From 87a416be9b7eaebb6c85017da1057dcccb916858 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Sun, 6 Sep 2020 20:48:30 +0000
Subject: [PATCH] Bump http-proxy from 1.17.0 to 1.18.1

Bumps [http-proxy](https://github.com/http-party/node-http-proxy) from 1.17.0 to 1.18.1.
- [Release notes](https://github.com/http-party/node-http-proxy/releases)
- [Changelog](https://github.com/http-party/node-http-proxy/blob/master/CHANGELOG.md)
- [Commits](https://github.com/http-party/node-http-proxy/compare/1.17.0...1.18.1)

Signed-off-by: dependabot[bot] <support@github.com>
---
 package-lock.json | 1853 ++++++++++++++++++++++++++++++++++++++++++---
 yarn.lock         |   29 +-
 2 files changed, 1777 insertions(+), 105 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 52d0e18..894bc70 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,57 @@
         "@babel/types": "^7.0.0"
       }
     },
+    "@babel/helper-plugin-utils": {
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-plugin-utils/-/helper-plugin-utils-7.10.4.tgz",
+      "integrity": "sha512-O4KCvQA6lLiMU9l2eawBPMf1xPP8xPfB3iEQw150hOVTqj/rfXz0ThTb4HEzqQfs2Bmo5Ay8BzxfzVtBrr9dVg=="
+    },
+    "@babel/helper-validator-identifier": {
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz",
+      "integrity": "sha512-3U9y+43hz7ZM+rzG24Qe2mufW5KhvFg/NhnNph+i9mgCtdTCtMJuI1TMkrIUiK7Ix4PYlRF9I5dhqaLYA/ADXw=="
+    },
+    "@babel/plugin-transform-runtime": {
+      "version": "7.11.5",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.11.5.tgz",
+      "integrity": "sha512-9aIoee+EhjySZ6vY5hnLjigHzunBlscx9ANKutkeWTJTx6m5Rbq6Ic01tLvO54lSusR+BxV7u4UDdCmXv5aagg==",
+      "requires": {
+        "@babel/helper-module-imports": "^7.10.4",
+        "@babel/helper-plugin-utils": "^7.10.4",
+        "resolve": "^1.8.1",
+        "semver": "^5.5.1"
+      },
+      "dependencies": {
+        "@babel/helper-module-imports": {
+          "version": "7.10.4",
+          "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.10.4.tgz",
+          "integrity": "sha512-nEQJHqYavI217oD9+s5MUBzk6x1IlvoS9WTPfgG43CbMEeStE0v+r+TucWdx8KFGowPGvyOkDT9+7DHedIDnVw==",
+          "requires": {
+            "@babel/types": "^7.10.4"
+          }
+        },
+        "@babel/types": {
+          "version": "7.11.5",
+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.11.5.tgz",
+          "integrity": "sha512-bvM7Qz6eKnJVFIn+1LPtjlBFPVN5jNDc1XmN15vWe7Q3DPBufWWsLiIvUu7xW87uTG6QoggpIDnUgLQvPheU+Q==",
+          "requires": {
+            "@babel/helper-validator-identifier": "^7.10.4",
+            "lodash": "^4.17.19",
+            "to-fast-properties": "^2.0.0"
+          }
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        },
+        "to-fast-properties": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
+          "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4="
+        }
+      }
+    },
     "@babel/runtime": {
       "version": "7.0.0-beta.42",
       "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.0.0-beta.42.tgz",
@@ -94,6 +145,95 @@
       "resolved": "https://registry.npmjs.org/@emotion/utils/-/utils-0.8.2.tgz",
       "integrity": "sha1-V2/3+xIwGFthmnXSWMvJjwhnqNw="
     },
+    "@portis/web3": {
+      "version": "2.0.0-beta.59",
+      "resolved": "https://registry.npmjs.org/@portis/web3/-/web3-2.0.0-beta.59.tgz",
+      "integrity": "sha512-QdIdrI3uK+TyT+dxRK5bEYOi2PBlUDJ7vszR2uu0bT49wy7O52B9td6fL/5gsfk0VpCsmrYov3x3gEQYwGUyvQ==",
+      "requires": {
+        "@portis/web3-provider-engine": "1.1.2",
+        "ethereumjs-util": "5.2.0",
+        "penpal": "3.0.7",
+        "pocket-js-core": "0.0.3"
+      }
+    },
+    "@portis/web3-provider-engine": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@portis/web3-provider-engine/-/web3-provider-engine-1.1.2.tgz",
+      "integrity": "sha512-NiiF0UPfngf4ulo32ybEDAMaad4i7h44HJaN8ea8HHt/vaFiUcPtINjC2o21jhWaLANerW4ZbOrNs1iCLH4p6A==",
+      "requires": {
+        "async": "^2.5.0",
+        "backoff": "^2.5.0",
+        "clone": "^2.0.0",
+        "cross-fetch": "^2.1.0",
+        "eth-block-tracker": "^4.2.0",
+        "eth-json-rpc-filters": "^4.0.2",
+        "eth-json-rpc-infura": "^3.1.0",
+        "eth-json-rpc-middleware": "^5.0.2",
+        "eth-sig-util": "2.5.3",
+        "ethereumjs-block": "^1.2.2",
+        "ethereumjs-tx": "^1.2.0",
+        "ethereumjs-util": "^5.1.5",
+        "ethereumjs-vm": "^2.3.4",
+        "json-rpc-error": "^2.0.0",
+        "json-stable-stringify": "^1.0.1",
+        "promise-to-callback": "^1.0.0",
+        "readable-stream": "^2.2.9",
+        "request": "^2.85.0",
+        "semaphore": "^1.0.3",
+        "ws": "^5.1.1",
+        "xhr": "^2.2.0",
+        "xtend": "^4.0.1"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18="
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        },
+        "ws": {
+          "version": "5.2.2",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-5.2.2.tgz",
+          "integrity": "sha512-jaHFD6PFv6UgoIVda6qZllptQsMlDEJkTQcybzzXDYM1XO9Y8em691FGMPmM46WGyLU4z9KMgQN+qrux/nhlHA==",
+          "requires": {
+            "async-limiter": "~1.0.0"
+          }
+        }
+      }
+    },
+    "@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": "14.6.4",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.6.4.tgz",
+      "integrity": "sha512-Wk7nG1JSaMfMpoMJDKUsWYugliB2Vy55pdjLpmLixeyMi7HizW2I/9QoxsPCkXl3dO+ZOVqPumKaDUv5zJu2uQ=="
+    },
+    "@types/pbkdf2": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@types/pbkdf2/-/pbkdf2-3.1.0.tgz",
+      "integrity": "sha512-Cf63Rv7jCQ0LaL8tNXmEyqTHuIJxRdlS5vMh1mj5voN4+QFhVZnlZruezqpWYDiJ8UTzhP0VmeLXCmBk66YrMQ==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/prop-types": {
       "version": "15.5.5",
       "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.5.5.tgz",
@@ -111,6 +251,14 @@
         "csstype": "^2.2.0"
       }
     },
+    "@types/secp256k1": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/@types/secp256k1/-/secp256k1-4.0.1.tgz",
+      "integrity": "sha512-+ZjSA8ELlOp8SlKi0YLB2tz9d5iPNEmOBd+8Rz21wTMdaXQIa9b6TEnD6l5qKOCypE7FSyPyck12qZJxSDNoog==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "abab": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
@@ -122,6 +270,14 @@
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
       "integrity": "sha1-+PLIh60Qv2f2NPAFtph/7TF5qsg="
     },
+    "abstract-leveldown": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/abstract-leveldown/-/abstract-leveldown-2.6.3.tgz",
+      "integrity": "sha512-2++wDf/DYqkPR3o5tbfdhF96EfMApo1GpPfzOsR/ZYXdkSmELlvOOEAl9iKkRsktMPHdGjO4rtkBpf2I7TiTeA==",
+      "requires": {
+        "xtend": "~4.0.0"
+      }
+    },
     "accepts": {
       "version": "1.3.5",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
@@ -171,6 +327,11 @@
         }
       }
     },
+    "add": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/add/-/add-2.0.6.tgz",
+      "integrity": "sha1-JI8Kn25aUo7yKV2+7DBTITCuIjU="
+    },
     "aes-js": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.1.1.tgz",
@@ -372,14 +533,36 @@
     "async": {
       "version": "1.5.2",
       "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
-      "dev": true
+      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
     },
     "async-each": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0="
     },
+    "async-eventemitter": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/async-eventemitter/-/async-eventemitter-0.2.4.tgz",
+      "integrity": "sha512-pd20BwL7Yt1zwDFy+8MX8F1+WCT8aQeKj0kQnTrH9WaeRETlRamVhD0JtRPmrV4GfOJ2F9CvdQkZeZhnh2TuHw==",
+      "requires": {
+        "async": "^2.4.0"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        }
+      }
+    },
     "async-limiter": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
@@ -415,6 +598,11 @@
         }
       }
     },
+    "await-semaphore": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/await-semaphore/-/await-semaphore-0.1.3.tgz",
+      "integrity": "sha512-d1W2aNSYcz/sxYO4pMGX9vq65qOTu0P800epMud+6cYYX0QcT7zyqcxec3VWzpgvdXo57UWmVbZpLMjX2m1I7Q=="
+    },
     "aws-sign2": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
@@ -425,6 +613,38 @@
       "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
       "integrity": "sha1-8OAD2cqef1nHpQiUXXsu+aBKVC8="
     },
+    "axios": {
+      "version": "0.18.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.18.1.tgz",
+      "integrity": "sha512-0BfJq4NSfQXd+SkFdrvFbG7addhYSBA2mQwISr46pD6E5iqkWg02RAs8vyTT/j0RTnoYmeXauBuSv1qKwR179g==",
+      "requires": {
+        "follow-redirects": "1.5.10",
+        "is-buffer": "^2.0.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "follow-redirects": {
+          "version": "1.5.10",
+          "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
+          "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
+          "requires": {
+            "debug": "=3.1.0"
+          }
+        },
+        "is-buffer": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.4.tgz",
+          "integrity": "sha512-Kq1rokWXOPXWuaMAqZiJW4XxsmD9zGx9q4aePabbn3qCRGedtH7Cm+zV8WETitMfu1wdh+Rvd6w5egwSngUX2A=="
+        }
+      }
+    },
     "babel-cli": {
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-cli/-/babel-cli-6.26.0.tgz",
@@ -494,7 +714,6 @@
       "version": "6.17.0",
       "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.17.0.tgz",
       "integrity": "sha1-bEV2RH30eeJB5YyAfkvH2k239CU=",
-      "dev": true,
       "requires": {
         "babel-code-frame": "^6.16.0",
         "babel-generator": "^6.17.0",
@@ -522,8 +741,7 @@
         "path-exists": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-1.0.0.tgz",
-          "integrity": "sha1-1aiZjrce83p0w06w2eum6HjuoIE=",
-          "dev": true
+          "integrity": "sha1-1aiZjrce83p0w06w2eum6HjuoIE="
         }
       }
     },
@@ -566,7 +784,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-helper-builder-binary-assignment-operator-visitor/-/babel-helper-builder-binary-assignment-operator-visitor-6.24.1.tgz",
       "integrity": "sha1-zORReto1b0IgvK6KAsKzRvmlZmQ=",
-      "dev": true,
       "requires": {
         "babel-helper-explode-assignable-expression": "^6.24.1",
         "babel-runtime": "^6.22.0",
@@ -610,7 +827,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-helper-explode-assignable-expression/-/babel-helper-explode-assignable-expression-6.24.1.tgz",
       "integrity": "sha1-8luCz33BBDPFX3BZLVdGQArCLKo=",
-      "dev": true,
       "requires": {
         "babel-runtime": "^6.22.0",
         "babel-traverse": "^6.24.1",
@@ -670,7 +886,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-helper-remap-async-to-generator/-/babel-helper-remap-async-to-generator-6.24.1.tgz",
       "integrity": "sha1-XsWBgnrXI/7N04HxySg5BnbkVRs=",
-      "dev": true,
       "requires": {
         "babel-helper-function-name": "^6.24.1",
         "babel-runtime": "^6.22.0",
@@ -732,6 +947,11 @@
         "babel-runtime": "^6.22.0"
       }
     },
+    "babel-plugin-add-module-exports": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/babel-plugin-add-module-exports/-/babel-plugin-add-module-exports-0.2.1.tgz",
+      "integrity": "sha1-mumh9KjcZ/DN7E9K7aHkOl/2XiU="
+    },
     "babel-plugin-check-es2015-constants": {
       "version": "6.22.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-check-es2015-constants/-/babel-plugin-check-es2015-constants-6.22.0.tgz",
@@ -857,8 +1077,7 @@
     "babel-plugin-syntax-async-functions": {
       "version": "6.13.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz",
-      "integrity": "sha1-ytnK0RkbWtY0vzCuCHI5HgZHvpU=",
-      "dev": true
+      "integrity": "sha1-ytnK0RkbWtY0vzCuCHI5HgZHvpU="
     },
     "babel-plugin-syntax-class-properties": {
       "version": "6.13.0",
@@ -869,8 +1088,7 @@
     "babel-plugin-syntax-exponentiation-operator": {
       "version": "6.13.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-syntax-exponentiation-operator/-/babel-plugin-syntax-exponentiation-operator-6.13.0.tgz",
-      "integrity": "sha1-nufoM3KQ2pUoggGmpX9BcDF4MN4=",
-      "dev": true
+      "integrity": "sha1-nufoM3KQ2pUoggGmpX9BcDF4MN4="
     },
     "babel-plugin-syntax-flow": {
       "version": "6.18.0",
@@ -886,20 +1104,17 @@
     "babel-plugin-syntax-object-rest-spread": {
       "version": "6.13.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz",
-      "integrity": "sha1-/WU28rzhODb/o6VFjEkDpZe7O/U=",
-      "dev": true
+      "integrity": "sha1-/WU28rzhODb/o6VFjEkDpZe7O/U="
     },
     "babel-plugin-syntax-trailing-function-commas": {
       "version": "6.22.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-syntax-trailing-function-commas/-/babel-plugin-syntax-trailing-function-commas-6.22.0.tgz",
-      "integrity": "sha1-ugNgk3+NBuQBgKQ/4NVhb/9TLPM=",
-      "dev": true
+      "integrity": "sha1-ugNgk3+NBuQBgKQ/4NVhb/9TLPM="
     },
     "babel-plugin-transform-async-to-generator": {
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-async-to-generator/-/babel-plugin-transform-async-to-generator-6.24.1.tgz",
       "integrity": "sha1-ZTbjeK/2yx1VF6wOQOs+n8jQh2E=",
-      "dev": true,
       "requires": {
         "babel-helper-remap-async-to-generator": "^6.24.1",
         "babel-plugin-syntax-async-functions": "^6.8.0",
@@ -1134,7 +1349,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-exponentiation-operator/-/babel-plugin-transform-exponentiation-operator-6.24.1.tgz",
       "integrity": "sha1-KrDJx/MJj6SJB3cruBP+QejeOg4=",
-      "dev": true,
       "requires": {
         "babel-helper-builder-binary-assignment-operator-visitor": "^6.24.1",
         "babel-plugin-syntax-exponentiation-operator": "^6.8.0",
@@ -1151,6 +1365,15 @@
         "babel-runtime": "^6.22.0"
       }
     },
+    "babel-plugin-transform-object-rest-spread": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-plugin-transform-object-rest-spread/-/babel-plugin-transform-object-rest-spread-6.26.0.tgz",
+      "integrity": "sha1-DzZpLVD+9rfi1LOsFHgTepY7ewY=",
+      "requires": {
+        "babel-plugin-syntax-object-rest-spread": "^6.8.0",
+        "babel-runtime": "^6.26.0"
+      }
+    },
     "babel-plugin-transform-react-constant-elements": {
       "version": "6.22.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-react-constant-elements/-/babel-plugin-transform-react-constant-elements-6.22.0.tgz",
@@ -1247,7 +1470,6 @@
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/babel-preset-env/-/babel-preset-env-1.7.0.tgz",
       "integrity": "sha1-3qefpOvriDzTXasH4mDBycBN93o=",
-      "dev": true,
       "requires": {
         "babel-plugin-check-es2015-constants": "^6.22.0",
         "babel-plugin-syntax-trailing-function-commas": "^6.22.0",
@@ -1546,11 +1768,28 @@
         "to-fast-properties": "^1.0.3"
       }
     },
+    "babelify": {
+      "version": "7.3.0",
+      "resolved": "https://registry.npmjs.org/babelify/-/babelify-7.3.0.tgz",
+      "integrity": "sha1-qlau3nBn/XvVSWZu4W3ChQh+iOU=",
+      "requires": {
+        "babel-core": "^6.0.14",
+        "object-assign": "^4.0.0"
+      }
+    },
     "babylon": {
       "version": "6.18.0",
       "resolved": "https://registry.npmjs.org/babylon/-/babylon-6.18.0.tgz",
       "integrity": "sha1-ry87iPpvXB5MY00aD46sT1WzleM="
     },
+    "backoff": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/backoff/-/backoff-2.5.0.tgz",
+      "integrity": "sha1-9hbtqdPktmuMp/ynn2lXIsX44m8=",
+      "requires": {
+        "precond": "0.2"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -1567,8 +1806,7 @@
     "base64-js": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
-      "integrity": "sha1-yrHmEY8FEJXli1KBrqjBzSK/wOM=",
-      "dev": true
+      "integrity": "sha1-yrHmEY8FEJXli1KBrqjBzSK/wOM="
     },
     "batch": {
       "version": "0.6.1",
@@ -1609,11 +1847,15 @@
         "safe-buffer": "^5.0.1"
       }
     },
+    "blakejs": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/blakejs/-/blakejs-1.1.0.tgz",
+      "integrity": "sha1-ad+S75U6qIylGjLfarHFShVfx6U="
+    },
     "bluebird": {
       "version": "3.5.1",
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
-      "integrity": "sha1-2VUfnemPH82h5oPRfukaBgLuLrk=",
-      "dev": true
+      "integrity": "sha1-2VUfnemPH82h5oPRfukaBgLuLrk="
     },
     "bn.js": {
       "version": "4.11.8",
@@ -1718,7 +1960,6 @@
       "version": "3.2.8",
       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-3.2.8.tgz",
       "integrity": "sha1-sABTYdZHHw9ZUnl6dvyYXx+Xj8Y=",
-      "dev": true,
       "requires": {
         "caniuse-lite": "^1.0.30000844",
         "electron-to-chromium": "^1.3.47"
@@ -1751,6 +1992,11 @@
         "node-int64": "^0.4.0"
       }
     },
+    "btoa": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/btoa/-/btoa-1.2.1.tgz",
+      "integrity": "sha512-SB4/MIGlsiVkMcHmT+pSmIPoNDoHg+7cMzmt3Uxt628MTz2487DKSqK/fuhFBrkuqrYv5UCEnACpF4dTFNKc/g=="
+    },
     "buffer": {
       "version": "4.9.1",
       "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
@@ -1765,8 +2011,7 @@
     "buffer-from": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
-      "integrity": "sha1-MnE7wCj3XAL9txDXx7zsHyxgcO8=",
-      "dev": true
+      "integrity": "sha1-MnE7wCj3XAL9txDXx7zsHyxgcO8="
     },
     "buffer-to-arraybuffer": {
       "version": "0.0.5",
@@ -1888,8 +2133,7 @@
     "caniuse-lite": {
       "version": "1.0.30000878",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000878.tgz",
-      "integrity": "sha1-xkTDlYjdQtNJjpUiNMNy5aQKQSM=",
-      "dev": true
+      "integrity": "sha1-xkTDlYjdQtNJjpUiNMNy5aQKQSM="
     },
     "cardinal": {
       "version": "1.0.0",
@@ -1939,6 +2183,14 @@
       "resolved": "https://registry.npmjs.org/charenc/-/charenc-0.0.2.tgz",
       "integrity": "sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc="
     },
+    "checkpoint-store": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/checkpoint-store/-/checkpoint-store-1.1.0.tgz",
+      "integrity": "sha1-BOTLUWuRQziTWB5tRgGnjpVS6gY=",
+      "requires": {
+        "functional-red-black-tree": "^1.0.1"
+      }
+    },
     "chokidar": {
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-1.7.0.tgz",
@@ -2260,7 +2512,6 @@
       "version": "1.6.2",
       "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz",
       "integrity": "sha1-kEvfGUzTEi/Gdcd/xKw9T/D9GjQ=",
-      "dev": true,
       "requires": {
         "buffer-from": "^1.0.0",
         "inherits": "^2.0.3",
@@ -2458,6 +2709,27 @@
         }
       }
     },
+    "cross-fetch": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-2.2.3.tgz",
+      "integrity": "sha512-PrWWNH3yL2NYIb/7WF/5vFG3DCQiXDOVf8k3ijatbrtnwNuhMWLC7YF7uqf53tbTFDzHIUD8oITw4Bxt8ST3Nw==",
+      "requires": {
+        "node-fetch": "2.1.2",
+        "whatwg-fetch": "2.0.4"
+      },
+      "dependencies": {
+        "node-fetch": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.1.2.tgz",
+          "integrity": "sha1-q4hOjn5X44qUR1POxwb3iNF2i7U="
+        },
+        "whatwg-fetch": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz",
+          "integrity": "sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng=="
+        }
+      }
+    },
     "cross-spawn": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-4.0.2.tgz",
@@ -2684,6 +2956,26 @@
         "mimic-response": "^1.0.0"
       }
     },
+    "deep-equal": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.1.1.tgz",
+      "integrity": "sha512-yd9c5AdiqVcR+JjcwUQb9DkhJc8ngNr0MahEBGvDiJw8puWab2yZlh+nkasOnZP+EGTAP6rRp2JzJhJZzvNF8g==",
+      "requires": {
+        "is-arguments": "^1.0.4",
+        "is-date-object": "^1.0.1",
+        "is-regex": "^1.0.4",
+        "object-is": "^1.0.1",
+        "object-keys": "^1.1.1",
+        "regexp.prototype.flags": "^1.2.0"
+      },
+      "dependencies": {
+        "object-keys": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA=="
+        }
+      }
+    },
     "deep-freeze": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/deep-freeze/-/deep-freeze-0.0.1.tgz",
@@ -2717,6 +3009,14 @@
         }
       }
     },
+    "deferred-leveldown": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/deferred-leveldown/-/deferred-leveldown-1.2.2.tgz",
+      "integrity": "sha512-uukrWD2bguRtXilKt6cAWKyoXrTSMo5m7crUdLfWQmu8kIm88w3QZoUL+6nhpfKVmhHANER6Re3sKoNoZ3IKMA==",
+      "requires": {
+        "abstract-leveldown": "~2.6.0"
+      }
+    },
     "define-properties": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
@@ -2728,8 +3028,7 @@
     "defined": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/defined/-/defined-1.0.0.tgz",
-      "integrity": "sha1-yY2bzvdWdBiOEQlpFRGZ45sfppM=",
-      "dev": true
+      "integrity": "sha1-yY2bzvdWdBiOEQlpFRGZ45sfppM="
     },
     "del": {
       "version": "2.2.2",
@@ -2886,6 +3185,14 @@
       "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-2.0.0.tgz",
       "integrity": "sha1-vXWcNXqqcDZeAclrewvsCKbg2Uk="
     },
+    "dotignore": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/dotignore/-/dotignore-0.1.2.tgz",
+      "integrity": "sha512-UGGGWfSauusaVJC+8fgV+NVvBXkCTmVv7sk6nojDZZvuOUNGUy0Zk4UpHQD6EDjS0jpBwcACvH4eofvyzBcRDw==",
+      "requires": {
+        "minimatch": "^3.0.4"
+      }
+    },
     "drbg.js": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/drbg.js/-/drbg.js-1.0.1.tgz",
@@ -2937,8 +3244,7 @@
     "electron-to-chromium": {
       "version": "1.3.61",
       "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.61.tgz",
-      "integrity": "sha1-qKwpWyjQ8D2F43Mm/Ra2trF6F5U=",
-      "dev": true
+      "integrity": "sha1-qKwpWyjQ8D2F43Mm/Ra2trF6F5U="
     },
     "elliptic": {
       "version": "6.4.1",
@@ -2986,7 +3292,6 @@
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
       "integrity": "sha1-7SljTRm6ukY7bOa4CjchPqtx7EM=",
-      "dev": true,
       "requires": {
         "once": "^1.4.0"
       }
@@ -3058,7 +3363,6 @@
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.7.tgz",
       "integrity": "sha1-RoTXF3mtOa8Xfj8AeZb3xnyFJhg=",
-      "dev": true,
       "requires": {
         "prr": "~1.0.1"
       }
@@ -3433,6 +3737,211 @@
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
       "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
     },
+    "eth-block-tracker": {
+      "version": "4.4.3",
+      "resolved": "https://registry.npmjs.org/eth-block-tracker/-/eth-block-tracker-4.4.3.tgz",
+      "integrity": "sha512-A8tG4Z4iNg4mw5tP1Vung9N9IjgMNqpiMoJ/FouSFwNCGHv2X0mmOYwtQOJzki6XN7r7Tyo01S29p7b224I4jw==",
+      "requires": {
+        "@babel/plugin-transform-runtime": "^7.5.5",
+        "@babel/runtime": "^7.5.5",
+        "eth-query": "^2.1.0",
+        "json-rpc-random-id": "^1.0.1",
+        "pify": "^3.0.0",
+        "safe-event-emitter": "^1.0.1"
+      },
+      "dependencies": {
+        "@babel/runtime": {
+          "version": "7.11.2",
+          "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.11.2.tgz",
+          "integrity": "sha512-TeWkU52so0mPtDcaCTxNBI/IHiz0pZgr8VEFqXFtZWpYD08ZB6FaSwVAS8MKRQAP3bYKiVjwysOJgMFY28o6Tw==",
+          "requires": {
+            "regenerator-runtime": "^0.13.4"
+          }
+        },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+        },
+        "regenerator-runtime": {
+          "version": "0.13.7",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz",
+          "integrity": "sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew=="
+        }
+      }
+    },
+    "eth-json-rpc-errors": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/eth-json-rpc-errors/-/eth-json-rpc-errors-1.1.1.tgz",
+      "integrity": "sha512-WT5shJ5KfNqHi9jOZD+ID8I1kuYWNrigtZat7GOQkvwo99f8SzAVaEcWhJUv656WiZOAg3P1RiJQANtUmDmbIg==",
+      "requires": {
+        "fast-safe-stringify": "^2.0.6"
+      }
+    },
+    "eth-json-rpc-filters": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/eth-json-rpc-filters/-/eth-json-rpc-filters-4.1.1.tgz",
+      "integrity": "sha512-GkXb2h6STznD+AmMzblwXgm1JMvjdK9PTIXG7BvIkTlXQ9g0QOxuU1iQRYHoslF9S30BYBSoLSisAYPdLggW+A==",
+      "requires": {
+        "await-semaphore": "^0.1.3",
+        "eth-json-rpc-middleware": "^4.1.4",
+        "eth-query": "^2.1.2",
+        "json-rpc-engine": "^5.1.3",
+        "lodash.flatmap": "^4.5.0",
+        "safe-event-emitter": "^1.0.1"
+      },
+      "dependencies": {
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18="
+        },
+        "eth-json-rpc-middleware": {
+          "version": "4.4.1",
+          "resolved": "https://registry.npmjs.org/eth-json-rpc-middleware/-/eth-json-rpc-middleware-4.4.1.tgz",
+          "integrity": "sha512-yoSuRgEYYGFdVeZg3poWOwAlRI+MoBIltmOB86MtpoZjvLbou9EB/qWMOWSmH2ryCWLW97VYY6NWsmWm3OAA7A==",
+          "requires": {
+            "btoa": "^1.2.1",
+            "clone": "^2.1.1",
+            "eth-json-rpc-errors": "^1.0.1",
+            "eth-query": "^2.1.2",
+            "eth-sig-util": "^1.4.2",
+            "ethereumjs-block": "^1.6.0",
+            "ethereumjs-tx": "^1.3.7",
+            "ethereumjs-util": "^5.1.2",
+            "ethereumjs-vm": "^2.6.0",
+            "fetch-ponyfill": "^4.0.0",
+            "json-rpc-engine": "^5.1.3",
+            "json-stable-stringify": "^1.0.1",
+            "pify": "^3.0.0",
+            "safe-event-emitter": "^1.0.1"
+          }
+        },
+        "eth-sig-util": {
+          "version": "1.4.2",
+          "resolved": "https://registry.npmjs.org/eth-sig-util/-/eth-sig-util-1.4.2.tgz",
+          "integrity": "sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=",
+          "requires": {
+            "ethereumjs-abi": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+            "ethereumjs-util": "^5.1.1"
+          }
+        },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+        }
+      }
+    },
+    "eth-json-rpc-infura": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/eth-json-rpc-infura/-/eth-json-rpc-infura-3.2.1.tgz",
+      "integrity": "sha512-W7zR4DZvyTn23Bxc0EWsq4XGDdD63+XPUCEhV2zQvQGavDVC4ZpFDK4k99qN7bd7/fjj37+rxmuBOBeIqCA5Mw==",
+      "requires": {
+        "cross-fetch": "^2.1.1",
+        "eth-json-rpc-middleware": "^1.5.0",
+        "json-rpc-engine": "^3.4.0",
+        "json-rpc-error": "^2.0.0"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "eth-json-rpc-middleware": {
+          "version": "1.6.0",
+          "resolved": "https://registry.npmjs.org/eth-json-rpc-middleware/-/eth-json-rpc-middleware-1.6.0.tgz",
+          "integrity": "sha512-tDVCTlrUvdqHKqivYMjtFZsdD7TtpNLBCfKAcOpaVs7orBMS/A8HWro6dIzNtTZIR05FAbJ3bioFOnZpuCew9Q==",
+          "requires": {
+            "async": "^2.5.0",
+            "eth-query": "^2.1.2",
+            "eth-tx-summary": "^3.1.2",
+            "ethereumjs-block": "^1.6.0",
+            "ethereumjs-tx": "^1.3.3",
+            "ethereumjs-util": "^5.1.2",
+            "ethereumjs-vm": "^2.1.0",
+            "fetch-ponyfill": "^4.0.0",
+            "json-rpc-engine": "^3.6.0",
+            "json-rpc-error": "^2.0.0",
+            "json-stable-stringify": "^1.0.1",
+            "promise-to-callback": "^1.0.0",
+            "tape": "^4.6.3"
+          }
+        },
+        "json-rpc-engine": {
+          "version": "3.8.0",
+          "resolved": "https://registry.npmjs.org/json-rpc-engine/-/json-rpc-engine-3.8.0.tgz",
+          "integrity": "sha512-6QNcvm2gFuuK4TKU1uwfH0Qd/cOSb9c1lls0gbnIhciktIUQJwz6NQNAW4B1KiGPenv7IKu97V222Yo1bNhGuA==",
+          "requires": {
+            "async": "^2.0.1",
+            "babel-preset-env": "^1.7.0",
+            "babelify": "^7.3.0",
+            "json-rpc-error": "^2.0.0",
+            "promise-to-callback": "^1.0.0",
+            "safe-event-emitter": "^1.0.1"
+          }
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        }
+      }
+    },
+    "eth-json-rpc-middleware": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/eth-json-rpc-middleware/-/eth-json-rpc-middleware-5.0.2.tgz",
+      "integrity": "sha512-Ezx+wphVQJbrkRSx3Z2EPQZa4JgzA0o0ZCPOdoGtYTTT0SpdzC4BnvafxMS7H2o+QsRcvOvOJmzu7hbf2eVR7w==",
+      "requires": {
+        "btoa": "^1.2.1",
+        "clone": "^2.1.1",
+        "eth-query": "^2.1.2",
+        "eth-rpc-errors": "^2.1.1",
+        "eth-sig-util": "^1.4.2",
+        "ethereumjs-block": "^1.6.0",
+        "ethereumjs-tx": "^1.3.7",
+        "ethereumjs-util": "^5.1.2",
+        "ethereumjs-vm": "^2.6.0",
+        "fetch-ponyfill": "^4.0.0",
+        "json-rpc-engine": "^5.1.3",
+        "json-stable-stringify": "^1.0.1",
+        "pify": "^3.0.0",
+        "safe-event-emitter": "^1.0.1"
+      },
+      "dependencies": {
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18="
+        },
+        "eth-rpc-errors": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/eth-rpc-errors/-/eth-rpc-errors-2.1.1.tgz",
+          "integrity": "sha512-MY3zAa5ZF8hvgQu1HOF9agaK5GgigBRGpTJ8H0oVlE0NqMu13CW6syyjLXdeIDCGQTbUeHliU1z9dVmvMKx1Tg==",
+          "requires": {
+            "fast-safe-stringify": "^2.0.6"
+          }
+        },
+        "eth-sig-util": {
+          "version": "1.4.2",
+          "resolved": "https://registry.npmjs.org/eth-sig-util/-/eth-sig-util-1.4.2.tgz",
+          "integrity": "sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=",
+          "requires": {
+            "ethereumjs-abi": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+            "ethereumjs-util": "^5.1.1"
+          }
+        },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+        }
+      }
+    },
     "eth-lib": {
       "version": "0.1.27",
       "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.1.27.tgz",
@@ -3447,11 +3956,302 @@
         "xhr-request-promise": "^0.1.2"
       }
     },
+    "eth-query": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/eth-query/-/eth-query-2.1.2.tgz",
+      "integrity": "sha1-1nQdkAAQa1FRDHLbktY2VFam2l4=",
+      "requires": {
+        "json-rpc-random-id": "^1.0.0",
+        "xtend": "^4.0.1"
+      }
+    },
+    "eth-rpc-errors": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/eth-rpc-errors/-/eth-rpc-errors-3.0.0.tgz",
+      "integrity": "sha512-iPPNHPrLwUlR9xCSYm7HHQjWBasor3+KZfRvwEWxMz3ca0yqnlBeJrnyphkGIXZ4J7AMAaOLmwy4AWhnxOiLxg==",
+      "requires": {
+        "fast-safe-stringify": "^2.0.6"
+      }
+    },
+    "eth-sig-util": {
+      "version": "2.5.3",
+      "resolved": "https://registry.npmjs.org/eth-sig-util/-/eth-sig-util-2.5.3.tgz",
+      "integrity": "sha512-KpXbCKmmBUNUTGh9MRKmNkIPietfhzBqqYqysDavLseIiMUGl95k6UcPEkALAZlj41e9E6yioYXc1PC333RKqw==",
+      "requires": {
+        "buffer": "^5.2.1",
+        "elliptic": "^6.4.0",
+        "ethereumjs-abi": "0.6.5",
+        "ethereumjs-util": "^5.1.1",
+        "tweetnacl": "^1.0.0",
+        "tweetnacl-util": "^0.15.0"
+      },
+      "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"
+          }
+        },
+        "ethereumjs-abi": {
+          "version": "0.6.5",
+          "resolved": "https://registry.npmjs.org/ethereumjs-abi/-/ethereumjs-abi-0.6.5.tgz",
+          "integrity": "sha1-WmN+8Wq0NHP6cqKa2QhxQFs/UkE=",
+          "requires": {
+            "bn.js": "^4.10.0",
+            "ethereumjs-util": "^4.3.0"
+          },
+          "dependencies": {
+            "elliptic": {
+              "version": "6.5.3",
+              "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+              "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
+              "requires": {
+                "bn.js": "^4.4.0",
+                "brorand": "^1.0.1",
+                "hash.js": "^1.0.0",
+                "hmac-drbg": "^1.0.0",
+                "inherits": "^2.0.1",
+                "minimalistic-assert": "^1.0.0",
+                "minimalistic-crypto-utils": "^1.0.0"
+              }
+            },
+            "ethereumjs-util": {
+              "version": "4.5.1",
+              "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-4.5.1.tgz",
+              "integrity": "sha512-WrckOZ7uBnei4+AKimpuF1B3Fv25OmoRgmYCpGsP7u8PFxXAmAgiJSYT2kRWnt6fVIlKaQlZvuwXp7PIrmn3/w==",
+              "requires": {
+                "bn.js": "^4.8.0",
+                "create-hash": "^1.1.2",
+                "elliptic": "^6.5.2",
+                "ethereum-cryptography": "^0.1.3",
+                "rlp": "^2.0.0"
+              }
+            }
+          }
+        },
+        "tweetnacl": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-1.0.3.tgz",
+          "integrity": "sha512-6rt+RN7aOi1nGMyC4Xa5DdYiukl2UWCbcJft7YhxReBGQD7OAM8Pbxw6YMo4r2diNEA8FEmu32YOn9rhaiE5yw=="
+        }
+      }
+    },
+    "eth-tx-summary": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/eth-tx-summary/-/eth-tx-summary-3.2.4.tgz",
+      "integrity": "sha512-NtlDnaVZah146Rm8HMRUNMgIwG/ED4jiqk0TME9zFheMl1jOp6jL1m0NKGjJwehXQ6ZKCPr16MTr+qspKpEXNg==",
+      "requires": {
+        "async": "^2.1.2",
+        "clone": "^2.0.0",
+        "concat-stream": "^1.5.1",
+        "end-of-stream": "^1.1.0",
+        "eth-query": "^2.0.2",
+        "ethereumjs-block": "^1.4.1",
+        "ethereumjs-tx": "^1.1.1",
+        "ethereumjs-util": "^5.0.1",
+        "ethereumjs-vm": "^2.6.0",
+        "through2": "^2.0.3"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18="
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        }
+      }
+    },
     "ethereum-common": {
       "version": "0.0.18",
       "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.0.18.tgz",
       "integrity": "sha1-L9w1dvIykDNYl26znaeDIT/5Uj8="
     },
+    "ethereum-cryptography": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-0.1.3.tgz",
+      "integrity": "sha512-w8/4x1SGGzc+tO97TASLja6SLd3fRIK2tLVcV2Gx4IB21hE19atll5Cq9o3d0ZmAYC/8aw0ipieTSiekAea4SQ==",
+      "requires": {
+        "@types/pbkdf2": "^3.0.0",
+        "@types/secp256k1": "^4.0.1",
+        "blakejs": "^1.1.0",
+        "browserify-aes": "^1.2.0",
+        "bs58check": "^2.1.2",
+        "create-hash": "^1.2.0",
+        "create-hmac": "^1.1.7",
+        "hash.js": "^1.1.7",
+        "keccak": "^3.0.0",
+        "pbkdf2": "^3.0.17",
+        "randombytes": "^2.1.0",
+        "safe-buffer": "^5.1.2",
+        "scrypt-js": "^3.0.0",
+        "secp256k1": "^4.0.1",
+        "setimmediate": "^1.0.5"
+      },
+      "dependencies": {
+        "elliptic": {
+          "version": "6.5.3",
+          "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+          "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
+          "requires": {
+            "bn.js": "^4.4.0",
+            "brorand": "^1.0.1",
+            "hash.js": "^1.0.0",
+            "hmac-drbg": "^1.0.0",
+            "inherits": "^2.0.1",
+            "minimalistic-assert": "^1.0.0",
+            "minimalistic-crypto-utils": "^1.0.0"
+          }
+        },
+        "hash.js": {
+          "version": "1.1.7",
+          "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
+          "integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "minimalistic-assert": "^1.0.1"
+          }
+        },
+        "keccak": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/keccak/-/keccak-3.0.1.tgz",
+          "integrity": "sha512-epq90L9jlFWCW7+pQa6JOnKn2Xgl2mtI664seYR6MHskvI9agt7AnDqmAlp9TqU4/caMYbA08Hi5DMZAl5zdkA==",
+          "requires": {
+            "node-addon-api": "^2.0.0",
+            "node-gyp-build": "^4.2.0"
+          }
+        },
+        "pbkdf2": {
+          "version": "3.1.1",
+          "resolved": "https://registry.npmjs.org/pbkdf2/-/pbkdf2-3.1.1.tgz",
+          "integrity": "sha512-4Ejy1OPxi9f2tt1rRV7Go7zmfDQ+ZectEQz3VGUQhgq62HtIRPDyG/JtnwIxs6x3uNMwo2V7q1fMvKjb+Tnpqg==",
+          "requires": {
+            "create-hash": "^1.1.2",
+            "create-hmac": "^1.1.4",
+            "ripemd160": "^2.0.1",
+            "safe-buffer": "^5.0.1",
+            "sha.js": "^2.4.8"
+          }
+        },
+        "secp256k1": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-4.0.2.tgz",
+          "integrity": "sha512-UDar4sKvWAksIlfX3xIaQReADn+WFnHvbVujpcbr+9Sf/69odMwy2MUsz5CKLQgX9nsIyrjuxL2imVyoNHa3fg==",
+          "requires": {
+            "elliptic": "^6.5.2",
+            "node-addon-api": "^2.0.0",
+            "node-gyp-build": "^4.2.0"
+          }
+        }
+      }
+    },
+    "ethereumjs-abi": {
+      "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#1ce6a1d64235fabe2aaf827fd606def55693508f",
+      "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+      "requires": {
+        "bn.js": "^4.11.8",
+        "ethereumjs-util": "^6.0.0"
+      },
+      "dependencies": {
+        "elliptic": {
+          "version": "6.5.3",
+          "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+          "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
+          "requires": {
+            "bn.js": "^4.4.0",
+            "brorand": "^1.0.1",
+            "hash.js": "^1.0.0",
+            "hmac-drbg": "^1.0.0",
+            "inherits": "^2.0.1",
+            "minimalistic-assert": "^1.0.0",
+            "minimalistic-crypto-utils": "^1.0.0"
+          }
+        },
+        "ethereumjs-util": {
+          "version": "6.2.1",
+          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-6.2.1.tgz",
+          "integrity": "sha512-W2Ktez4L01Vexijrm5EB6w7dg4n/TgpoYU4avuT5T3Vmnw/eCRtiBrJfQYS/DCSvDIOLn2k57GcHdeBcgVxAqw==",
+          "requires": {
+            "@types/bn.js": "^4.11.3",
+            "bn.js": "^4.11.0",
+            "create-hash": "^1.1.2",
+            "elliptic": "^6.5.2",
+            "ethereum-cryptography": "^0.1.3",
+            "ethjs-util": "0.1.6",
+            "rlp": "^2.2.3"
+          }
+        },
+        "rlp": {
+          "version": "2.2.6",
+          "resolved": "https://registry.npmjs.org/rlp/-/rlp-2.2.6.tgz",
+          "integrity": "sha512-HAfAmL6SDYNWPUOJNrM500x4Thn4PZsEy5pijPh40U9WfNk0z15hUYzO9xVIMAdIHdFtD8CBDHd75Td1g36Mjg==",
+          "requires": {
+            "bn.js": "^4.11.1"
+          }
+        }
+      }
+    },
+    "ethereumjs-account": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/ethereumjs-account/-/ethereumjs-account-2.0.5.tgz",
+      "integrity": "sha512-bgDojnXGjhMwo6eXQC0bY6UK2liSFUSMwwylOmQvZbSl/D7NXQ3+vrGO46ZeOgjGfxXmgIeVNDIiHw7fNZM4VA==",
+      "requires": {
+        "ethereumjs-util": "^5.0.0",
+        "rlp": "^2.0.0",
+        "safe-buffer": "^5.1.1"
+      }
+    },
+    "ethereumjs-block": {
+      "version": "1.7.1",
+      "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
+      "integrity": "sha512-B+sSdtqm78fmKkBq78/QLKJbu/4Ts4P2KFISdgcuZUPDm9x+N7qgBPIIFUGbaakQh8bzuquiRVbdmvPKqbILRg==",
+      "requires": {
+        "async": "^2.0.1",
+        "ethereum-common": "0.2.0",
+        "ethereumjs-tx": "^1.2.2",
+        "ethereumjs-util": "^5.0.0",
+        "merkle-patricia-tree": "^2.1.2"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "ethereum-common": {
+          "version": "0.2.0",
+          "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.2.0.tgz",
+          "integrity": "sha512-XOnAR/3rntJgbCdGhqdaLIxDLWKLmsZOGhHdBKadEr6gEnJLH52k93Ou+TUdFaPN3hJc3isBZBal3U/XZ15abA=="
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        }
+      }
+    },
+    "ethereumjs-common": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/ethereumjs-common/-/ethereumjs-common-1.5.2.tgz",
+      "integrity": "sha512-hTfZjwGX52GS2jcVO6E2sx4YuFnf0Fhp5ylo4pEPhEffNln7vS59Hr5sLnp3/QCazFLluuBZ+FZ6J5HTp0EqCA=="
+    },
     "ethereumjs-tx": {
       "version": "1.3.7",
       "resolved": "https://registry.npmjs.org/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz",
@@ -3475,6 +4275,112 @@
         "secp256k1": "^3.0.1"
       }
     },
+    "ethereumjs-vm": {
+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/ethereumjs-vm/-/ethereumjs-vm-2.6.0.tgz",
+      "integrity": "sha512-r/XIUik/ynGbxS3y+mvGnbOKnuLo40V5Mj1J25+HEO63aWYREIqvWeRO/hnROlMBE5WoniQmPmhiaN0ctiHaXw==",
+      "requires": {
+        "async": "^2.1.2",
+        "async-eventemitter": "^0.2.2",
+        "ethereumjs-account": "^2.0.3",
+        "ethereumjs-block": "~2.2.0",
+        "ethereumjs-common": "^1.1.0",
+        "ethereumjs-util": "^6.0.0",
+        "fake-merkle-patricia-tree": "^1.0.1",
+        "functional-red-black-tree": "^1.0.1",
+        "merkle-patricia-tree": "^2.3.2",
+        "rustbn.js": "~0.2.0",
+        "safe-buffer": "^5.1.1"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "elliptic": {
+          "version": "6.5.3",
+          "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+          "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
+          "requires": {
+            "bn.js": "^4.4.0",
+            "brorand": "^1.0.1",
+            "hash.js": "^1.0.0",
+            "hmac-drbg": "^1.0.0",
+            "inherits": "^2.0.1",
+            "minimalistic-assert": "^1.0.0",
+            "minimalistic-crypto-utils": "^1.0.0"
+          }
+        },
+        "ethereumjs-block": {
+          "version": "2.2.2",
+          "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-2.2.2.tgz",
+          "integrity": "sha512-2p49ifhek3h2zeg/+da6XpdFR3GlqY3BIEiqxGF8j9aSRIgkb7M1Ky+yULBKJOu8PAZxfhsYA+HxUk2aCQp3vg==",
+          "requires": {
+            "async": "^2.0.1",
+            "ethereumjs-common": "^1.5.0",
+            "ethereumjs-tx": "^2.1.1",
+            "ethereumjs-util": "^5.0.0",
+            "merkle-patricia-tree": "^2.1.2"
+          },
+          "dependencies": {
+            "ethereumjs-util": {
+              "version": "5.2.1",
+              "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz",
+              "integrity": "sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==",
+              "requires": {
+                "bn.js": "^4.11.0",
+                "create-hash": "^1.1.2",
+                "elliptic": "^6.5.2",
+                "ethereum-cryptography": "^0.1.3",
+                "ethjs-util": "^0.1.3",
+                "rlp": "^2.0.0",
+                "safe-buffer": "^5.1.1"
+              }
+            }
+          }
+        },
+        "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": "6.2.1",
+          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-6.2.1.tgz",
+          "integrity": "sha512-W2Ktez4L01Vexijrm5EB6w7dg4n/TgpoYU4avuT5T3Vmnw/eCRtiBrJfQYS/DCSvDIOLn2k57GcHdeBcgVxAqw==",
+          "requires": {
+            "@types/bn.js": "^4.11.3",
+            "bn.js": "^4.11.0",
+            "create-hash": "^1.1.2",
+            "elliptic": "^6.5.2",
+            "ethereum-cryptography": "^0.1.3",
+            "ethjs-util": "0.1.6",
+            "rlp": "^2.2.3"
+          }
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        },
+        "rlp": {
+          "version": "2.2.6",
+          "resolved": "https://registry.npmjs.org/rlp/-/rlp-2.2.6.tgz",
+          "integrity": "sha512-HAfAmL6SDYNWPUOJNrM500x4Thn4PZsEy5pijPh40U9WfNk0z15hUYzO9xVIMAdIHdFtD8CBDHd75Td1g36Mjg==",
+          "requires": {
+            "bn.js": "^4.11.1"
+          }
+        }
+      }
+    },
     "ethereumjs-wallet": {
       "version": "0.6.2",
       "resolved": "https://registry.npmjs.org/ethereumjs-wallet/-/ethereumjs-wallet-0.6.2.tgz",
@@ -3525,12 +4431,6 @@
         "es5-ext": "~0.10.14"
       }
     },
-    "eventemitter3": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.0.tgz",
-      "integrity": "sha1-CQtNbNvWRe0Qv3UNS1QHlC17oWM=",
-      "dev": true
-    },
     "events": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/events/-/events-1.1.1.tgz",
@@ -3725,6 +4625,14 @@
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
       "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU="
     },
+    "fake-merkle-patricia-tree": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/fake-merkle-patricia-tree/-/fake-merkle-patricia-tree-1.0.1.tgz",
+      "integrity": "sha1-S4w6z7Ugr635hgsfFM2M40As3dM=",
+      "requires": {
+        "checkpoint-store": "^1.1.0"
+      }
+    },
     "fast-deep-equal": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
@@ -3741,6 +4649,11 @@
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
       "dev": true
     },
+    "fast-safe-stringify": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.0.7.tgz",
+      "integrity": "sha512-Utm6CdzT+6xsDk2m8S6uL8VHxNwI6Jub+e9NYTcAms28T84pTa25GJQV9j0CY0N1rM8hK4x6grpF2BQf+2qwVA=="
+    },
     "fastparse": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/fastparse/-/fastparse-1.1.1.tgz",
@@ -3786,6 +4699,14 @@
         }
       }
     },
+    "fetch-ponyfill": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/fetch-ponyfill/-/fetch-ponyfill-4.1.0.tgz",
+      "integrity": "sha1-rjzl9zLGReq4fkroeTQUcJsjmJM=",
+      "requires": {
+        "node-fetch": "~1.7.1"
+      }
+    },
     "figures": {
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/figures/-/figures-1.7.0.tgz",
@@ -4080,7 +5001,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -4101,12 +5023,14 @@
         "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=",
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
           "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -4127,7 +5051,8 @@
         "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=",
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
@@ -4278,6 +5203,7 @@
           "version": "3.0.4",
           "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
           "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -4285,12 +5211,14 @@
         "minimist": {
           "version": "0.0.8",
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
-          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.2.4.tgz",
           "integrity": "sha512-hzXIWWet/BzWhYs2b+u7dRHlruXhwdgvlTMDKC6Cb1U7ps6Ac6yQlR39xsbjWJE377YTCtKwIXIpJ5oP+j5y8g==",
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -4309,6 +5237,7 @@
           "version": "0.5.1",
           "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
           "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -4402,6 +5331,7 @@
           "version": "1.4.0",
           "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
           "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -4487,7 +5417,8 @@
         "safe-buffer": {
           "version": "5.1.1",
           "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-          "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
+          "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -4543,6 +5474,7 @@
           "version": "3.0.1",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -4586,12 +5518,14 @@
         "wrappy": {
           "version": "1.0.2",
           "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-          "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+          "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.2.tgz",
-          "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k="
+          "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k=",
+          "optional": true
         }
       }
     },
@@ -4610,6 +5544,11 @@
         "is-callable": "^1.1.3"
       }
     },
+    "functional-red-black-tree": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz",
+      "integrity": "sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc="
+    },
     "generate-function": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/generate-function/-/generate-function-2.0.0.tgz",
@@ -5082,14 +6021,22 @@
       "dev": true
     },
     "http-proxy": {
-      "version": "1.17.0",
-      "resolved": "https://registry.npmjs.org/http-proxy/-/http-proxy-1.17.0.tgz",
-      "integrity": "sha1-etOElGWPhGBeL220Q230EPTlvpo=",
+      "version": "1.18.1",
+      "resolved": "https://registry.npmjs.org/http-proxy/-/http-proxy-1.18.1.tgz",
+      "integrity": "sha512-7mz/721AbnJwIVbnaSv1Cz3Am0ZLT/UBwkC92VlxhXv/k/BBQfM2fXElQNC27BVGr0uwUpplYPQM9LnaBMR5NQ==",
       "dev": true,
       "requires": {
-        "eventemitter3": "^3.0.0",
+        "eventemitter3": "^4.0.0",
         "follow-redirects": "^1.0.0",
         "requires-port": "^1.0.0"
+      },
+      "dependencies": {
+        "eventemitter3": {
+          "version": "4.0.7",
+          "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.7.tgz",
+          "integrity": "sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==",
+          "dev": true
+        }
       }
     },
     "http-proxy-middleware": {
@@ -5166,11 +6113,18 @@
       "integrity": "sha1-Bupvg2ead0njhs/h/oEq5dsiPe0=",
       "dev": true
     },
+    "idempotent-babel-polyfill": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/idempotent-babel-polyfill/-/idempotent-babel-polyfill-0.1.1.tgz",
+      "integrity": "sha512-Z9jK+UtNGVYZ4TqIIXtEhtBownbzvBCKyVOe6v/hQifq2DV0xDBCTAqh+QZ9uylcvnHvSkow0NttiOS+tz5jrw==",
+      "requires": {
+        "babel-polyfill": "^6.26.0"
+      }
+    },
     "ieee754": {
       "version": "1.1.12",
       "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.12.tgz",
-      "integrity": "sha1-UL8k5bnIu5ivSWTJQc2wkY2ntgs=",
-      "dev": true
+      "integrity": "sha1-UL8k5bnIu5ivSWTJQc2wkY2ntgs="
     },
     "iferr": {
       "version": "0.1.5",
@@ -5189,6 +6143,11 @@
       "resolved": "https://registry.npmjs.org/image-exists/-/image-exists-1.1.0.tgz",
       "integrity": "sha1-uknMy63cqMu/EPicr9TRyOz9ONA="
     },
+    "immediate": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/immediate/-/immediate-3.3.0.tgz",
+      "integrity": "sha512-HR7EVodfFUdQCTIeySw+WDRFJlPcLOJbXfwwZ7Oom6tjsvZ3bOkCDJHehQC3nxJrv7+f9XecwazynjU8e4Vw3Q=="
+    },
     "immutable-ops": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/immutable-ops/-/immutable-ops-0.5.2.tgz",
@@ -5281,6 +6240,11 @@
       "integrity": "sha1-UFMN+4T8yap9vnhS6Do3uTufKqY=",
       "dev": true
     },
+    "is-arguments": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/is-arguments/-/is-arguments-1.0.4.tgz",
+      "integrity": "sha512-xPh0Rmt8NE65sNzvyUmWgI1tz3mKq74lGA0mL8LYZcoIzKOzDh6HmrYm3d18k60nHerC8A9Km8kYu87zfSFnLA=="
+    },
     "is-arrayish": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.2.1.tgz",
@@ -5363,6 +6327,11 @@
         "number-is-nan": "^1.0.0"
       }
     },
+    "is-fn": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-fn/-/is-fn-1.0.0.tgz",
+      "integrity": "sha1-lUPV3nvPWwiiLsiiC65uKG1RDYw="
+    },
     "is-fullwidth-code-point": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
@@ -6044,6 +7013,28 @@
       "resolved": "https://registry.npmjs.org/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
       "integrity": "sha1-u4Z8+zRQ5pEHwTHRxRS6s9yLyqk="
     },
+    "json-rpc-engine": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/json-rpc-engine/-/json-rpc-engine-5.3.0.tgz",
+      "integrity": "sha512-+diJ9s8rxB+fbJhT7ZEf8r8spaLRignLd8jTgQ/h5JSGppAHGtNMZtCoabipCaleR1B3GTGxbXBOqhaJSGmPGQ==",
+      "requires": {
+        "eth-rpc-errors": "^3.0.0",
+        "safe-event-emitter": "^1.0.1"
+      }
+    },
+    "json-rpc-error": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/json-rpc-error/-/json-rpc-error-2.0.0.tgz",
+      "integrity": "sha1-p6+cICg4tekFxyUOVH8a/3cligI=",
+      "requires": {
+        "inherits": "^2.0.1"
+      }
+    },
+    "json-rpc-random-id": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/json-rpc-random-id/-/json-rpc-random-id-1.0.1.tgz",
+      "integrity": "sha1-uknZat7RRE27jaPSA3SKy7zeyMg="
+    },
     "json-schema": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
@@ -6058,7 +7049,6 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz",
       "integrity": "sha1-mnWdOcXy/1A/1TAGRu1EX4jE+a8=",
-      "dev": true,
       "requires": {
         "jsonify": "~0.0.0"
       }
@@ -6085,8 +7075,7 @@
     "json5": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/json5/-/json5-0.4.0.tgz",
-      "integrity": "sha1-BUNS5MTIDIbAkjh31EneF2pzLI0=",
-      "dev": true
+      "integrity": "sha1-BUNS5MTIDIbAkjh31EneF2pzLI0="
     },
     "jsonfile": {
       "version": "2.4.0",
@@ -6100,8 +7089,7 @@
     "jsonify": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/jsonify/-/jsonify-0.0.0.tgz",
-      "integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM=",
-      "dev": true
+      "integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM="
     },
     "jsonpointer": {
       "version": "4.0.1",
@@ -6173,26 +7161,139 @@
         "graceful-fs": "^4.1.9"
       }
     },
-    "lazy-cache": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/lazy-cache/-/lazy-cache-1.0.4.tgz",
-      "integrity": "sha1-odePw6UEdMuAhF07O24dpJpEbo4=",
-      "dev": true
-    },
-    "lcid": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/lcid/-/lcid-1.0.0.tgz",
-      "integrity": "sha1-MIrMr6C8SDo4Z7S28rlQYlHRuDU=",
-      "dev": true,
+    "lazy-cache": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/lazy-cache/-/lazy-cache-1.0.4.tgz",
+      "integrity": "sha1-odePw6UEdMuAhF07O24dpJpEbo4=",
+      "dev": true
+    },
+    "lcid": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/lcid/-/lcid-1.0.0.tgz",
+      "integrity": "sha1-MIrMr6C8SDo4Z7S28rlQYlHRuDU=",
+      "dev": true,
+      "requires": {
+        "invert-kv": "^1.0.0"
+      }
+    },
+    "left-pad": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz",
+      "integrity": "sha1-W4o6d2Xf4AEmHd6RVYnngvjJTR4="
+    },
+    "level-codec": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/level-codec/-/level-codec-7.0.1.tgz",
+      "integrity": "sha512-Ua/R9B9r3RasXdRmOtd+t9TCOEIIlts+TN/7XTT2unhDaL6sJn83S3rUyljbr6lVtw49N3/yA0HHjpV6Kzb2aQ=="
+    },
+    "level-errors": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/level-errors/-/level-errors-1.0.5.tgz",
+      "integrity": "sha512-/cLUpQduF6bNrWuAC4pwtUKA5t669pCsCi2XbmojG2tFeOr9j6ShtdDCtFFQO1DRt+EVZhx9gPzP9G2bUaG4ig==",
+      "requires": {
+        "errno": "~0.1.1"
+      }
+    },
+    "level-iterator-stream": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/level-iterator-stream/-/level-iterator-stream-1.3.1.tgz",
+      "integrity": "sha1-5Dt4sagUPm+pek9IXrjqUwNS8u0=",
+      "requires": {
+        "inherits": "^2.0.1",
+        "level-errors": "^1.0.3",
+        "readable-stream": "^1.0.33",
+        "xtend": "^4.0.0"
+      },
+      "dependencies": {
+        "isarray": {
+          "version": "0.0.1",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
+          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8="
+        },
+        "readable-stream": {
+          "version": "1.1.14",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.1",
+            "isarray": "0.0.1",
+            "string_decoder": "~0.10.x"
+          }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+        }
+      }
+    },
+    "level-ws": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/level-ws/-/level-ws-0.0.0.tgz",
+      "integrity": "sha1-Ny5RIXeSSgBCSwtDrvK7QkltIos=",
+      "requires": {
+        "readable-stream": "~1.0.15",
+        "xtend": "~2.1.1"
+      },
+      "dependencies": {
+        "isarray": {
+          "version": "0.0.1",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
+          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8="
+        },
+        "object-keys": {
+          "version": "0.4.0",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-0.4.0.tgz",
+          "integrity": "sha1-KKaq50KN0sOpLz2V8hM13SBOAzY="
+        },
+        "readable-stream": {
+          "version": "1.0.34",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.1",
+            "isarray": "0.0.1",
+            "string_decoder": "~0.10.x"
+          }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+        },
+        "xtend": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/xtend/-/xtend-2.1.2.tgz",
+          "integrity": "sha1-bv7MKk2tjmlixJAbM3znuoe10os=",
+          "requires": {
+            "object-keys": "~0.4.0"
+          }
+        }
+      }
+    },
+    "levelup": {
+      "version": "1.3.9",
+      "resolved": "https://registry.npmjs.org/levelup/-/levelup-1.3.9.tgz",
+      "integrity": "sha512-VVGHfKIlmw8w1XqpGOAGwq6sZm2WwWLmlDcULkKWQXEA5EopA8OBNJ2Ck2v6bdk8HeEZSbCSEgzXadyQFm76sQ==",
       "requires": {
-        "invert-kv": "^1.0.0"
+        "deferred-leveldown": "~1.2.1",
+        "level-codec": "~7.0.0",
+        "level-errors": "~1.0.3",
+        "level-iterator-stream": "~1.3.0",
+        "prr": "~1.0.1",
+        "semver": "~5.4.1",
+        "xtend": "~4.0.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "5.4.1",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
+          "integrity": "sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg=="
+        }
       }
     },
-    "left-pad": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz",
-      "integrity": "sha1-W4o6d2Xf4AEmHd6RVYnngvjJTR4="
-    },
     "levn": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
@@ -6357,6 +7458,11 @@
       "resolved": "https://registry.npmjs.org/lodash.debounce/-/lodash.debounce-4.0.8.tgz",
       "integrity": "sha1-gteb/zCmfEAF/9XiUVMArZyk168="
     },
+    "lodash.flatmap": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.flatmap/-/lodash.flatmap-4.5.0.tgz",
+      "integrity": "sha1-74y/QI9uSCaGYzRTBcaswLd4cC4="
+    },
     "lodash.isarguments": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz",
@@ -6434,6 +7540,11 @@
         "yallist": "^2.1.2"
       }
     },
+    "ltgt": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ltgt/-/ltgt-2.2.1.tgz",
+      "integrity": "sha1-81ypHEk/e3PaDgdJUwTxezH4fuU="
+    },
     "make-dir": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-1.3.0.tgz",
@@ -6514,6 +7625,29 @@
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
     },
+    "memdown": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/memdown/-/memdown-1.4.1.tgz",
+      "integrity": "sha1-tOThkhdGZP+65BNhqlAPMRnv4hU=",
+      "requires": {
+        "abstract-leveldown": "~2.7.1",
+        "functional-red-black-tree": "^1.0.1",
+        "immediate": "^3.2.3",
+        "inherits": "~2.0.1",
+        "ltgt": "~2.2.0",
+        "safe-buffer": "~5.1.1"
+      },
+      "dependencies": {
+        "abstract-leveldown": {
+          "version": "2.7.2",
+          "resolved": "https://registry.npmjs.org/abstract-leveldown/-/abstract-leveldown-2.7.2.tgz",
+          "integrity": "sha512-+OVvxH2rHVEhWLdbudP6p0+dNMXu8JA1CbhP19T8paTYAcX7oJ4OVjT+ZUVpv7mITxXHqDMej+GdqXBmXkw09w==",
+          "requires": {
+            "xtend": "~4.0.0"
+          }
+        }
+      }
+    },
     "memoize-one": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/memoize-one/-/memoize-one-4.0.2.tgz",
@@ -6540,6 +7674,21 @@
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
       "integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E="
     },
+    "merkle-patricia-tree": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/merkle-patricia-tree/-/merkle-patricia-tree-2.3.2.tgz",
+      "integrity": "sha512-81PW5m8oz/pz3GvsAwbauj7Y00rqm81Tzad77tHBwU7pIAtN+TJnMSOJhxBKflSVYhptMMb9RskhqHqrSm1V+g==",
+      "requires": {
+        "async": "^1.4.2",
+        "ethereumjs-util": "^5.0.0",
+        "level-ws": "0.0.0",
+        "levelup": "^1.2.1",
+        "memdown": "^1.0.0",
+        "readable-stream": "^2.0.0",
+        "rlp": "^2.0.0",
+        "semaphore": ">=1.0.1"
+      }
+    },
     "methods": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
@@ -6706,6 +7855,11 @@
         "lower-case": "^1.1.1"
       }
     },
+    "node-addon-api": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-2.0.2.tgz",
+      "integrity": "sha512-Ntyt4AIXyaLIuMHF6IOoTakB3K+RWxwtsHNRxllEoA6vPwP9o4866g6YWDLUdnucilZhmkxiHwHr11gAENw+QA=="
+    },
     "node-emoji": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/node-emoji/-/node-emoji-1.8.1.tgz",
@@ -6724,6 +7878,11 @@
         "is-stream": "^1.0.1"
       }
     },
+    "node-gyp-build": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.2.3.tgz",
+      "integrity": "sha512-MN6ZpzmfNCRM+3t57PTJHgHyw/h4OWnZ6mR8P5j/uZtqQr46RRuDE/P+g3n0YR/AiYXeWixZZzaip77gdICfRg=="
+    },
     "node-int64": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/node-int64/-/node-int64-0.4.0.tgz",
@@ -6960,6 +8119,81 @@
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.0.tgz",
       "integrity": "sha1-ejs9DpgGPUP0wD8uiubNUahog6A="
     },
+    "object-inspect": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.7.0.tgz",
+      "integrity": "sha512-a7pEHdh1xKIAgTySUGgLMx/xwDZskN1Ud6egYYN3EdRW4ZMPNEDUTF+hwy2LUC+Bl+SyLXANnwz/jyh/qutKUw=="
+    },
+    "object-is": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/object-is/-/object-is-1.1.2.tgz",
+      "integrity": "sha512-5lHCz+0uufF6wZ7CRFWJN3hp8Jqblpgve06U5CMQ3f//6iDjPr2PEo9MWCjEssDsa+UZEL4PkFpr+BMop6aKzQ==",
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.5"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.6",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.6.tgz",
+          "integrity": "sha512-Fr89bON3WFyUi5EvAeI48QTWX0AyekGgLA8H+c+7fbfCkJwRWRMLd8CQedNEyJuoYYhmtEqY92pgte1FAhBlhw==",
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.2.0",
+            "is-regex": "^1.1.0",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimend": "^1.0.1",
+            "string.prototype.trimstart": "^1.0.1"
+          }
+        },
+        "es-to-primitive": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
+          "integrity": "sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==",
+          "requires": {
+            "is-callable": "^1.1.4",
+            "is-date-object": "^1.0.1",
+            "is-symbol": "^1.0.2"
+          }
+        },
+        "has-symbols": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
+          "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg=="
+        },
+        "is-callable": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.2.0.tgz",
+          "integrity": "sha512-pyVD9AaGLxtg6srb2Ng6ynWJqkHU9bEM087AKck0w8QwDarTfNcpIYoU8x8Hv2Icm8u6kFJM18Dag8lyqGkviw=="
+        },
+        "is-regex": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.1.tgz",
+          "integrity": "sha512-1+QkEcxiLlB7VEyFtyBg94e08OAsvq7FUBgApTq/w2ymCLyKJgDPsybBENVtA7XCQEgEXxKPonG+mvYRxh/LIg==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "is-symbol": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.3.tgz",
+          "integrity": "sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "object-keys": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA=="
+        }
+      }
+    },
     "object-keys": {
       "version": "1.0.12",
       "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.0.12.tgz",
@@ -7223,8 +8457,7 @@
     "path-parse": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
-      "integrity": "sha1-1i27VnlAXXLEc37FhgDp3c8G0kw=",
-      "dev": true
+      "integrity": "sha1-1i27VnlAXXLEc37FhgDp3c8G0kw="
     },
     "path-to-regexp": {
       "version": "0.1.7",
@@ -7260,6 +8493,11 @@
       "integrity": "sha1-tuDI+plJTZTgURV1gCpZpcFC8og=",
       "dev": true
     },
+    "penpal": {
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/penpal/-/penpal-3.0.7.tgz",
+      "integrity": "sha512-WSXiq5HnEvzvY05SHhaXcsviUmCvh4Ze8AiIZzvmdzaaYAAx4rx8c6Xq6+MaVDG/Nfve3VmGD8HyRP3CkPvPbQ=="
+    },
     "performance-now": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
@@ -7310,6 +8548,14 @@
       "integrity": "sha1-0aIUg/0iu0HlihL6NCGCMUCJfEU=",
       "dev": true
     },
+    "pocket-js-core": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/pocket-js-core/-/pocket-js-core-0.0.3.tgz",
+      "integrity": "sha512-OUTEvEVutdjLT6YyldvAlSebpBueUUWg2XKxGNt5u3QqrmLpBOOBmdDnGMNJ+lEwXtko+JqgwFq+HTi4g1QDVg==",
+      "requires": {
+        "axios": "^0.18.0"
+      }
+    },
     "postcss": {
       "version": "5.2.18",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.2.18.tgz",
@@ -7927,6 +9173,11 @@
         "uniqs": "^2.0.0"
       }
     },
+    "precond": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/precond/-/precond-0.2.3.tgz",
+      "integrity": "sha1-qpWRvKokkj8eD0hJ0kD0fvwQdaw="
+    },
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
@@ -7998,6 +9249,15 @@
       "integrity": "sha1-mEcocL8igTL8vdhoEputEsPAKeM=",
       "dev": true
     },
+    "promise-to-callback": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/promise-to-callback/-/promise-to-callback-1.0.0.tgz",
+      "integrity": "sha1-XSp0kBC/tn2WNZj805YHRqaP7vc=",
+      "requires": {
+        "is-fn": "^1.0.0",
+        "set-immediate-shim": "^1.0.1"
+      }
+    },
     "prop-types": {
       "version": "15.6.2",
       "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.6.2.tgz",
@@ -8035,8 +9295,7 @@
     "prr": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/prr/-/prr-1.0.1.tgz",
-      "integrity": "sha1-0/wRS6BplaRexok/SEzrHXj19HY=",
-      "dev": true
+      "integrity": "sha1-0/wRS6BplaRexok/SEzrHXj19HY="
     },
     "pseudomap": {
       "version": "1.0.2",
@@ -8160,6 +9419,14 @@
         }
       }
     },
+    "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"
+      }
+    },
     "randomhex": {
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/randomhex/-/randomhex-0.1.5.tgz",
@@ -8740,6 +10007,76 @@
         "is-equal-shallow": "^0.1.3"
       }
     },
+    "regexp.prototype.flags": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/regexp.prototype.flags/-/regexp.prototype.flags-1.3.0.tgz",
+      "integrity": "sha512-2+Q0C5g951OlYlJz6yu5/M33IcsESLlLfsyIaLJaG4FA2r4yP8MvVMJUUP/fVBkSpbbbZlS5gynbEWLipiiXiQ==",
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.0-next.1"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.6",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.6.tgz",
+          "integrity": "sha512-Fr89bON3WFyUi5EvAeI48QTWX0AyekGgLA8H+c+7fbfCkJwRWRMLd8CQedNEyJuoYYhmtEqY92pgte1FAhBlhw==",
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.2.0",
+            "is-regex": "^1.1.0",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimend": "^1.0.1",
+            "string.prototype.trimstart": "^1.0.1"
+          }
+        },
+        "es-to-primitive": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
+          "integrity": "sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==",
+          "requires": {
+            "is-callable": "^1.1.4",
+            "is-date-object": "^1.0.1",
+            "is-symbol": "^1.0.2"
+          }
+        },
+        "has-symbols": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
+          "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg=="
+        },
+        "is-callable": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.2.0.tgz",
+          "integrity": "sha512-pyVD9AaGLxtg6srb2Ng6ynWJqkHU9bEM087AKck0w8QwDarTfNcpIYoU8x8Hv2Icm8u6kFJM18Dag8lyqGkviw=="
+        },
+        "is-regex": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.1.tgz",
+          "integrity": "sha512-1+QkEcxiLlB7VEyFtyBg94e08OAsvq7FUBgApTq/w2ymCLyKJgDPsybBENVtA7XCQEgEXxKPonG+mvYRxh/LIg==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "is-symbol": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.3.tgz",
+          "integrity": "sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "object-keys": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA=="
+        }
+      }
+    },
     "regexpu-core": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-2.0.0.tgz",
@@ -8888,7 +10225,6 @@
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.8.1.tgz",
       "integrity": "sha1-gvHsGaQjrB+9CAsLqwa6NuhKeiY=",
-      "dev": true,
       "requires": {
         "path-parse": "^1.0.5"
       }
@@ -8914,6 +10250,14 @@
         "onetime": "^1.0.0"
       }
     },
+    "resumer": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/resumer/-/resumer-0.0.0.tgz",
+      "integrity": "sha1-8ej0YeQGS6Oegq883CqMiT0HZ1k=",
+      "requires": {
+        "through": "~2.3.4"
+      }
+    },
     "right-align": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/right-align/-/right-align-0.1.3.tgz",
@@ -8967,6 +10311,11 @@
         "aproba": "^1.1.1"
       }
     },
+    "rustbn.js": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/rustbn.js/-/rustbn.js-0.2.0.tgz",
+      "integrity": "sha512-4VlvkRUuCJvr2J6Y0ImW7NvTCriMi7ErOAqWk1y69vAdoNIzCF3yPmgeNzx+RQTLEDFq5sHfscn1MwHxP9hNfA=="
+    },
     "rx-lite": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-3.1.2.tgz",
@@ -8978,6 +10327,21 @@
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
       "integrity": "sha1-mR7GnSluAxN0fVm9/St0XDX4go0="
     },
+    "safe-event-emitter": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/safe-event-emitter/-/safe-event-emitter-1.0.1.tgz",
+      "integrity": "sha512-e1wFe99A91XYYxoQbcq2ZJUWurxEyP8vfz7A7vuUe1s95q8r5ebraVaA1BukYJcpM6V16ugWoD9vngi8Ccu5fg==",
+      "requires": {
+        "events": "^3.0.0"
+      },
+      "dependencies": {
+        "events": {
+          "version": "3.2.0",
+          "resolved": "https://registry.npmjs.org/events/-/events-3.2.0.tgz",
+          "integrity": "sha512-/46HWwbfCX2xTawVfkKLGxMifJYQBWMwY1mjywRtb4c9x8l5NP3KoJtnIOiL1hfdRkIuYhETxQlo62IF8tcnlg=="
+        }
+      }
+    },
     "safer-buffer": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
@@ -9078,6 +10442,11 @@
         "nan": "^2.0.8"
       }
     },
+    "scrypt-js": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/scrypt-js/-/scrypt-js-3.0.1.tgz",
+      "integrity": "sha512-cdwTTnqPu0Hyvf5in5asVdZocVDTNRmR7XEcJuIzMjJeSHybHl7vpB66AzwTaIg6CLSbtjcxc8fqcySfnTkccA=="
+    },
     "scrypt.js": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/scrypt.js/-/scrypt.js-0.2.0.tgz",
@@ -9110,11 +10479,15 @@
         "safe-buffer": "^5.1.0"
       }
     },
+    "semaphore": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/semaphore/-/semaphore-1.1.0.tgz",
+      "integrity": "sha512-O4OZEaNtkMd/K0i6js9SL+gqy0ZCBMgUvlSqHKi4IBdjhe7wB8pwztUk1BbZ1fmrvpwFrPbHzqd2w5pTcJH6LA=="
+    },
     "semver": {
       "version": "5.5.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.1.tgz",
-      "integrity": "sha1-ff3YgUvbfKvHvg+x1zTPtmyUBHc=",
-      "dev": true
+      "integrity": "sha1-ff3YgUvbfKvHvg+x1zTPtmyUBHc="
     },
     "send": {
       "version": "0.16.2",
@@ -9228,8 +10601,7 @@
     "shebang-regex": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-1.0.0.tgz",
-      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=",
-      "dev": true
+      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM="
     },
     "shelljs": {
       "version": "0.6.1",
@@ -9498,6 +10870,217 @@
         "strip-ansi": "^3.0.0"
       }
     },
+    "string.prototype.trim": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/string.prototype.trim/-/string.prototype.trim-1.2.1.tgz",
+      "integrity": "sha512-MjGFEeqixw47dAMFMtgUro/I0+wNqZB5GKXGt1fFr24u3TzDXCPu7J9Buppzoe3r/LqkSDLDDJzE15RGWDGAVw==",
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.0-next.1",
+        "function-bind": "^1.1.1"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.6",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.6.tgz",
+          "integrity": "sha512-Fr89bON3WFyUi5EvAeI48QTWX0AyekGgLA8H+c+7fbfCkJwRWRMLd8CQedNEyJuoYYhmtEqY92pgte1FAhBlhw==",
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.2.0",
+            "is-regex": "^1.1.0",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimend": "^1.0.1",
+            "string.prototype.trimstart": "^1.0.1"
+          }
+        },
+        "es-to-primitive": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
+          "integrity": "sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==",
+          "requires": {
+            "is-callable": "^1.1.4",
+            "is-date-object": "^1.0.1",
+            "is-symbol": "^1.0.2"
+          }
+        },
+        "has-symbols": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
+          "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg=="
+        },
+        "is-callable": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.2.0.tgz",
+          "integrity": "sha512-pyVD9AaGLxtg6srb2Ng6ynWJqkHU9bEM087AKck0w8QwDarTfNcpIYoU8x8Hv2Icm8u6kFJM18Dag8lyqGkviw=="
+        },
+        "is-regex": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.1.tgz",
+          "integrity": "sha512-1+QkEcxiLlB7VEyFtyBg94e08OAsvq7FUBgApTq/w2ymCLyKJgDPsybBENVtA7XCQEgEXxKPonG+mvYRxh/LIg==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "is-symbol": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.3.tgz",
+          "integrity": "sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "object-keys": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA=="
+        }
+      }
+    },
+    "string.prototype.trimend": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimend/-/string.prototype.trimend-1.0.1.tgz",
+      "integrity": "sha512-LRPxFUaTtpqYsTeNKaFOw3R4bxIzWOnbQ837QfBylo8jIxtcbK/A/sMV7Q+OAV/vWo+7s25pOE10KYSjaSO06g==",
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.5"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.6",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.6.tgz",
+          "integrity": "sha512-Fr89bON3WFyUi5EvAeI48QTWX0AyekGgLA8H+c+7fbfCkJwRWRMLd8CQedNEyJuoYYhmtEqY92pgte1FAhBlhw==",
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.2.0",
+            "is-regex": "^1.1.0",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimend": "^1.0.1",
+            "string.prototype.trimstart": "^1.0.1"
+          }
+        },
+        "es-to-primitive": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
+          "integrity": "sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==",
+          "requires": {
+            "is-callable": "^1.1.4",
+            "is-date-object": "^1.0.1",
+            "is-symbol": "^1.0.2"
+          }
+        },
+        "has-symbols": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
+          "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg=="
+        },
+        "is-callable": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.2.0.tgz",
+          "integrity": "sha512-pyVD9AaGLxtg6srb2Ng6ynWJqkHU9bEM087AKck0w8QwDarTfNcpIYoU8x8Hv2Icm8u6kFJM18Dag8lyqGkviw=="
+        },
+        "is-regex": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.1.tgz",
+          "integrity": "sha512-1+QkEcxiLlB7VEyFtyBg94e08OAsvq7FUBgApTq/w2ymCLyKJgDPsybBENVtA7XCQEgEXxKPonG+mvYRxh/LIg==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "is-symbol": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.3.tgz",
+          "integrity": "sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "object-keys": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA=="
+        }
+      }
+    },
+    "string.prototype.trimstart": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimstart/-/string.prototype.trimstart-1.0.1.tgz",
+      "integrity": "sha512-XxZn+QpvrBI1FOcg6dIpxUPgWCPuNXvMD72aaRaUQv1eD4e/Qy8i/hFTe0BUmD60p/QA6bh1avmuPTfNjqVWRw==",
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.5"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.6",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.6.tgz",
+          "integrity": "sha512-Fr89bON3WFyUi5EvAeI48QTWX0AyekGgLA8H+c+7fbfCkJwRWRMLd8CQedNEyJuoYYhmtEqY92pgte1FAhBlhw==",
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.2.0",
+            "is-regex": "^1.1.0",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimend": "^1.0.1",
+            "string.prototype.trimstart": "^1.0.1"
+          }
+        },
+        "es-to-primitive": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
+          "integrity": "sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==",
+          "requires": {
+            "is-callable": "^1.1.4",
+            "is-date-object": "^1.0.1",
+            "is-symbol": "^1.0.2"
+          }
+        },
+        "has-symbols": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
+          "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg=="
+        },
+        "is-callable": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.2.0.tgz",
+          "integrity": "sha512-pyVD9AaGLxtg6srb2Ng6ynWJqkHU9bEM087AKck0w8QwDarTfNcpIYoU8x8Hv2Icm8u6kFJM18Dag8lyqGkviw=="
+        },
+        "is-regex": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.1.tgz",
+          "integrity": "sha512-1+QkEcxiLlB7VEyFtyBg94e08OAsvq7FUBgApTq/w2ymCLyKJgDPsybBENVtA7XCQEgEXxKPonG+mvYRxh/LIg==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "is-symbol": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.3.tgz",
+          "integrity": "sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==",
+          "requires": {
+            "has-symbols": "^1.0.1"
+          }
+        },
+        "object-keys": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA=="
+        }
+      }
+    },
     "string_decoder": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -9665,6 +11248,69 @@
       "integrity": "sha1-KcNXB8K3DlDQdIK10gLo7URtr9Q=",
       "dev": true
     },
+    "tape": {
+      "version": "4.13.3",
+      "resolved": "https://registry.npmjs.org/tape/-/tape-4.13.3.tgz",
+      "integrity": "sha512-0/Y20PwRIUkQcTCSi4AASs+OANZZwqPKaipGCEwp10dQMipVvSZwUUCi01Y/OklIGyHKFhIcjock+DKnBfLAFw==",
+      "requires": {
+        "deep-equal": "~1.1.1",
+        "defined": "~1.0.0",
+        "dotignore": "~0.1.2",
+        "for-each": "~0.3.3",
+        "function-bind": "~1.1.1",
+        "glob": "~7.1.6",
+        "has": "~1.0.3",
+        "inherits": "~2.0.4",
+        "is-regex": "~1.0.5",
+        "minimist": "~1.2.5",
+        "object-inspect": "~1.7.0",
+        "resolve": "~1.17.0",
+        "resumer": "~0.0.0",
+        "string.prototype.trim": "~1.2.1",
+        "through": "~2.3.8"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
+          "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
+          "requires": {
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.0.4",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
+          }
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
+        "is-regex": {
+          "version": "1.0.5",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.0.5.tgz",
+          "integrity": "sha512-vlKW17SNq44owv5AQR3Cq0bQPEb8+kF3UKZ2fiZNOWtztYE5i0CzCZxFDwO58qAOWtxdBRVO/V5Qin1wjCqFYQ==",
+          "requires": {
+            "has": "^1.0.3"
+          }
+        },
+        "minimist": {
+          "version": "1.2.5",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+          "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw=="
+        },
+        "resolve": {
+          "version": "1.17.0",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.17.0.tgz",
+          "integrity": "sha512-ic+7JYiV8Vi2yzQGFWOkiZD5Z9z7O2Zhm9XMaTxdJExKasieFCr+yXZ/WmXsckHiKl12ar0y6XiXDx3m4RHn1w==",
+          "requires": {
+            "path-parse": "^1.0.6"
+          }
+        }
+      }
+    },
     "test-exclude": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-2.1.3.tgz",
@@ -9693,14 +11339,12 @@
     "through": {
       "version": "2.3.8",
       "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
-      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
-      "dev": true
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
     },
     "through2": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.3.tgz",
       "integrity": "sha1-AARWmzfHx0ujnEPzzteNGtlBQL4=",
-      "dev": true,
       "requires": {
         "readable-stream": "^2.1.5",
         "xtend": "~4.0.1"
@@ -9811,6 +11455,11 @@
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
       "optional": true
     },
+    "tweetnacl-util": {
+      "version": "0.15.1",
+      "resolved": "https://registry.npmjs.org/tweetnacl-util/-/tweetnacl-util-0.15.1.tgz",
+      "integrity": "sha512-RKJBIj8lySrShN4w6i/BonWp2Z/uxwC3h4y7xsRrpP59ZboCd0GpEVsOnMDYLMmKBpYhb5TgHzZXy7wTfYFBRw=="
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -9832,8 +11481,7 @@
     "typedarray": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
-      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
-      "dev": true
+      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "ua-parser-js": {
       "version": "0.7.18",
@@ -10181,6 +11829,26 @@
         "indexof": "0.0.1"
       }
     },
+    "volca-core": {
+      "version": "git+https://github.com/VolcaTech/volca-linkdrop-core.git#7b12d9bee0efe09d4f73eb7d3a12cda8f789c607",
+      "from": "git+https://github.com/VolcaTech/volca-linkdrop-core.git",
+      "requires": {
+        "babel-plugin-add-module-exports": "^0.2.1",
+        "babel-plugin-transform-object-rest-spread": "^6.26.0",
+        "babel-preset-env": "^1.6.1",
+        "bluebird": "^3.5.1",
+        "ethereumjs-tx": "^1.3.3",
+        "ethereumjs-util": "^5.1.2",
+        "ethereumjs-wallet": "^0.6.0",
+        "idempotent-babel-polyfill": "^0.1.1",
+        "querystring": "^0.2.0",
+        "solidity-sha3": "^0.4.1",
+        "uuid": "^3.2.1",
+        "web-utils": "^1.0.0",
+        "web3": "^0.20.1",
+        "web3-utils": "^1.0.0-beta.35"
+      }
+    },
     "walker": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/walker/-/walker-1.0.7.tgz",
@@ -10714,6 +12382,11 @@
           "dev": true
         }
       }
+    },
+    "yarn": {
+      "version": "1.22.5",
+      "resolved": "https://registry.npmjs.org/yarn/-/yarn-1.22.5.tgz",
+      "integrity": "sha512-5uzKXwdMc++mYktXqkfpNYT9tY8ViWegU58Hgbo+KXzrzzhEyP1Ip+BTtXloLrXNcNlxFJbLiFKGaS9vK9ym6Q=="
     }
   }
 }
diff --git a/yarn.lock b/yarn.lock
index f0bf7c1..f501c2a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2089,9 +2089,10 @@ big.js@^3.1.3:
   resolved "https://registry.yarnpkg.com/big.js/-/big.js-3.2.0.tgz#a5fc298b81b9e0dca2e458824784b65c52ba588e"
   integrity sha512-+hN/Zh2D08Mx65pZ/4g5bsmNiZUuChDiQfTUQ7qJr4/kuopCr88xZsAXv6mBoZEsUI4OuGHlX59qE94K2mMW8Q==
 
-"bignumber.js@git+https://github.com/debris/bignumber.js.git#master":
+"bignumber.js@git+https://github.com/debris/bignumber.js#master":
   version "2.0.7"
-  resolved "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9"
+  uid c7a38de919ed75e6fb6ba38051986e294b328df9
+  resolved "git+https://github.com/debris/bignumber.js#c7a38de919ed75e6fb6ba38051986e294b328df9"
 
 "bignumber.js@git+https://github.com/frozeman/bignumber.js-nolookahead.git":
   version "2.0.7"
@@ -4126,10 +4127,10 @@ event-emitter@~0.3.5:
     d "1"
     es5-ext "~0.10.14"
 
-eventemitter3@^3.0.0:
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.2.tgz#2d3d48f9c346698fce83a85d7d664e98535df6e7"
-  integrity sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q==
+eventemitter3@^4.0.0:
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
+  integrity sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==
 
 events@^1.0.0:
   version "1.1.1"
@@ -4537,11 +4538,9 @@ flush-write-stream@^1.0.0:
     readable-stream "^2.3.6"
 
 follow-redirects@^1.0.0:
-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.7.0.tgz#489ebc198dc0e7f64167bd23b03c4c19b5784c76"
-  integrity sha512-m/pZQy4Gj287eNy94nivy5wchN3Kp+Q5WgUPNy5lJSZ3sgkVKSYV/ZChMAQVIgx1SqfZ2zBZtPA2YlXIWxxJOQ==
-  dependencies:
-    debug "^3.2.6"
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
+  integrity sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA==
 
 for-each@^0.3.3, for-each@~0.3.3:
   version "0.3.3"
@@ -5083,11 +5082,11 @@ http-proxy-middleware@~0.17.1:
     micromatch "^2.3.11"
 
 http-proxy@^1.15.1, http-proxy@^1.16.2:
-  version "1.17.0"
-  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.17.0.tgz#7ad38494658f84605e2f6db4436df410f4e5be9a"
-  integrity sha512-Taqn+3nNvYRfJ3bGvKfBSRwy1v6eePlm3oc/aWVxZp57DQr5Eq3xhKJi7Z4hZpS8PC3H4qI+Yly5EmFacGuA/g==
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.18.1.tgz#401541f0534884bbf95260334e72f88ee3976549"
+  integrity sha512-7mz/721AbnJwIVbnaSv1Cz3Am0ZLT/UBwkC92VlxhXv/k/BBQfM2fXElQNC27BVGr0uwUpplYPQM9LnaBMR5NQ==
   dependencies:
-    eventemitter3 "^3.0.0"
+    eventemitter3 "^4.0.0"
     follow-redirects "^1.0.0"
     requires-port "^1.0.0"