiUWAYQRbxa7vKn34s5sQ==",
+      "dev": true,
       "requires": {
         "pify": "^3.0.0"
       }
@@ -7503,14 +7699,39 @@
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
       "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "dev": true,
       "requires": {
         "brace-expansion": "^1.1.7"
       }
     },
-    "minimist": {
-      "version": "0.0.8",
-      "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
-      "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+    "minimist": {
+      "version": "0.0.8",
+      "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+      "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+    },
+    "minipass": {
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.9.0.tgz",
+      "integrity": "sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==",
+      "requires": {
+        "safe-buffer": "^5.1.2",
+        "yallist": "^3.0.0"
+      },
+      "dependencies": {
+        "yallist": {
+          "version": "3.1.1",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
+          "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="
+        }
+      }
+    },
+    "minizlib": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.3.3.tgz",
+      "integrity": "sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==",
+      "requires": {
+        "minipass": "^2.9.0"
+      }
     },
     "mississippi": {
       "version": "2.0.0",
@@ -7580,14 +7801,9 @@
       }
     },
     "mock-fs": {
-      "version": "4.7.0",
-      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-4.7.0.tgz",
-      "integrity": "sha512-WlQNtUlzMRpvLHf8dqeUmNqfdPjGY29KrJF50Ldb4AcL+vQeR8QH3wQcFMgrhTwb1gHjZn9xggho+84tBskLgA=="
-    },
-    "mout": {
-      "version": "0.11.1",
-      "resolved": "https://registry.npmjs.org/mout/-/mout-0.11.1.tgz",
-      "integrity": "sha1-ujYR318OWx/7/QEWa48C0fX6K5k="
+      "version": "4.12.0",
+      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-4.12.0.tgz",
+      "integrity": "sha512-/P/HtrlvBxY4o/PzXY9cCNBrdylDNxg7gnrv2sMNxj+UJ2m8jSpl0/A6fuJeNAWr99ZvGWH8XCbE0vmnM5KupQ=="
     },
     "move-concurrently": {
       "version": "1.0.1",
@@ -7620,6 +7836,26 @@
         "isarray": "^1.0.0"
       }
     },
+    "multibase": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/multibase/-/multibase-0.6.1.tgz",
+      "integrity": "sha512-pFfAwyTjbbQgNc3G7D48JkJxWtoJoBMaR4xQUOuB8RnCgRqaYmWNFeJTTvrJ2w51bjLq2zTby6Rqj9TQ9elSUw==",
+      "requires": {
+        "base-x": "^3.0.8",
+        "buffer": "^5.5.0"
+      },
+      "dependencies": {
+        "buffer": {
+          "version": "5.6.0",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.6.0.tgz",
+          "integrity": "sha512-/gDYp/UtU0eA1ys8bOs9J6a+E/KWIY+DZ+Q2WESNUA0jFRsJOc0SNUO6xJ5SGA1xueg3NL65W6s+NY5l9cunuw==",
+          "requires": {
+            "base64-js": "^1.0.2",
+            "ieee754": "^1.1.4"
+          }
+        }
+      }
+    },
     "multicast-dns": {
       "version": "6.2.3",
       "resolved": "https://registry.npmjs.org/multicast-dns/-/multicast-dns-6.2.3.tgz",
@@ -7636,26 +7872,56 @@
       "integrity": "sha1-iZ8R2WhuXgXLkbNdXw5jt3PPyQE=",
       "dev": true
     },
+    "multicodec": {
+      "version": "0.5.7",
+      "resolved": "https://registry.npmjs.org/multicodec/-/multicodec-0.5.7.tgz",
+      "integrity": "sha512-PscoRxm3f+88fAtELwUnZxGDkduE2HD9Q6GHUOywQLjOGT/HAdhjLDYNZ1e7VR0s0TP0EwZ16LNUTFpoBGivOA==",
+      "requires": {
+        "varint": "^5.0.0"
+      }
+    },
+    "multihashes": {
+      "version": "0.4.19",
+      "resolved": "https://registry.npmjs.org/multihashes/-/multihashes-0.4.19.tgz",
+      "integrity": "sha512-ej74GAfA20imjj00RO5h34aY3pGUFyzn9FJZFWwdeUHlHTkKmv90FrNpvYT4jYf1XXCy5O/5EjVnxTaESgOM6A==",
+      "requires": {
+        "buffer": "^5.5.0",
+        "multibase": "^0.7.0",
+        "varint": "^5.0.0"
+      },
+      "dependencies": {
+        "buffer": {
+          "version": "5.6.0",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.6.0.tgz",
+          "integrity": "sha512-/gDYp/UtU0eA1ys8bOs9J6a+E/KWIY+DZ+Q2WESNUA0jFRsJOc0SNUO6xJ5SGA1xueg3NL65W6s+NY5l9cunuw==",
+          "requires": {
+            "base64-js": "^1.0.2",
+            "ieee754": "^1.1.4"
+          }
+        },
+        "multibase": {
+          "version": "0.7.0",
+          "resolved": "https://registry.npmjs.org/multibase/-/multibase-0.7.0.tgz",
+          "integrity": "sha512-TW8q03O0f6PNFTQDvh3xxH03c8CjGaaYrjkl9UQPG6rz53TQzzxJVCIWVjzcbN/Q5Y53Zd0IBQBMVktVgNx4Fg==",
+          "requires": {
+            "base-x": "^3.0.8",
+            "buffer": "^5.5.0"
+          }
+        }
+      }
+    },
     "mute-stream": {
       "version": "0.0.7",
       "resolved": "https://registry.npmjs.org/mute-stream/-/mute-stream-0.0.7.tgz",
       "integrity": "sha1-MHXOk7whuPq0PhvE2n6BFe0ee6s=",
       "dev": true
     },
-    "mz": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/mz/-/mz-2.7.0.tgz",
-      "integrity": "sha512-z81GNO7nnYMEhrGh9LeymoE4+Yr0Wn5McHIZMK5cfQCl+NDX08sCZgUc9/6MHni9IWuFLm1Z3HTCXu2z9fN62Q==",
-      "requires": {
-        "any-promise": "^1.0.0",
-        "object-assign": "^4.0.1",
-        "thenify-all": "^1.0.0"
-      }
-    },
     "nan": {
       "version": "2.11.1",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.11.1.tgz",
-      "integrity": "sha512-iji6k87OSXa0CcrLl9z+ZiYSuR2o+c0bGuNmXdrhTQTakxytAFsC56SArGYoiHlJlFoHSnvmhpceZJaXkVuOtA=="
+      "integrity": "sha512-iji6k87OSXa0CcrLl9z+ZiYSuR2o+c0bGuNmXdrhTQTakxytAFsC56SArGYoiHlJlFoHSnvmhpceZJaXkVuOtA==",
+      "dev": true,
+      "optional": true
     },
     "nano-json-stream-parser": {
       "version": "0.1.2",
@@ -7698,6 +7964,11 @@
       "integrity": "sha512-MFh0d/Wa7vkKO3Y3LlacqAEeHK0mckVqzDieUKTT+KGxi+zIpeVsFxymkIiRpbpDziHc290Xr9A1O4Om7otoRA==",
       "dev": true
     },
+    "next-tick": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/next-tick/-/next-tick-1.0.0.tgz",
+      "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw="
+    },
     "nice-try": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
@@ -7978,9 +8249,9 @@
       }
     },
     "oboe": {
-      "version": "2.1.3",
-      "resolved": "https://registry.npmjs.org/oboe/-/oboe-2.1.3.tgz",
-      "integrity": "sha1-K0hl29Rr6BIlcT9Om/5Lz09oCk8=",
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/oboe/-/oboe-2.1.4.tgz",
+      "integrity": "sha1-IMiM2wwVNxuwQRklfU/dNLCqSfY=",
       "requires": {
         "http-https": "^1.0.0"
       }
@@ -8056,7 +8327,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -8096,7 +8367,7 @@
         },
         "opn": {
           "version": "4.0.2",
-          "resolved": "http://registry.npmjs.org/opn/-/opn-4.0.2.tgz",
+          "resolved": "https://registry.npmjs.org/opn/-/opn-4.0.2.tgz",
           "integrity": "sha1-erwi5kTf9jsKltWrfyeQwPAavJU=",
           "dev": true,
           "requires": {
@@ -8106,7 +8377,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -8207,7 +8478,7 @@
         },
         "get-stream": {
           "version": "3.0.0",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
           "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
           "dev": true
         }
@@ -8220,9 +8491,9 @@
       "dev": true
     },
     "p-cancelable": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-0.3.0.tgz",
-      "integrity": "sha512-RVbZPLso8+jFeq1MfNvgXtCRED2raz/dKpacfTNxsx6pLEpEomM7gah6VeHSYV3+vo0OAi4MkArtQcWWXuQoyw=="
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-1.1.0.tgz",
+      "integrity": "sha512-s73XxOZ4zpt1edZYZzvhqFa6uvQc1vwUa0K0BdtIZgQMAJj9IbebH+JkgKZc9h+B05PKHLOTl4ajG1BmNrVZlw=="
     },
     "p-defer": {
       "version": "1.0.0",
@@ -8318,13 +8589,9 @@
       }
     },
     "parse-headers": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/parse-headers/-/parse-headers-2.0.1.tgz",
-      "integrity": "sha1-aug6eqJanZtwCswoaYzR8e1+lTY=",
-      "requires": {
-        "for-each": "^0.3.2",
-        "trim": "0.0.1"
-      }
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/parse-headers/-/parse-headers-2.0.3.tgz",
+      "integrity": "sha512-QhhZ+DCCit2Coi2vmAKbq5RGTRcQUOE2+REgv8vdyu7MnYx2eZztegqtTx99TZ86GTIwqiy3+4nQTWZ2tgmdCA=="
     },
     "parse-json": {
       "version": "4.0.0",
@@ -8368,7 +8635,8 @@
     "path-is-absolute": {
       "version": "1.0.1",
       "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true
     },
     "path-is-inside": {
       "version": "1.0.2",
@@ -8414,11 +8682,6 @@
         "sha.js": "^2.4.8"
       }
     },
-    "pend": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/pend/-/pend-1.2.0.tgz",
-      "integrity": "sha1-elfrVQpng/kRUzH89GY9XI4AelA="
-    },
     "performance-now": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
@@ -8427,17 +8690,20 @@
     "pify": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
-      "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+      "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+      "dev": true
     },
     "pinkie": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/pinkie/-/pinkie-2.0.4.tgz",
-      "integrity": "sha1-clVrgM+g1IqXToDnckjoDtT3+HA="
+      "integrity": "sha1-clVrgM+g1IqXToDnckjoDtT3+HA=",
+      "dev": true
     },
     "pinkie-promise": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/pinkie-promise/-/pinkie-promise-2.0.1.tgz",
       "integrity": "sha1-ITXW36ejWMBprJsXh3YogihFD/o=",
+      "dev": true,
       "requires": {
         "pinkie": "^2.0.0"
       }
@@ -9038,9 +9304,9 @@
       "dev": true
     },
     "prepend-http": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-1.0.4.tgz",
-      "integrity": "sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-2.0.0.tgz",
+      "integrity": "sha1-6SQ0v6XqjBn0HN/UAddBo8gZ2Jc="
     },
     "prettier": {
       "version": "1.13.7",
@@ -9073,7 +9339,8 @@
     "process-nextick-args": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
-      "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw=="
+      "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw==",
+      "dev": true
     },
     "progress": {
       "version": "2.0.1",
@@ -9130,7 +9397,6 @@
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
       "integrity": "sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==",
-      "dev": true,
       "requires": {
         "end-of-stream": "^1.1.0",
         "once": "^1.3.1"
@@ -9220,11 +9486,6 @@
         "safe-buffer": "^5.1.0"
       }
     },
-    "randomhex": {
-      "version": "0.1.5",
-      "resolved": "https://registry.npmjs.org/randomhex/-/randomhex-0.1.5.tgz",
-      "integrity": "sha1-us7vmCMpCRQA8qKRLGzQLxCU9YU="
-    },
     "range-parser": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.0.tgz",
@@ -9266,6 +9527,7 @@
       "version": "2.3.6",
       "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
       "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+      "dev": true,
       "requires": {
         "core-util-is": "~1.0.0",
         "inherits": "~2.0.3",
@@ -9329,7 +9591,7 @@
     },
     "regexpp": {
       "version": "1.1.0",
-      "resolved": "http://registry.npmjs.org/regexpp/-/regexpp-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-1.1.0.tgz",
       "integrity": "sha512-LOPw8FpgdQF9etWMaAfG/WRthIdXJGYp4mJ2Jgn/2lpkbod9jPn0t9UqN7AxBOKNfzRbYyVfgc7Vk4t/MpnXgw==",
       "dev": true
     },
@@ -9403,7 +9665,7 @@
         },
         "css-select": {
           "version": "1.2.0",
-          "resolved": "http://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
           "integrity": "sha1-KzoRBTnFNV8c2NMUYj6HCxIeyFg=",
           "dev": true,
           "requires": {
@@ -9425,7 +9687,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -9565,6 +9827,14 @@
       "integrity": "sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=",
       "dev": true
     },
+    "responselike": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/responselike/-/responselike-1.0.2.tgz",
+      "integrity": "sha1-kYcg7ztjHFZCvgaPFa3lpG9Loec=",
+      "requires": {
+        "lowercase-keys": "^1.0.0"
+      }
+    },
     "restore-cursor": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-2.0.0.tgz",
@@ -9597,6 +9867,7 @@
       "version": "2.6.2",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
       "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
+      "dev": true,
       "requires": {
         "glob": "^7.0.5"
       }
@@ -9610,6 +9881,14 @@
         "inherits": "^2.0.1"
       }
     },
+    "rlp": {
+      "version": "2.2.5",
+      "resolved": "https://registry.npmjs.org/rlp/-/rlp-2.2.5.tgz",
+      "integrity": "sha512-y1QxTQOp0OZnjn19FxBmped4p+BSKPHwGndaqrESseyd2xXZtcgR3yuTIosh8CaMaOii9SKIYerBXnV/CpJ3qw==",
+      "requires": {
+        "bn.js": "^4.11.1"
+      }
+    },
     "run-async": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/run-async/-/run-async-2.3.0.tgz",
@@ -9701,51 +9980,44 @@
         }
       }
     },
-    "scrypt": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/scrypt/-/scrypt-6.0.3.tgz",
-      "integrity": "sha1-BOAUpWgrU/pQwtXM4WfXGcBthw0=",
-      "requires": {
-        "nan": "^2.0.8"
-      }
-    },
-    "scrypt-js": {
-      "version": "2.0.3",
-      "resolved": "http://registry.npmjs.org/scrypt-js/-/scrypt-js-2.0.3.tgz",
-      "integrity": "sha1-uwBAvgMEPamgEqLOqfyfhSz8h9Q="
-    },
-    "scrypt.js": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/scrypt.js/-/scrypt.js-0.2.0.tgz",
-      "integrity": "sha1-r40UZbcemZARC+38WTuUeeA6ito=",
-      "requires": {
-        "scrypt": "^6.0.2",
-        "scryptsy": "^1.2.1"
-      }
-    },
     "scryptsy": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/scryptsy/-/scryptsy-1.2.1.tgz",
-      "integrity": "sha1-oyJfpLJST4AnAHYeKFW987LZIWM=",
-      "requires": {
-        "pbkdf2": "^3.0.3"
-      }
-    },
-    "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=",
-      "requires": {
-        "commander": "~2.8.1"
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/scryptsy/-/scryptsy-2.1.0.tgz",
+      "integrity": "sha512-1CdSqHQowJBnMAFyPEBRfqag/YP9OF394FV+4YREIJX4ljD7OxvQRDayyoyyCk+senRjSkP6VnUNQmVQqB6g7w=="
+    },
+    "secp256k1": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-3.8.0.tgz",
+      "integrity": "sha512-k5ke5avRZbtl9Tqx/SA7CbY3NF6Ro+Sj9cZxezFzuBlLDmyqPiL8hJJ+EmzD8Ig4LUDByHJ3/iPOVoRixs/hmw==",
+      "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": "^6.5.2",
+        "nan": "^2.14.0",
+        "safe-buffer": "^5.1.2"
       },
       "dependencies": {
-        "commander": {
-          "version": "2.8.1",
-          "resolved": "http://registry.npmjs.org/commander/-/commander-2.8.1.tgz",
-          "integrity": "sha1-Br42f+v9oMMwqh4qBy09yXYkJdQ=",
+        "elliptic": {
+          "version": "6.5.2",
+          "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.2.tgz",
+          "integrity": "sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==",
           "requires": {
-            "graceful-readlink": ">= 1.0.0"
+            "bn.js": "^4.4.0",
+            "brorand": "^1.0.1",
+            "hash.js": "^1.0.0",
+            "hmac-drbg": "^1.0.0",
+            "inherits": "^2.0.1",
+            "minimalistic-assert": "^1.0.0",
+            "minimalistic-crypto-utils": "^1.0.0"
           }
+        },
+        "nan": {
+          "version": "2.14.1",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.1.tgz",
+          "integrity": "sha512-isWHgVjnFjh2x2yuJ/tj3JbwoHu3UC2dX5G/88Cm24yB6YopVgxvBObDY7n5xW6ExmFhJpSEQqFPvq9zaXc8Jw=="
         }
       }
     },
@@ -9924,21 +10196,6 @@
         "safe-buffer": "^5.0.1"
       }
     },
-    "sha3": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/sha3/-/sha3-1.2.2.tgz",
-      "integrity": "sha1-pmxQmN5MJbyIM27ItIF9AFvKe6k=",
-      "requires": {
-        "nan": "2.10.0"
-      },
-      "dependencies": {
-        "nan": {
-          "version": "2.10.0",
-          "resolved": "http://registry.npmjs.org/nan/-/nan-2.10.0.tgz",
-          "integrity": "sha512-bAdJv7fBLhWC+/Bls0Oza+mvTaNQtP+1RyhhhvD95pgUJz6XM5IzgmxOkItJ9tkoCiplvAnXI1tNmmUD/eScyA=="
-        }
-      }
-    },
     "shebang-command": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-1.2.0.tgz",
@@ -10484,6 +10741,7 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
       "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
       "requires": {
         "safe-buffer": "~5.1.0"
       }
@@ -10497,14 +10755,6 @@
         "ansi-regex": "^3.0.0"
       }
     },
-    "strip-dirs": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/strip-dirs/-/strip-dirs-2.1.0.tgz",
-      "integrity": "sha512-JOCxOeKLm2CAS73y/U4ZeZPTkE+gNVCzKt7Eox84Iej1LT/2pTWYpZKJuxwQpvX1LiZb1xokNR7RLfuBAa7T3g==",
-      "requires": {
-        "is-natural-number": "^4.0.1"
-      }
-    },
     "strip-eof": {
       "version": "1.0.0",
       "resolved": "http://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
@@ -10587,49 +10837,84 @@
       }
     },
     "swarm-js": {
-      "version": "0.1.37",
-      "resolved": "https://registry.npmjs.org/swarm-js/-/swarm-js-0.1.37.tgz",
-      "integrity": "sha512-G8gi5fcXP/2upwiuOShJ258sIufBVztekgobr3cVgYXObZwJ5AXLqZn52AI+/ffft29pJexF9WNdUxjlkVehoQ==",
+      "version": "0.1.40",
+      "resolved": "https://registry.npmjs.org/swarm-js/-/swarm-js-0.1.40.tgz",
+      "integrity": "sha512-yqiOCEoA4/IShXkY3WKwP5PvZhmoOOD8clsKA7EEcRILMkTEYHCQ21HDCAcVpmIxZq4LyZvWeRJ6quIyHk1caA==",
       "requires": {
         "bluebird": "^3.5.0",
         "buffer": "^5.0.5",
-        "decompress": "^4.0.0",
         "eth-lib": "^0.1.26",
-        "fs-extra": "^2.1.2",
-        "fs-promise": "^2.0.0",
+        "fs-extra": "^4.0.2",
         "got": "^7.1.0",
         "mime-types": "^2.1.16",
         "mkdirp-promise": "^5.0.1",
         "mock-fs": "^4.1.0",
         "setimmediate": "^1.0.5",
-        "tar.gz": "^1.0.5",
-        "xhr-request-promise": "^0.1.2"
+        "tar": "^4.0.2",
+        "xhr-request": "^1.0.1"
       },
       "dependencies": {
         "buffer": {
-          "version": "5.2.1",
-          "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.2.1.tgz",
-          "integrity": "sha512-c+Ko0loDaFfuPWiL02ls9Xd3GO3cPVmUobQ6t3rXNUk304u6hGq+8N/kFi+QEIKhzK3uwolVhLzszmfLmMLnqg==",
+          "version": "5.6.0",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.6.0.tgz",
+          "integrity": "sha512-/gDYp/UtU0eA1ys8bOs9J6a+E/KWIY+DZ+Q2WESNUA0jFRsJOc0SNUO6xJ5SGA1xueg3NL65W6s+NY5l9cunuw==",
           "requires": {
             "base64-js": "^1.0.2",
             "ieee754": "^1.1.4"
           }
         },
         "fs-extra": {
-          "version": "2.1.2",
-          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-2.1.2.tgz",
-          "integrity": "sha1-BGxwFjzvmq1GsOSn+kZ/si1x3jU=",
+          "version": "4.0.3",
+          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-4.0.3.tgz",
+          "integrity": "sha512-q6rbdDd1o2mAnQreO7YADIxf/Whx4AHBiRf6d+/cVT8h44ss+lHgxf1FemcqDnQt9X3ct4McHr+JMGlYSsK7Cg==",
           "requires": {
             "graceful-fs": "^4.1.2",
-            "jsonfile": "^2.1.0"
+            "jsonfile": "^4.0.0",
+            "universalify": "^0.1.0"
           }
         },
-        "jsonfile": {
-          "version": "2.4.0",
-          "resolved": "http://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz",
-          "integrity": "sha1-NzaitCi4e72gzIO1P6PWM6NcKug=",
+        "get-stream": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+          "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ="
+        },
+        "got": {
+          "version": "7.1.0",
+          "resolved": "https://registry.npmjs.org/got/-/got-7.1.0.tgz",
+          "integrity": "sha512-Y5WMo7xKKq1muPsxD+KmrR8DH5auG7fBdDVueZwETwV6VytKyU9OX/ddpq2/1hp1vIPvVb4T81dKQz3BivkNLw==",
+          "requires": {
+            "decompress-response": "^3.2.0",
+            "duplexer3": "^0.1.4",
+            "get-stream": "^3.0.0",
+            "is-plain-obj": "^1.1.0",
+            "is-retry-allowed": "^1.0.0",
+            "is-stream": "^1.0.0",
+            "isurl": "^1.0.0-alpha5",
+            "lowercase-keys": "^1.0.0",
+            "p-cancelable": "^0.3.0",
+            "p-timeout": "^1.1.1",
+            "safe-buffer": "^5.0.1",
+            "timed-out": "^4.0.0",
+            "url-parse-lax": "^1.0.0",
+            "url-to-options": "^1.0.1"
+          }
+        },
+        "p-cancelable": {
+          "version": "0.3.0",
+          "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-0.3.0.tgz",
+          "integrity": "sha512-RVbZPLso8+jFeq1MfNvgXtCRED2raz/dKpacfTNxsx6pLEpEomM7gah6VeHSYV3+vo0OAi4MkArtQcWWXuQoyw=="
+        },
+        "prepend-http": {
+          "version": "1.0.4",
+          "resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-1.0.4.tgz",
+          "integrity": "sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw="
+        },
+        "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=",
           "requires": {
-            "graceful-fs": "^4.1.6"
+            "prepend-http": "^1.0.1"
           }
         }
       }
@@ -10662,7 +10947,7 @@
         },
         "fast-deep-equal": {
           "version": "1.1.0",
-          "resolved": "http://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
           "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
           "dev": true
         },
@@ -10681,45 +10966,23 @@
       "dev": true
     },
     "tar": {
-      "version": "2.2.1",
-      "resolved": "http://registry.npmjs.org/tar/-/tar-2.2.1.tgz",
-      "integrity": "sha1-jk0qJWwOIYXGsYrWlK7JaLg8sdE=",
-      "requires": {
-        "block-stream": "*",
-        "fstream": "^1.0.2",
-        "inherits": "2"
-      }
-    },
-    "tar-stream": {
-      "version": "1.6.2",
-      "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-1.6.2.tgz",
-      "integrity": "sha512-rzS0heiNf8Xn7/mpdSVVSMAWAoy9bfb1WOTYC78Z0UQKeKa/CWS8FOq0lKGNa8DWKAn9gxjCvMLYc5PGXYlK2A==",
-      "requires": {
-        "bl": "^1.0.0",
-        "buffer-alloc": "^1.2.0",
-        "end-of-stream": "^1.0.0",
-        "fs-constants": "^1.0.0",
-        "readable-stream": "^2.3.0",
-        "to-buffer": "^1.1.1",
-        "xtend": "^4.0.0"
-      }
-    },
-    "tar.gz": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/tar.gz/-/tar.gz-1.0.7.tgz",
-      "integrity": "sha512-uhGatJvds/3diZrETqMj4RxBR779LKlIE74SsMcn5JProZsfs9j0QBwWO1RW+IWNJxS2x8Zzra1+AW6OQHWphg==",
-      "requires": {
-        "bluebird": "^2.9.34",
-        "commander": "^2.8.1",
-        "fstream": "^1.0.8",
-        "mout": "^0.11.0",
-        "tar": "^2.1.1"
+      "version": "4.4.13",
+      "resolved": "http://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
+      "integrity": "sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==",
+      "requires": {
+        "chownr": "^1.1.1",
+        "fs-minipass": "^1.2.5",
+        "minipass": "^2.8.6",
+        "minizlib": "^1.2.1",
+        "mkdirp": "^0.5.0",
+        "safe-buffer": "^5.1.2",
+        "yallist": "^3.0.3"
       },
       "dependencies": {
-        "bluebird": {
-          "version": "2.11.0",
-          "resolved": "http://registry.npmjs.org/bluebird/-/bluebird-2.11.0.tgz",
-          "integrity": "sha1-U0uQM8AiyVecVro7Plpcqvu2UOE="
+        "yallist": {
+          "version": "3.1.1",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
+          "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="
         }
       }
     },
@@ -10892,22 +11155,6 @@
       "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
       "dev": true
     },
-    "thenify": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.0.tgz",
-      "integrity": "sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=",
-      "requires": {
-        "any-promise": "^1.0.0"
-      }
-    },
-    "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=",
-      "requires": {
-        "thenify": ">= 3.1.0 < 4"
-      }
-    },
     "thread-loader": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-1.2.0.tgz",
@@ -10933,7 +11180,8 @@
     "through": {
       "version": "2.3.8",
       "resolved": "http://registry.npmjs.org/through/-/through-2.3.8.tgz",
-      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
+      "dev": true
     },
     "through2": {
       "version": "2.0.5",
@@ -10991,11 +11239,6 @@
       "integrity": "sha1-fSKbH8xjfkZsoIEYCDanqr/4P0M=",
       "dev": true
     },
-    "to-buffer": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/to-buffer/-/to-buffer-1.1.1.tgz",
-      "integrity": "sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg=="
-    },
     "to-fast-properties": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
@@ -11022,6 +11265,11 @@
         }
       }
     },
+    "to-readable-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/to-readable-stream/-/to-readable-stream-1.0.0.tgz",
+      "integrity": "sha512-Iq25XBt6zD5npPhlLVXGFN3/gyR2/qODcKNNyTMd4vbm39HUaOiAM4PMq0eMVC/Tkxz+Zjdsc55g9yyz+Yq00Q=="
+    },
     "to-regex": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/to-regex/-/to-regex-3.0.2.tgz",
@@ -11083,11 +11331,6 @@
         }
       }
     },
-    "trim": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/trim/-/trim-0.0.1.tgz",
-      "integrity": "sha1-WFhUf2spB1fulczMZm+1AITEYN0="
-    },
     "trim-right": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz",
@@ -11125,6 +11368,11 @@
       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
     },
+    "type": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/type/-/type-1.2.0.tgz",
+      "integrity": "sha512-+5nt5AAniqsCnu2cEQQdpzCAh33kVx8n0VoFidKpB1dVVLAN/F+bgVOqOJqOnEnrhp222clB5p3vUlD+1QAnfg=="
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -11180,36 +11428,10 @@
       "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
       "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og=="
     },
-    "unbzip2-stream": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/unbzip2-stream/-/unbzip2-stream-1.3.1.tgz",
-      "integrity": "sha512-fIZnvdjblYs7Cru/xC6tCPVhz7JkYcVQQkePwMLyQELzYTds2Xn8QefPVnvdVhhZqubxNA1cASXEH5wcK0Bucw==",
-      "requires": {
-        "buffer": "^3.0.1",
-        "through": "^2.3.6"
-      },
-      "dependencies": {
-        "base64-js": {
-          "version": "0.0.8",
-          "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-0.0.8.tgz",
-          "integrity": "sha1-EQHpVE9KdrG8OybUUsqW16NeeXg="
-        },
-        "buffer": {
-          "version": "3.6.0",
-          "resolved": "http://registry.npmjs.org/buffer/-/buffer-3.6.0.tgz",
-          "integrity": "sha1-pyyTb3e5a/UvX357RnGAYoVR3vs=",
-          "requires": {
-            "base64-js": "0.0.8",
-            "ieee754": "^1.1.4",
-            "isarray": "^1.0.0"
-          }
-        }
-      }
-    },
     "underscore": {
-      "version": "1.8.3",
-      "resolved": "http://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
-      "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+      "version": "1.9.1",
+      "resolved": "http://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
+      "integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg=="
     },
     "unicode-canonical-property-names-ecmascript": {
       "version": "1.0.4",
@@ -11307,8 +11529,7 @@
     "universalify": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
-      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
-      "dev": true
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="
     },
     "unpipe": {
       "version": "1.0.0",
@@ -11446,11 +11667,11 @@
       }
     },
     "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=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/url-parse-lax/-/url-parse-lax-3.0.0.tgz",
+      "integrity": "sha1-FrXK/Afb42dsGxmZF3gj1lA6yww=",
       "requires": {
-        "prepend-http": "^1.0.1"
+        "prepend-http": "^2.0.0"
       }
     },
     "url-set-query": {
@@ -11470,9 +11691,9 @@
       "dev": true
     },
     "utf8": {
-      "version": "2.1.1",
-      "resolved": "http://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
-      "integrity": "sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g="
+      "version": "3.0.0",
+      "resolved": "http://registry.npmjs.org/utf8/-/utf8-3.0.0.tgz",
+      "integrity": "sha512-E8VjFIQ/TyQgp+TZfS6l8yp/xWppSAHzidGiRrqe4bK4XP9pTRyKFgGJpO3SN7zdX4DeomTrwaseCHovfpFcqQ=="
     },
     "util": {
       "version": "0.10.4",
@@ -11486,7 +11707,8 @@
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "dev": true
     },
     "util.promisify": {
       "version": "1.0.0",
@@ -11524,6 +11746,11 @@
         "spdx-expression-parse": "^3.0.0"
       }
     },
+    "varint": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/varint/-/varint-5.0.0.tgz",
+      "integrity": "sha1-2Ca4n3SQcy+rwMDtaT7Uddyynr8="
+    },
     "vary": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
@@ -11700,297 +11927,328 @@
       }
     },
     "web3": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3/-/web3-1.0.0-beta.37.tgz",
-      "integrity": "sha512-8XLgUspdzicC/xHG82TLrcF/Fxzj2XYNJ1KTYnepOI77bj5rvpsxxwHYBWQ6/JOjk0HkZqoBfnXWgcIHCDhZhQ==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3/-/web3-1.2.8.tgz",
+      "integrity": "sha512-rXUn16VKxn2aIe9v0KX+bSm2JXdq/Vnj3lZ0Rub2Q5YUSycHdCBaDtJRukl/jB5ygAdyr5/cUwvJzhNDJSYsGw==",
       "requires": {
-        "web3-bzz": "1.0.0-beta.37",
-        "web3-core": "1.0.0-beta.37",
-        "web3-eth": "1.0.0-beta.37",
-        "web3-eth-personal": "1.0.0-beta.37",
-        "web3-net": "1.0.0-beta.37",
-        "web3-shh": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "web3-bzz": "1.2.8",
+        "web3-core": "1.2.8",
+        "web3-eth": "1.2.8",
+        "web3-eth-personal": "1.2.8",
+        "web3-net": "1.2.8",
+        "web3-shh": "1.2.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-bzz": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-bzz/-/web3-bzz-1.0.0-beta.37.tgz",
-      "integrity": "sha512-E+dho49Nsm/QpQvYWOF35YDsQrMvLB19AApENxhlQsu6HpWQt534DQul0t3Y/aAh8rlKD6Kanxt8LhHDG3vejQ==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-bzz/-/web3-bzz-1.2.8.tgz",
+      "integrity": "sha512-jbi24/s2tT7FYuN+ktRvTa5em0GxhqcIYQ8FnD3Zb/ZoEPi+/7rH0Hh+WDol0pSZL+wdz/iM+Z2C9NE42z6EmQ==",
       "requires": {
-        "got": "7.1.0",
-        "swarm-js": "0.1.37",
-        "underscore": "1.8.3"
+        "@types/node": "^10.12.18",
+        "got": "9.6.0",
+        "swarm-js": "^0.1.40",
+        "underscore": "1.9.1"
       }
     },
     "web3-core": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-core/-/web3-core-1.0.0-beta.37.tgz",
-      "integrity": "sha512-cIwEqCj7OJyefQNauI0HOgW4sSaOQ98V99H2/HEIlnCZylsDzfw7gtQUdwnRFiIyIxjbWy3iWsjwDPoXNPZBYg==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-core/-/web3-core-1.2.8.tgz",
+      "integrity": "sha512-hvlYWyE1UcLoGa6qF1GoxGgi1quFsZOdwIUIVsAp+sp0plXp/Nqva2lAjJ+FFyWtVKbC7Zq+qwTJ4iP1aN0vTg==",
       "requires": {
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-core-method": "1.0.0-beta.37",
-        "web3-core-requestmanager": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "@types/bn.js": "^4.11.4",
+        "@types/node": "^12.6.1",
+        "bignumber.js": "^9.0.0",
+        "web3-core-helpers": "1.2.8",
+        "web3-core-method": "1.2.8",
+        "web3-core-requestmanager": "1.2.8",
+        "web3-utils": "1.2.8"
+      },
+      "dependencies": {
+        "@types/node": {
+          "version": "12.12.44",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.12.44.tgz",
+          "integrity": "sha512-jM6QVv0Sm5d3nW+nUD5jSzPcO6oPqboitSNcwgBay9hifVq/Rauq1PYnROnsmuw45JMBiTnsPAno0bKu2e2xrg=="
+        }
       }
     },
     "web3-core-helpers": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-core-helpers/-/web3-core-helpers-1.0.0-beta.37.tgz",
-      "integrity": "sha512-efaLOzN28RMnbugnyelgLwPWWaSwElQzcAJ/x3PZu+uPloM/lE5x0YuBKvIh7/PoSMlHqtRWj1B8CpuQOUQ5Ew==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-core-helpers/-/web3-core-helpers-1.2.8.tgz",
+      "integrity": "sha512-Wrl7ZPKn3Xyg0Hl5+shDnJcLP+EtTfThmQ1eCJLcg/BZqvLUR1SkOslNlhEojcYeBwhhymAKs8dfQbtYi+HMnw==",
       "requires": {
-        "underscore": "1.8.3",
-        "web3-eth-iban": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "underscore": "1.9.1",
+        "web3-eth-iban": "1.2.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-core-method": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-core-method/-/web3-core-method-1.0.0-beta.37.tgz",
-      "integrity": "sha512-pKWFUeqnVmzx3VrZg+CseSdrl/Yrk2ioid/HzolNXZE6zdoITZL0uRjnsbqXGEzgRRd1Oe/pFndpTlRsnxXloA==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-core-method/-/web3-core-method-1.2.8.tgz",
+      "integrity": "sha512-69qbvOgx0Frw46dXvEKzYgtaPXpUaQAlQmczgb0ZUBHsEU2K7jTtFgBy6kVBgAwsXDvoZ99AX4SjpY2dTMwPkw==",
       "requires": {
-        "underscore": "1.8.3",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-core-promievent": "1.0.0-beta.37",
-        "web3-core-subscriptions": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "underscore": "1.9.1",
+        "web3-core-helpers": "1.2.8",
+        "web3-core-promievent": "1.2.8",
+        "web3-core-subscriptions": "1.2.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-core-promievent": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-core-promievent/-/web3-core-promievent-1.0.0-beta.37.tgz",
-      "integrity": "sha512-GTF2r1lP8nJBeA5Gxq5yZpJy9l8Fb9CXGZPfF8jHvaRdQHtm2Z+NDhqYmF833lcdkokRSyfPcXlz1mlWeClFpg==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-core-promievent/-/web3-core-promievent-1.2.8.tgz",
+      "integrity": "sha512-3EdRieaHpBVVhfGjoREQfdoCM3xC0WwWjXXzT6oTldotfYC38kwk/GW8c8txYiLP/KxhslAN1cJSlXNOJjKSog==",
       "requires": {
-        "any-promise": "1.3.0",
-        "eventemitter3": "1.1.1"
+        "eventemitter3": "3.1.2"
       },
       "dependencies": {
         "eventemitter3": {
-          "version": "1.1.1",
-          "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-1.1.1.tgz",
-          "integrity": "sha1-R3hr2qCHyvext15zq8XH1UAVjNA="
+          "version": "3.1.2",
+          "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+          "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
         }
       }
     },
     "web3-core-requestmanager": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-core-requestmanager/-/web3-core-requestmanager-1.0.0-beta.37.tgz",
-      "integrity": "sha512-66VUqye5BGp1Zz1r8psCxdNH+GtTjaFwroum2Osx+wbC5oRjAiXkkadiitf6wRb+edodjEMPn49u7B6WGNuewQ==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-core-requestmanager/-/web3-core-requestmanager-1.2.8.tgz",
+      "integrity": "sha512-bwc2ABG6yzgTy28fv4t59g+tf6+UmTRMoF8HqTeiNDffoMKP2akyKFZeu1oD2gE7j/7GA75TAUjwJ7pH9ek1MA==",
       "requires": {
-        "underscore": "1.8.3",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-providers-http": "1.0.0-beta.37",
-        "web3-providers-ipc": "1.0.0-beta.37",
-        "web3-providers-ws": "1.0.0-beta.37"
+        "underscore": "1.9.1",
+        "web3-core-helpers": "1.2.8",
+        "web3-providers-http": "1.2.8",
+        "web3-providers-ipc": "1.2.8",
+        "web3-providers-ws": "1.2.8"
       }
     },
     "web3-core-subscriptions": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-core-subscriptions/-/web3-core-subscriptions-1.0.0-beta.37.tgz",
-      "integrity": "sha512-FdXl8so9kwkRRWziuCSpFsAuAdg9KvpXa1fQlT16uoGcYYfxwFO/nkwyBGQzkZt7emShI2IRugcazyPCZDwkOA==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-core-subscriptions/-/web3-core-subscriptions-1.2.8.tgz",
+      "integrity": "sha512-wmsRJ4ipwoF1mlOR+Oo8JdKigpkoVNQtqiRUuyQrTVhJx7GBuSaAIenpBYlkucC+RgByoGybR7Q3tTNJ6z/2tQ==",
       "requires": {
-        "eventemitter3": "1.1.1",
-        "underscore": "1.8.3",
-        "web3-core-helpers": "1.0.0-beta.37"
+        "eventemitter3": "3.1.2",
+        "underscore": "1.9.1",
+        "web3-core-helpers": "1.2.8"
       },
       "dependencies": {
         "eventemitter3": {
-          "version": "1.1.1",
-          "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-1.1.1.tgz",
-          "integrity": "sha1-R3hr2qCHyvext15zq8XH1UAVjNA="
+          "version": "3.1.2",
+          "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+          "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
         }
       }
     },
     "web3-eth": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-eth/-/web3-eth-1.0.0-beta.37.tgz",
-      "integrity": "sha512-Eb3aGtkz3G9q+Z9DKgSQNbn/u8RtcZQQ0R4sW9hy5KK47GoT6vab5c6DiD3QWzI0BzitHzR5Ji+3VHf/hPUGgw==",
-      "requires": {
-        "underscore": "1.8.3",
-        "web3-core": "1.0.0-beta.37",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-core-method": "1.0.0-beta.37",
-        "web3-core-subscriptions": "1.0.0-beta.37",
-        "web3-eth-abi": "1.0.0-beta.37",
-        "web3-eth-accounts": "1.0.0-beta.37",
-        "web3-eth-contract": "1.0.0-beta.37",
-        "web3-eth-ens": "1.0.0-beta.37",
-        "web3-eth-iban": "1.0.0-beta.37",
-        "web3-eth-personal": "1.0.0-beta.37",
-        "web3-net": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-eth/-/web3-eth-1.2.8.tgz",
+      "integrity": "sha512-CEnVIIR1zZQ9vQh/kPFAUbvbbHYkC84y15jdhRUDDGR6bs4FxO2NNWR2YDtNe038lrz747tZahsC9kEiGkJFZQ==",
+      "requires": {
+        "underscore": "1.9.1",
+        "web3-core": "1.2.8",
+        "web3-core-helpers": "1.2.8",
+        "web3-core-method": "1.2.8",
+        "web3-core-subscriptions": "1.2.8",
+        "web3-eth-abi": "1.2.8",
+        "web3-eth-accounts": "1.2.8",
+        "web3-eth-contract": "1.2.8",
+        "web3-eth-ens": "1.2.8",
+        "web3-eth-iban": "1.2.8",
+        "web3-eth-personal": "1.2.8",
+        "web3-net": "1.2.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-eth-abi": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-eth-abi/-/web3-eth-abi-1.0.0-beta.37.tgz",
-      "integrity": "sha512-g9DKZGM2OqwKp/tX3W/yihcj7mQCtJ6CXyZXEIZfuDyRBED/iSEIFfieDOd+yo16sokLMig6FG7ADhhu+19hdA==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-eth-abi/-/web3-eth-abi-1.2.8.tgz",
+      "integrity": "sha512-OKp/maLdKHPpQxZhEd0HgnCJFQajsGe42WOG6SVftlgzyR8Jjv4KNm46TKvb3hv5OJTKZWU7nZIxkEG+fyI58w==",
       "requires": {
-        "ethers": "4.0.0-beta.1",
-        "underscore": "1.8.3",
-        "web3-utils": "1.0.0-beta.37"
+        "@ethersproject/abi": "5.0.0-beta.153",
+        "underscore": "1.9.1",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-eth-accounts": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-eth-accounts/-/web3-eth-accounts-1.0.0-beta.37.tgz",
-      "integrity": "sha512-uvbHL62/zwo4GDmwKdqH9c/EgYd8QVnAfpVw8D3epSISpgbONNY7Hr4MRMSd/CqAP12l2Ls9JVQGLhhC83bW6g==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-eth-accounts/-/web3-eth-accounts-1.2.8.tgz",
+      "integrity": "sha512-QODqSD4SZN/1oWfvlvsuum6Ud9+2FUTW4VTPJh245YTewCpa0M5+Fzug3UTeUZNv88STwC//dV72zReITNh4ZQ==",
       "requires": {
-        "any-promise": "1.3.0",
+        "@web3-js/scrypt-shim": "^0.1.0",
         "crypto-browserify": "3.12.0",
-        "eth-lib": "0.2.7",
-        "scrypt.js": "0.2.0",
-        "underscore": "1.8.3",
-        "uuid": "2.0.1",
-        "web3-core": "1.0.0-beta.37",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-core-method": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "eth-lib": "^0.2.8",
+        "ethereumjs-common": "^1.3.2",
+        "ethereumjs-tx": "^2.1.1",
+        "underscore": "1.9.1",
+        "uuid": "3.3.2",
+        "web3-core": "1.2.8",
+        "web3-core-helpers": "1.2.8",
+        "web3-core-method": "1.2.8",
+        "web3-utils": "1.2.8"
       },
       "dependencies": {
         "eth-lib": {
-          "version": "0.2.7",
-          "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.2.7.tgz",
-          "integrity": "sha1-L5Pxex4jrsN1nNSj/iDBKGo/wco=",
+          "version": "0.2.8",
+          "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.2.8.tgz",
+          "integrity": "sha512-ArJ7x1WcWOlSpzdoTBX8vkwlkSQ85CjjifSZtV4co64vWxSV8geWfPI9x4SVYu3DSxnX4yWFVTtGL+j9DUFLNw==",
           "requires": {
             "bn.js": "^4.11.6",
             "elliptic": "^6.4.0",
             "xhr-request-promise": "^0.1.2"
           }
-        },
-        "uuid": {
-          "version": "2.0.1",
-          "resolved": "http://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
-          "integrity": "sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w="
         }
       }
     },
     "web3-eth-contract": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-eth-contract/-/web3-eth-contract-1.0.0-beta.37.tgz",
-      "integrity": "sha512-h1B3A8Z/C7BlnTCHkrWbXZQTViDxfR12lKMeTkT8Sqj5phFmxrBlPE4ORy4lf1Dk5b23mZYE0r/IRACx4ThCrQ==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-eth-contract/-/web3-eth-contract-1.2.8.tgz",
+      "integrity": "sha512-EWRLVhZksbzGAyHd7RaOsakjCJBA2BREWiJmBDlrxDBqw8HltXFzKdkRug/mwVNa5ZYMabKSRF/MMh0Sx06CFw==",
       "requires": {
-        "underscore": "1.8.3",
-        "web3-core": "1.0.0-beta.37",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-core-method": "1.0.0-beta.37",
-        "web3-core-promievent": "1.0.0-beta.37",
-        "web3-core-subscriptions": "1.0.0-beta.37",
-        "web3-eth-abi": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "@types/bn.js": "^4.11.4",
+        "underscore": "1.9.1",
+        "web3-core": "1.2.8",
+        "web3-core-helpers": "1.2.8",
+        "web3-core-method": "1.2.8",
+        "web3-core-promievent": "1.2.8",
+        "web3-core-subscriptions": "1.2.8",
+        "web3-eth-abi": "1.2.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-eth-ens": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-eth-ens/-/web3-eth-ens-1.0.0-beta.37.tgz",
-      "integrity": "sha512-dR3UkrVzdRrJhfP57xBPx0CMiVnCcYFvh+u2XMkGydrhHgupSUkjqGr89xry/j1T0BkuN9mikpbyhdCVMXqMbg==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-eth-ens/-/web3-eth-ens-1.2.8.tgz",
+      "integrity": "sha512-zsFXY26BMGkihPkEO5qj9AEqyxPH4mclbzYs1dyrw7sHFmrUvhZc+jLGT9WyQGoujq37RN2l/tlOpCaFVVR8ng==",
       "requires": {
+        "content-hash": "^2.5.2",
         "eth-ens-namehash": "2.0.8",
-        "underscore": "1.8.3",
-        "web3-core": "1.0.0-beta.37",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-core-promievent": "1.0.0-beta.37",
-        "web3-eth-abi": "1.0.0-beta.37",
-        "web3-eth-contract": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "underscore": "1.9.1",
+        "web3-core": "1.2.8",
+        "web3-core-helpers": "1.2.8",
+        "web3-core-promievent": "1.2.8",
+        "web3-eth-abi": "1.2.8",
+        "web3-eth-contract": "1.2.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-eth-iban": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-eth-iban/-/web3-eth-iban-1.0.0-beta.37.tgz",
-      "integrity": "sha512-WQRniGJFxH/XCbd7miO6+jnUG+6bvuzfeufPIiOtCbeIC1ypp1kSqER8YVBDrTyinU1xnf1U5v0KBZ2yiWBJxQ==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-eth-iban/-/web3-eth-iban-1.2.8.tgz",
+      "integrity": "sha512-xgPUOuDOQJYloUS334/wot6jvp6K8JBz8UvQ1tAxU9LO2v2DW+IDTJ5gQ6TdutTmzdDi97KdwhwnQwhQh5Z1PA==",
       "requires": {
-        "bn.js": "4.11.6",
-        "web3-utils": "1.0.0-beta.37"
-      },
-      "dependencies": {
-        "bn.js": {
-          "version": "4.11.6",
-          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
-          "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU="
-        }
+        "bn.js": "4.11.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-eth-personal": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-eth-personal/-/web3-eth-personal-1.0.0-beta.37.tgz",
-      "integrity": "sha512-B4dZpGbD+nGnn48i6nJBqrQ+HB7oDmd+Q3wGRKOsHSK5HRWO/KwYeA7wgwamMAElkut50lIsT9EJl4Apfk3G5Q==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-eth-personal/-/web3-eth-personal-1.2.8.tgz",
+      "integrity": "sha512-sWhxF1cpF9pB1wMISrOSy/i8IB1NWtvoXT9dfkWtvByGf3JfC2DlnllLaA1f9ohyvxnR+QTgPKgOQDknmqDstw==",
       "requires": {
-        "web3-core": "1.0.0-beta.37",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "web3-core-method": "1.0.0-beta.37",
-        "web3-net": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "@types/node": "^12.6.1",
+        "web3-core": "1.2.8",
+        "web3-core-helpers": "1.2.8",
+        "web3-core-method": "1.2.8",
+        "web3-net": "1.2.8",
+        "web3-utils": "1.2.8"
+      },
+      "dependencies": {
+        "@types/node": {
+          "version": "12.12.44",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.12.44.tgz",
+          "integrity": "sha512-jM6QVv0Sm5d3nW+nUD5jSzPcO6oPqboitSNcwgBay9hifVq/Rauq1PYnROnsmuw45JMBiTnsPAno0bKu2e2xrg=="
+        }
       }
     },
     "web3-net": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-net/-/web3-net-1.0.0-beta.37.tgz",
-      "integrity": "sha512-xG/uBtMdDa1UMXw9KjDUgf3fXA/fDEJUYUS0TDn+U9PMgngA+UVECHNNvQTrVVDxEky38V3sahwIDiopNsQdsw==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-net/-/web3-net-1.2.8.tgz",
+      "integrity": "sha512-Nsq6qgncvvThOjC+sQ+NfDH8L7jclQCFzLFYa9wsd5J6HJ6f5gJl/mv6rsZQX9iDEYDPKkDfyqHktynOBgKWMQ==",
       "requires": {
-        "web3-core": "1.0.0-beta.37",
-        "web3-core-method": "1.0.0-beta.37",
-        "web3-utils": "1.0.0-beta.37"
+        "web3-core": "1.2.8",
+        "web3-core-method": "1.2.8",
+        "web3-utils": "1.2.8"
       }
     },
     "web3-providers-http": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-providers-http/-/web3-providers-http-1.0.0-beta.37.tgz",
-      "integrity": "sha512-FM/1YDB1jtZuTo78habFj7S9tNHoqt0UipdyoQV29b8LkGKZV9Vs3is8L24hzuj1j/tbwkcAH+ewIseHwu0DTg==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-providers-http/-/web3-providers-http-1.2.8.tgz",
+      "integrity": "sha512-Esj4SpgabmBDOR4QD3qYapzwFYWHigcdgdjvt/VWT5/7TD10o52hr+Nsvp3/XV5AFrcCMdY+lzKFLVH24u0sww==",
       "requires": {
-        "web3-core-helpers": "1.0.0-beta.37",
+        "web3-core-helpers": "1.2.8",
         "xhr2-cookies": "1.1.0"
       }
     },
     "web3-providers-ipc": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-providers-ipc/-/web3-providers-ipc-1.0.0-beta.37.tgz",
-      "integrity": "sha512-NdRPRxYMIU0C3u18NI8u4bwbhI9pCg5nRgDGYcmSAx5uOBxiYcQy+hb0WkJRRhBoyIXJmy+s26FoH8904+UnPg==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-providers-ipc/-/web3-providers-ipc-1.2.8.tgz",
+      "integrity": "sha512-ts3/UXCTRADPASdJ27vBVmcfM+lfG9QVBxGedY6+oNIo5EPxBUtsz94R32sfvFd6ofPsz6gOhK/M/ZKiJoi1sg==",
       "requires": {
-        "oboe": "2.1.3",
-        "underscore": "1.8.3",
-        "web3-core-helpers": "1.0.0-beta.37"
+        "oboe": "2.1.4",
+        "underscore": "1.9.1",
+        "web3-core-helpers": "1.2.8"
       }
     },
     "web3-providers-ws": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-providers-ws/-/web3-providers-ws-1.0.0-beta.37.tgz",
-      "integrity": "sha512-8p6ZLv+1JYa5Vs8oBn33Nn3VGFBbF+wVfO+b78RJS1Qf1uIOzjFVDk3XwYDD7rlz9G5BKpxhaQw+6EGQ7L02aw==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-providers-ws/-/web3-providers-ws-1.2.8.tgz",
+      "integrity": "sha512-Gcm0n82wd/XVeGFGTx+v56UqyrV9EyB2r1QFaBx4mS+VHbW2MCOdiRbNDfoZQslflnCWl8oHsivJ8Tya9kqlTQ==",
       "requires": {
-        "underscore": "1.8.3",
-        "web3-core-helpers": "1.0.0-beta.37",
-        "websocket": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2"
+        "@web3-js/websocket": "^1.0.29",
+        "eventemitter3": "^4.0.0",
+        "underscore": "1.9.1",
+        "web3-core-helpers": "1.2.8"
+      },
+      "dependencies": {
+        "eventemitter3": {
+          "version": "4.0.4",
+          "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.4.tgz",
+          "integrity": "sha512-rlaVLnVxtxvoyLsQQFBx53YmXHDxRIzzTLbdfxqi4yocpSjAxXwkU0cScM5JgSKMqEhrZpnvQ2D9gjylR0AimQ=="
+        }
       }
     },
     "web3-shh": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-shh/-/web3-shh-1.0.0-beta.37.tgz",
-      "integrity": "sha512-h5STG/xqZNQWtCLYOu7NiMqwqPea8SfkKQUPUFxXKIPVCFVKpHuQEwW1qcPQRJMLhlQIv17xuoUe1A+RzDNbrw==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-shh/-/web3-shh-1.2.8.tgz",
+      "integrity": "sha512-e29qKSfuZWDmxCG/uB48Nth6DCFFr2h2U+uI/fHEuhEjAEkBHopPNLc3ixrCTc6pqMocfJRPHJq/yET9PYN3oQ==",
       "requires": {
-        "web3-core": "1.0.0-beta.37",
-        "web3-core-method": "1.0.0-beta.37",
-        "web3-core-subscriptions": "1.0.0-beta.37",
-        "web3-net": "1.0.0-beta.37"
+        "web3-core": "1.2.8",
+        "web3-core-method": "1.2.8",
+        "web3-core-subscriptions": "1.2.8",
+        "web3-net": "1.2.8"
       }
     },
     "web3-utils": {
-      "version": "1.0.0-beta.37",
-      "resolved": "https://registry.npmjs.org/web3-utils/-/web3-utils-1.0.0-beta.37.tgz",
-      "integrity": "sha512-kA1fyhO8nKgU21wi30oJQ/ssvu+9srMdjOTKbHYbQe4ATPcr5YNwwrxG3Bcpbu1bEwRUVKHCkqi+wTvcAWBdlQ==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/web3-utils/-/web3-utils-1.2.8.tgz",
+      "integrity": "sha512-9SIVGFLajwlmo5joC4DGxuy2OeDkRCXVWT8JWcDQ+BayNVHyAWGvn0oGkQ0ys14Un0KK6bjjKoD0xYs4k+FaVw==",
       "requires": {
-        "bn.js": "4.11.6",
-        "eth-lib": "0.1.27",
+        "bn.js": "4.11.8",
+        "eth-lib": "0.2.7",
+        "ethereum-bloom-filters": "^1.0.6",
         "ethjs-unit": "0.1.6",
         "number-to-bn": "1.7.0",
-        "randomhex": "0.1.5",
-        "underscore": "1.8.3",
-        "utf8": "2.1.1"
+        "randombytes": "^2.1.0",
+        "underscore": "1.9.1",
+        "utf8": "3.0.0"
       },
       "dependencies": {
-        "bn.js": {
-          "version": "4.11.6",
-          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
-          "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU="
+        "eth-lib": {
+          "version": "0.2.7",
+          "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.2.7.tgz",
+          "integrity": "sha1-L5Pxex4jrsN1nNSj/iDBKGo/wco=",
+          "requires": {
+            "bn.js": "^4.11.6",
+            "elliptic": "^6.4.0",
+            "xhr-request-promise": "^0.1.2"
+          }
+        },
+        "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"
+          }
         }
       }
     },
@@ -12155,7 +12413,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -12201,31 +12459,6 @@
         }
       }
     },
-    "websocket": {
-      "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-      "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
-      "requires": {
-        "debug": "^2.2.0",
-        "nan": "^2.3.3",
-        "typedarray-to-buffer": "^3.1.2",
-        "yaeti": "^0.0.6"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
-        "ms": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
-        }
-      }
-    },
     "websocket-driver": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
@@ -12237,9 +12470,9 @@
       }
     },
     "websocket-extensions": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.3.tgz",
-      "integrity": "sha512-nqHUnMXmBzT0w570r2JpJxfiSD1IzoI+HGVdd3aZ0yNi3ngvQ4jv1dtHt5VGxfI2yj5yqImPhOK4vmIh2xMbGg==",
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.4.tgz",
+      "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg==",
       "dev": true
     },
     "which": {
@@ -12310,7 +12543,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -12368,11 +12601,11 @@
       }
     },
     "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": {
@@ -12383,11 +12616,6 @@
         "cookiejar": "^2.1.1"
       }
     },
-    "xmlhttprequest": {
-      "version": "1.8.0",
-      "resolved": "https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz",
-      "integrity": "sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw="
-    },
     "xregexp": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.0.0.tgz",
@@ -12490,15 +12718,6 @@
         "camelcase": "^4.1.0"
       }
     },
-    "yauzl": {
-      "version": "2.10.0",
-      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
-      "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
-      "requires": {
-        "buffer-crc32": "~0.2.3",
-        "fd-slicer": "~1.1.0"
-      }
-    },
     "yorkie": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/yorkie/-/yorkie-2.0.0.tgz",
@@ -12539,7 +12758,7 @@
         },
         "get-stream": {
           "version": "3.0.0",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
           "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
           "dev": true
         },