diff --git a/package-lock.json b/package-lock.json
index 3b04460..8f5711a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -46,9 +46,9 @@
       }
     },
     "@mybit/network.js": {
-      "version": "0.0.13",
-      "resolved": "https://registry.npmjs.org/@mybit/network.js/-/network.js-0.0.13.tgz",
-      "integrity": "sha512-1n1ca/eLSIH+atyzeL3kcjoagniqOMF9zug/G+qHFx1Xv7jcA71HCNQOv3XqWnSZN2ErhEinTAW5rf6kSK5w0Q==",
+      "version": "0.0.14",
+      "resolved": "https://registry.npmjs.org/@mybit/network.js/-/network.js-0.0.14.tgz",
+      "integrity": "sha512-M1+ep+ByXfgVmRM0XiqiK2rqdKSxRZ02DSMOSdFZGy6wWot+Tiqylts4jKbx8O2lDMSV1Z0XLu3c8IOqOWw/GQ==",
       "requires": {
         "@mybit/contracts": "0.1.12",
         "bignumber.js": "^8.0.2",
@@ -3407,7 +3407,7 @@
         },
         "websocket": {
           "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-          "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
+          "from": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
           "requires": {
             "debug": "^2.2.0",
             "nan": "^2.3.3",
diff --git a/package.json b/package.json
index 262770e..19ced0c 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "dependencies": {
     "@mybit/network-chain": "0.1.16",
     "@mybit/contracts": "0.1.12",
-    "@mybit/network.js": "0.0.13",
+    "@mybit/network.js": "0.0.14",
     "web3": "^1.0.0-beta.36"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index cea02d7..cb95cdd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-"@mybit/contracts@0.1.11":
-  version "0.1.11"
-  resolved "https://registry.yarnpkg.com/@mybit/contracts/-/contracts-0.1.11.tgz#bdfd2326422e247f763273acb7ae9fa342f304c2"
-  integrity sha512-Im1/YdY/jTDBnIUhfuBF58QocpYcWd1HgKSSoEfVPzoSJih3IoLwF99BbkAezOprb2mhgCLld5AQ6+0UcY4+2g==
+"@mybit/contracts@0.1.12":
+  version "0.1.12"
+  resolved "https://registry.yarnpkg.com/@mybit/contracts/-/contracts-0.1.12.tgz#b3d8c161d6dad418936f9519288da7278a62c012"
+  integrity sha512-tvAcrfVJyy1DcEtVGNa5THUh8bXwb6SwuHyLD/uZs/WCAwVC09+M/cHd1wAocFP7iueMDSey37p23wKt1stfng==
   dependencies:
     bignumber.js "^7.2.1"
     ethereumjs-util "^6.0.0"
@@ -13,25 +13,26 @@
     request "^2.87.0"
     solc "0.4.24"
     truffle "5.0.0-beta.0"
-    truffle-hdwallet-provider "0.0.6"
+    truffle-hdwallet-provider "^1.0.2"
     web3 "^1.0.0-beta.36"
     web3-eth-abi "^1.0.0-beta.36"
     web3-utils "^1.0.0-beta.36"
 
-"@mybit/network-chain@^0.1.11":
-  version "0.1.15"
-  resolved "https://registry.yarnpkg.com/@mybit/network-chain/-/network-chain-0.1.15.tgz#b663de8cb01417bc5c4e8e8fc8946aa892b901a2"
-  integrity sha512-REOUmcj67F2IzpXSsdHkkhiWi0QxOs0YkuCfljGxdmjE8oZmL6XotCTN/7U943d8sIDmRPSXkZViZXBYD0xSMA==
+"@mybit/network-chain@0.1.16":
+  version "0.1.16"
+  resolved "https://registry.yarnpkg.com/@mybit/network-chain/-/network-chain-0.1.16.tgz#1ee2303166a2535dbbe4b7e13749d583fe9fb332"
+  integrity sha512-yQ0PBAd9DKvJF83kIq+w30YGgJJh3EEhkyqfktLMAkWAG6ZVSidAFbBGzgGvTrFD1uxVk1lIQvADporhPbePbw==
   dependencies:
     child_process "^1.0.2"
     ganache-cli "6.1.8"
 
-"@mybit/network.js@^0.0.11":
-  version "0.0.11"
-  resolved "https://registry.yarnpkg.com/@mybit/network.js/-/network.js-0.0.11.tgz#3b4292c7bead5a8f283cf274ff88ac08fb3ea1c4"
-  integrity sha512-hSV1Xkz2aEi450O6tN0DDKBA3IqdvXvzxmnQFyPZLXCJ0avR9ifrqjq7GMmLUe/3bwS0DvRj5hFHynm7Ksu+hw==
+"@mybit/network.js@0.0.14":
+  version "0.0.14"
+  resolved "https://registry.yarnpkg.com/@mybit/network.js/-/network.js-0.0.14.tgz#b4c77addff678bf2f518a716e53a0bdda3838cc1"
+  integrity sha512-M1+ep+ByXfgVmRM0XiqiK2rqdKSxRZ02DSMOSdFZGy6wWot+Tiqylts4jKbx8O2lDMSV1Z0XLu3c8IOqOWw/GQ==
   dependencies:
-    "@mybit/contracts" "0.1.11"
+    "@mybit/contracts" "0.1.12"
+    bignumber.js "^8.0.2"
     truffle-contract "3.0.6"
     web3 "1.0.0-beta.36"
 
@@ -40,20 +41,6 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.11.7.tgz#0e75ca9357d646ca754016ca1d68a127ad7e7300"
   integrity sha512-yOxFfkN9xUFLyvWaeYj90mlqTJ41CsQzWKS3gXdOMOyPVacUsymejKxJ4/pMW7exouubuEeZLJawGgcNGYlTeg==
 
-abstract-leveldown@~2.6.0:
-  version "2.6.3"
-  resolved "https://registry.yarnpkg.com/abstract-leveldown/-/abstract-leveldown-2.6.3.tgz#1c5e8c6a5ef965ae8c35dfb3a8770c476b82c4b8"
-  integrity sha512-2++wDf/DYqkPR3o5tbfdhF96EfMApo1GpPfzOsR/ZYXdkSmELlvOOEAl9iKkRsktMPHdGjO4rtkBpf2I7TiTeA==
-  dependencies:
-    xtend "~4.0.0"
-
-abstract-leveldown@~2.7.1:
-  version "2.7.2"
-  resolved "https://registry.yarnpkg.com/abstract-leveldown/-/abstract-leveldown-2.7.2.tgz#87a44d7ebebc341d59665204834c8b7e0932cc93"
-  integrity sha512-+OVvxH2rHVEhWLdbudP6p0+dNMXu8JA1CbhP19T8paTYAcX7oJ4OVjT+ZUVpv7mITxXHqDMej+GdqXBmXkw09w==
-  dependencies:
-    xtend "~4.0.0"
-
 accepts@~1.3.5:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.5.tgz#eb777df6011723a3b14e8a72c0805c8e86746bd2"
@@ -67,11 +54,6 @@ aes-js@3.0.0:
   resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-3.0.0.tgz#e21df10ad6c2053295bcbb8dab40b09dbea87e4d"
   integrity sha1-4h3xCtbCBTKVvLuNq0Cwnb6ofk0=
 
-aes-js@^0.2.3:
-  version "0.2.4"
-  resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-0.2.4.tgz#94b881ab717286d015fa219e08fb66709dda5a3d"
-  integrity sha1-lLiBq3FyhtAV+iGeCPtmcJ3aWj0=
-
 ajv@^5.1.1, ajv@^5.3.0:
   version "5.5.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
@@ -87,11 +69,6 @@ ansi-regex@^2.0.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
   integrity sha1-w7M6te42DYbg5ijwRorn7yfWVN8=
 
-ansi-styles@^2.2.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
-  integrity sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=
-
 any-promise@1.3.0, any-promise@^1.0.0, any-promise@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
@@ -123,37 +100,11 @@ assert-plus@1.0.0, assert-plus@^1.0.0:
   resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz#f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525"
   integrity sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=
 
-async-eventemitter@^0.2.2:
-  version "0.2.4"
-  resolved "https://registry.yarnpkg.com/async-eventemitter/-/async-eventemitter-0.2.4.tgz#f5e7c8ca7d3e46aab9ec40a292baf686a0bafaca"
-  integrity sha512-pd20BwL7Yt1zwDFy+8MX8F1+WCT8aQeKj0kQnTrH9WaeRETlRamVhD0JtRPmrV4GfOJ2F9CvdQkZeZhnh2TuHw==
-  dependencies:
-    async "^2.4.0"
-
-"async-eventemitter@github:ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c":
-  version "0.2.3"
-  uid fa06e39e56786ba541c180061dbf2c0a5bbf951c
-  resolved "https://codeload.github.com/ahultgren/async-eventemitter/tar.gz/fa06e39e56786ba541c180061dbf2c0a5bbf951c"
-  dependencies:
-    async "^2.4.0"
-
 async-limiter@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
   integrity sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==
 
-async@^1.4.2:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
-  integrity sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=
-
-async@^2.0.1, async@^2.1.2, async@^2.4.0, async@^2.5.0:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/async/-/async-2.6.1.tgz#b245a23ca71930044ec53fa46aa00a3e87c6a610"
-  integrity sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==
-  dependencies:
-    lodash "^4.17.10"
-
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -169,542 +120,11 @@ aws4@^1.8.0:
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
   integrity sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==
 
-babel-code-frame@^6.26.0:
-  version "6.26.0"
-  resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
-  integrity sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=
-  dependencies:
-    chalk "^1.1.3"
-    esutils "^2.0.2"
-    js-tokens "^3.0.2"
-
-babel-core@^6.0.14, babel-core@^6.26.0:
-  version "6.26.3"
-  resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.3.tgz#b2e2f09e342d0f0c88e2f02e067794125e75c207"
-  integrity sha512-6jyFLuDmeidKmUEb3NM+/yawG0M2bDZ9Z1qbZP59cyHLz8kYGKYwpJP0UwUKKUiTRNvxfLesJnTedqczP7cTDA==
-  dependencies:
-    babel-code-frame "^6.26.0"
-    babel-generator "^6.26.0"
-    babel-helpers "^6.24.1"
-    babel-messages "^6.23.0"
-    babel-register "^6.26.0"
-    babel-runtime "^6.26.0"
-    babel-template "^6.26.0"
-    babel-traverse "^6.26.0"
-    babel-types "^6.26.0"
-    babylon "^6.18.0"
-    convert-source-map "^1.5.1"
-    debug "^2.6.9"
-    json5 "^0.5.1"
-    lodash "^4.17.4"
-    minimatch "^3.0.4"
-    path-is-absolute "^1.0.1"
-    private "^0.1.8"
-    slash "^1.0.0"
-    source-map "^0.5.7"
-
-babel-generator@^6.26.0:
-  version "6.26.1"
-  resolved "https://registry.yarnpkg.com/babel-generator/-/babel-generator-6.26.1.tgz#1844408d3b8f0d35a404ea7ac180f087a601bd90"
-  integrity sha512-HyfwY6ApZj7BYTcJURpM5tznulaBvyio7/0d4zFOeMPUmfxkCjHocCuoLa2SAGzBI8AREcH3eP3758F672DppA==
-  dependencies:
-    babel-messages "^6.23.0"
-    babel-runtime "^6.26.0"
-    babel-types "^6.26.0"
-    detect-indent "^4.0.0"
-    jsesc "^1.3.0"
-    lodash "^4.17.4"
-    source-map "^0.5.7"
-    trim-right "^1.0.1"
-
-babel-helper-builder-binary-assignment-operator-visitor@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-builder-binary-assignment-operator-visitor/-/babel-helper-builder-binary-assignment-operator-visitor-6.24.1.tgz#cce4517ada356f4220bcae8a02c2b346f9a56664"
-  integrity sha1-zORReto1b0IgvK6KAsKzRvmlZmQ=
-  dependencies:
-    babel-helper-explode-assignable-expression "^6.24.1"
-    babel-runtime "^6.22.0"
-    babel-types "^6.24.1"
-
-babel-helper-call-delegate@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-call-delegate/-/babel-helper-call-delegate-6.24.1.tgz#ece6aacddc76e41c3461f88bfc575bd0daa2df8d"
-  integrity sha1-7Oaqzdx25Bw0YfiL/Fdb0Nqi340=
-  dependencies:
-    babel-helper-hoist-variables "^6.24.1"
-    babel-runtime "^6.22.0"
-    babel-traverse "^6.24.1"
-    babel-types "^6.24.1"
-
-babel-helper-define-map@^6.24.1:
-  version "6.26.0"
-  resolved "https://registry.yarnpkg.com/babel-helper-define-map/-/babel-helper-define-map-6.26.0.tgz#a5f56dab41a25f97ecb498c7ebaca9819f95be5f"
-  integrity sha1-pfVtq0GiX5fstJjH66ypgZ+Vvl8=
-  dependencies:
-    babel-helper-function-name "^6.24.1"
-    babel-runtime "^6.26.0"
-    babel-types "^6.26.0"
-    lodash "^4.17.4"
-
-babel-helper-explode-assignable-expression@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-explode-assignable-expression/-/babel-helper-explode-assignable-expression-6.24.1.tgz#f25b82cf7dc10433c55f70592d5746400ac22caa"
-  integrity sha1-8luCz33BBDPFX3BZLVdGQArCLKo=
-  dependencies:
-    babel-runtime "^6.22.0"
-    babel-traverse "^6.24.1"
-    babel-types "^6.24.1"
-
-babel-helper-function-name@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-function-name/-/babel-helper-function-name-6.24.1.tgz#d3475b8c03ed98242a25b48351ab18399d3580a9"
-  integrity sha1-00dbjAPtmCQqJbSDUasYOZ01gKk=
-  dependencies:
-    babel-helper-get-function-arity "^6.24.1"
-    babel-runtime "^6.22.0"
-    babel-template "^6.24.1"
-    babel-traverse "^6.24.1"
-    babel-types "^6.24.1"
-
-babel-helper-get-function-arity@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-get-function-arity/-/babel-helper-get-function-arity-6.24.1.tgz#8f7782aa93407c41d3aa50908f89b031b1b6853d"
-  integrity sha1-j3eCqpNAfEHTqlCQj4mwMbG2hT0=
-  dependencies:
-    babel-runtime "^6.22.0"
-    babel-types "^6.24.1"
-
-babel-helper-hoist-variables@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-hoist-variables/-/babel-helper-hoist-variables-6.24.1.tgz#1ecb27689c9d25513eadbc9914a73f5408be7a76"
-  integrity sha1-HssnaJydJVE+rbyZFKc/VAi+enY=
-  dependencies:
-    babel-runtime "^6.22.0"
-    babel-types "^6.24.1"
-
-babel-helper-optimise-call-expression@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-optimise-call-expression/-/babel-helper-optimise-call-expression-6.24.1.tgz#f7a13427ba9f73f8f4fa993c54a97882d1244257"
-  integrity sha1-96E0J7qfc/j0+pk8VKl4gtEkQlc=
-  dependencies:
-    babel-runtime "^6.22.0"
-    babel-types "^6.24.1"
-
-babel-helper-regex@^6.24.1:
-  version "6.26.0"
-  resolved "https://registry.yarnpkg.com/babel-helper-regex/-/babel-helper-regex-6.26.0.tgz#325c59f902f82f24b74faceed0363954f6495e72"
-  integrity sha1-MlxZ+QL4LyS3T6zu0DY5VPZJXnI=
-  dependencies:
-    babel-runtime "^6.26.0"
-    babel-types "^6.26.0"
-    lodash "^4.17.4"
-
-babel-helper-remap-async-to-generator@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-remap-async-to-generator/-/babel-helper-remap-async-to-generator-6.24.1.tgz#5ec581827ad723fecdd381f1c928390676e4551b"
-  integrity sha1-XsWBgnrXI/7N04HxySg5BnbkVRs=
-  dependencies:
-    babel-helper-function-name "^6.24.1"
-    babel-runtime "^6.22.0"
-    babel-template "^6.24.1"
-    babel-traverse "^6.24.1"
-    babel-types "^6.24.1"
-
-babel-helper-replace-supers@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helper-replace-supers/-/babel-helper-replace-supers-6.24.1.tgz#bf6dbfe43938d17369a213ca8a8bf74b6a90ab1a"
-  integrity sha1-v22/5Dk40XNpohPKiov3S2qQqxo=
-  dependencies:
-    babel-helper-optimise-call-expression "^6.24.1"
-    babel-messages "^6.23.0"
-    babel-runtime "^6.22.0"
-    babel-template "^6.24.1"
-    babel-traverse "^6.24.1"
-    babel-types "^6.24.1"
-
-babel-helpers@^6.24.1:
-  version "6.24.1"
-  resolved "https://registry.yarnpkg.com/babel-helpers/-/babel-helpers-6.24.1.tgz#3471de9caec388e5c850e597e58a26ddf37602b2"
-  integrity sha1-NHHenK7DiOXIUOWX5Yom3fN2ArI=
-  dependencies:
-    babel-runtime "^6.22.0"
-    babel-template "^6.24.1"
-
-babel-messages@^6.23.0:
-  version "6.23.0"
-  resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz#f3cdf4703858035b2a2951c6ec5edf6c62f2630e"
-  integrity sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=
-  dependencies:
-    babel-runtime "^6.22.0"
-
-babel-plugin-check-es2015-constants@^6.22.0:
-  version "6.22.0"
-  resolved "https://registry.yarnpkg.com/babel-plugin-check-es2015-constants/-/babel-plugin-check-es2015-constants-6.22.0.tgz#35157b101426fd2ffd3da3f75c7d1e91835bbf8a"
-  integrity sha1-NRV7EBQm/S/9PaP3XH0ekYNbv4o=
-  dependencies:
-    babel-runtime "^6.22.0"
-
-babel-plugin-syntax-async-functions@^6.8.0:
-  version "6.13.0"
-  resolved "https://registry.yarnpkg.com/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz#cad9cad1191b5ad634bf30ae0872391e0647be95"
-  integrity sha1-ytnK0RkbWtY0vzCuCHI5HgZHvpU=
-
-babel-plugin-syntax-exponentiation-operator@^6.8.0:
-  version "6.13.0"
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 balanced-match@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
   integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
 
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@@ -727,31 +147,20 @@ bignumber.js@^7.2.1:
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-7.2.1.tgz#80c048759d826800807c4bfd521e50edbba57a5f"
   integrity sha512-S4XzBk5sMB+Rcb/LNcpzXr57VRTxgAvaAEDAl1AwRx27j00hT84O6OkteE7u8UB3NuaaygCRrEpqox4uDOrbdQ==
 
-"bignumber.js@git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2":
-  version "2.0.7"
-  uid "94d7146671b9719e00a09c29b01a691bc85048c2"
-  resolved "git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2"
+bignumber.js@^8.0.2:
+  version "8.0.2"
+  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-8.0.2.tgz#d8c4e1874359573b1ef03011a2d861214aeef137"
+  integrity sha512-EiuvFrnbv0jFixEQ9f58jo7X0qI2lNGIr/MxntmVzQc5JUweDSh8y8hbTCAomFtqwUPIOWcLXP0VEOSZTG7FFw==
 
 "bignumber.js@git+https://github.com/frozeman/bignumber.js-nolookahead.git":
   version "2.0.7"
   resolved "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934"
 
-bindings@^1.2.1:
+bindings@^1.2.1, bindings@^1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.3.1.tgz#21fc7c6d67c18516ec5aaa2815b145ff77b26ea5"
   integrity sha512-i47mqjF9UbjxJhxGf+pZ6kSxrnI3wBLlnGI2ArWJ4r0VrvDS7ZYXkprq/pLaBWYq4GM0r4zdHY+NNRqEMU7uew==
 
-bip39@^2.2.0:
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/bip39/-/bip39-2.5.0.tgz#51cbd5179460504a63ea3c000db3f787ca051235"
-  integrity sha512-xwIx/8JKoT2+IPJpFEfXoWdYwP7UVAoUxxLNfGCfVowaJE7yg1Y5B1BVPqlUNsBq5/nGwmFkwRJ8xDW4sX8OdA==
-  dependencies:
-    create-hash "^1.1.0"
-    pbkdf2 "^3.0.9"
-    randombytes "^2.0.1"
-    safe-buffer "^5.0.1"
-    unorm "^1.3.3"
-
 bip66@^1.1.3:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/bip66/-/bip66-1.1.5.tgz#01fa8748785ca70955d5011217d1b3139969ca22"
@@ -789,7 +198,7 @@ bn.js@4.11.6:
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
   integrity sha1-UzRK2xRhehP26N0s4okF0cC6MhU=
 
-bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.10.0, bn.js@^4.11.0, bn.js@^4.11.3, bn.js@^4.11.6, bn.js@^4.11.8, bn.js@^4.4.0, bn.js@^4.8.0:
+bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.11.0, bn.js@^4.11.3, bn.js@^4.11.6, bn.js@^4.4.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
   integrity sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==
@@ -887,34 +296,6 @@ browserify-sign@^4.0.0:
     inherits "^2.0.1"
     parse-asn1 "^5.0.0"
 
-browserslist@^3.2.6:
-  version "3.2.8"
-  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-3.2.8.tgz#b0005361d6471f0f5952797a76fc985f1f978fc6"
-  integrity sha512-WHVocJYavUwVgVViC0ORikPHQquXwVh939TaelZ4WDqpWgTX/FsGhl/+P4qBUAGcRvtOgDgC+xftNWWp2RUTAQ==
-  dependencies:
-    caniuse-lite "^1.0.30000844"
-    electron-to-chromium "^1.3.47"
-
-bs58@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/bs58/-/bs58-2.0.1.tgz#55908d58f1982aba2008fa1bed8f91998a29bf8d"
-  integrity sha1-VZCNWPGYKrogCPob7Y+RmYopv40=
-
-bs58@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/bs58/-/bs58-3.1.0.tgz#d4c26388bf4804cac714141b1945aa47e5eb248e"
-  integrity sha1-1MJjiL9IBMrHFBQbGUWqR+XrJI4=
-  dependencies:
-    base-x "^1.1.0"
-
-bs58check@^1.0.8:
-  version "1.3.4"
-  resolved "https://registry.yarnpkg.com/bs58check/-/bs58check-1.3.4.tgz#c52540073749117714fa042c3047eb8f9151cbf8"
-  integrity sha1-xSVABzdJEXcU+gQsMEfrj5FRy/g=
-  dependencies:
-    bs58 "^3.1.0"
-    create-hash "^1.1.0"
-
 buffer-alloc-unsafe@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz#bd7dc26ae2972d0eda253be061dba992349c19f0"
@@ -985,34 +366,11 @@ camelcase@^3.0.0:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-3.0.0.tgz#32fc4b9fcdaf845fcdf7e73bb97cac2261f0ab0a"
   integrity sha1-MvxLn82vhF/N9+c7uXysImHwqwo=
 
-caniuse-lite@^1.0.30000844:
-  version "1.0.30000916"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000916.tgz#3428d3f529f0a7b2bfaaec65e796037bdd433aab"
-  integrity sha512-D6J9jloPm2MPkg0PXcODLMQAJKkeixKO9xhqTUMvtd44MtTYMyyDXPQ2Lk9IgBq5FH0frwiPa/N/w8ncQf7kIQ==
-
 caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
   integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
 
-chalk@^1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
-  integrity sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=
-  dependencies:
-    ansi-styles "^2.2.1"
-    escape-string-regexp "^1.0.2"
-    has-ansi "^2.0.0"
-    strip-ansi "^3.0.0"
-    supports-color "^2.0.0"
-
-checkpoint-store@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/checkpoint-store/-/checkpoint-store-1.1.0.tgz#04e4cb516b91433893581e6d4601a78e9552ea06"
-  integrity sha1-BOTLUWuRQziTWB5tRgGnjpVS6gY=
-  dependencies:
-    functional-red-black-tree "^1.0.1"
-
 child_process@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/child_process/-/child_process-1.0.2.tgz#b1f7e7fc73d25e7fd1d455adc94e143830182b5a"
@@ -1035,11 +393,6 @@ cliui@^3.2.0:
     strip-ansi "^3.0.1"
     wrap-ansi "^2.0.0"
 
-clone@^2.0.0:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
-  integrity sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=
-
 co@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
@@ -1050,14 +403,6 @@ code-point-at@^1.0.0:
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
-coinstring@^2.0.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/coinstring/-/coinstring-2.3.0.tgz#cdb63363a961502404a25afb82c2e26d5ff627a4"
-  integrity sha1-zbYzY6lhUCQEolr7gsLibV/2J6Q=
-  dependencies:
-    bs58 "^2.0.1"
-    create-hash "^1.1.1"
-
 combined-stream@1.0.6:
   version "1.0.6"
   resolved "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz#723e7df6e801ac5613113a7e445a9b69cb632818"
@@ -1094,16 +439,6 @@ concat-map@0.0.1:
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
   integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
 
-concat-stream@^1.5.1:
-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
-  integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
-  dependencies:
-    buffer-from "^1.0.0"
-    inherits "^2.0.3"
-    readable-stream "^2.2.2"
-    typedarray "^0.0.6"
-
 content-disposition@0.5.2:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.2.tgz#0cf68bb9ddf5f2be7961c3a85178cb85dba78cb4"
@@ -1114,13 +449,6 @@ content-type@~1.0.4:
   resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.4.tgz#e138cc75e040c727b1966fe5e5f8c9aee256fe3b"
   integrity sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==
 
-convert-source-map@^1.5.1:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.6.0.tgz#51b537a8c43e0f04dec1993bffcdd504e758ac20"
-  integrity sha512-eFu7XigvxdZ1ETfbgPBohgyQ/Z++C0eEhTor0qRwBw9unw+L0/6V8wkSuGgzdThkiS5lSpdptOQPD8Ak40a+7A==
-  dependencies:
-    safe-buffer "~5.1.1"
-
 cookie-signature@1.0.6:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
@@ -1136,11 +464,6 @@ cookiejar@^2.1.1:
   resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.2.tgz#dd8a235530752f988f9a0844f3fc589e3111125c"
   integrity sha512-Mw+adcfzPxcPeI+0WlvRrr/3lGVO0bD75SxX6811cxSh1Wbxx7xZBGK1eVtDf6si8rg2lhnUjsVLMFMfbRIuwA==
 
-core-js@^2.4.0, core-js@^2.5.0:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.0.tgz#1e30793e9ee5782b307e37ffa22da0eacddd84d4"
-  integrity sha512-kLRC6ncVpuEW/1kwrOXYX6KQASCVtrh1gQr/UiaVgFlf9WE5Vp+lNe5+h3LuMr5PAucWnnEXwH0nQHRH/gpGtw==
-
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@@ -1162,7 +485,7 @@ create-ecdh@^4.0.0:
     bn.js "^4.1.0"
     elliptic "^6.0.0"
 
-create-hash@^1.1.0, create-hash@^1.1.1, create-hash@^1.1.2:
+create-hash@^1.1.0, create-hash@^1.1.2:
   version "1.2.0"
   resolved "http://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz#889078af11a63756bcfb59bd221996be3a9ef196"
   integrity sha512-z00bCGNHDG8mHAkP7CtT1qVu+bFQUPjYq/4Iv3C3kWjTFV10zIjfSoeqXo9Asws8gwSHDGj/hl2u4OGIjapeCg==
@@ -1185,14 +508,6 @@ create-hmac@^1.1.0, create-hmac@^1.1.2, create-hmac@^1.1.4:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
-cross-fetch@^2.1.0, cross-fetch@^2.1.1:
-  version "2.2.3"
-  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-2.2.3.tgz#e8a0b3c54598136e037f8650f8e823ccdfac198e"
-  integrity sha512-PrWWNH3yL2NYIb/7WF/5vFG3DCQiXDOVf8k3ijatbrtnwNuhMWLC7YF7uqf53tbTFDzHIUD8oITw4Bxt8ST3Nw==
-  dependencies:
-    node-fetch "2.1.2"
-    whatwg-fetch "2.0.4"
-
 crypto-browserify@3.12.0:
   version "3.12.0"
   resolved "https://registry.yarnpkg.com/crypto-browserify/-/crypto-browserify-3.12.0.tgz#396cf9f3137f03e4b8e532c58f698254e00f80ec"
@@ -1227,7 +542,7 @@ dashdash@^1.12.0:
   dependencies:
     assert-plus "^1.0.0"
 
-debug@2.6.9, debug@^2.2.0, debug@^2.6.8, debug@^2.6.9:
+debug@2.6.9, debug@^2.2.0:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
@@ -1318,30 +633,6 @@ decompress@^4.0.0:
     pify "^2.3.0"
     strip-dirs "^2.0.0"
 
-deep-equal@~1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.0.1.tgz#f5d260292b660e084eff4cdbc9f08ad3247448b5"
-  integrity sha1-9dJgKStmDghO/0zbyfCK0yR0SLU=
-
-deferred-leveldown@~1.2.1:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/deferred-leveldown/-/deferred-leveldown-1.2.2.tgz#3acd2e0b75d1669924bc0a4b642851131173e1eb"
-  integrity sha512-uukrWD2bguRtXilKt6cAWKyoXrTSMo5m7crUdLfWQmu8kIm88w3QZoUL+6nhpfKVmhHANER6Re3sKoNoZ3IKMA==
-  dependencies:
-    abstract-leveldown "~2.6.0"
-
-define-properties@^1.1.2:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
-  integrity sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==
-  dependencies:
-    object-keys "^1.0.12"
-
-defined@~1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/defined/-/defined-1.0.0.tgz#c98d9bcef75674188e110969151199e39b1fa693"
-  integrity sha1-yY2bzvdWdBiOEQlpFRGZ45sfppM=
-
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
@@ -1365,13 +656,6 @@ destroy@~1.0.4:
   resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
   integrity sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=
 
-detect-indent@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-4.0.0.tgz#f76d064352cdf43a1cb6ce619c4ee3a9475de208"
-  integrity sha1-920GQ1LN9Docts5hnE7jqUdd4gg=
-  dependencies:
-    repeating "^2.0.0"
-
 diff@3.3.1:
   version "3.3.1"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.3.1.tgz#aa8567a6eed03c531fc89d3f711cd0e5259dec75"
@@ -1418,11 +702,6 @@ ee-first@1.1.1:
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
   integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
 
-electron-to-chromium@^1.3.47:
-  version "1.3.88"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.88.tgz#f36ab32634f49ef2b0fdc1e82e2d1cc17feb29e7"
-  integrity sha512-UPV4NuQMKeUh1S0OWRvwg0PI8ASHN9kBC8yDTk1ROXLC85W5GnhTRu/MZu3Teqx3JjlQYuckuHYXSUSgtb3J+A==
-
 elliptic@6.3.3:
   version "6.3.3"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.3.3.tgz#5482d9646d54bcb89fd7d994fc9e2e9568876e3f"
@@ -1451,27 +730,13 @@ encodeurl@~1.0.2:
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
   integrity sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=
 
-encoding@^0.1.11:
-  version "0.1.12"
-  resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
-  integrity sha1-U4tm8+5izRq1HsMjgp0flIDHS+s=
-  dependencies:
-    iconv-lite "~0.4.13"
-
-end-of-stream@^1.0.0, end-of-stream@^1.1.0:
+end-of-stream@^1.0.0:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.1.tgz#ed29634d19baba463b6ce6b80a37213eab71ec43"
   integrity sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==
   dependencies:
     once "^1.4.0"
 
-errno@~0.1.1:
-  version "0.1.7"
-  resolved "https://registry.yarnpkg.com/errno/-/errno-0.1.7.tgz#4684d71779ad39af177e3f007996f7c67c852618"
-  integrity sha512-MfrRBDWzIWifgq6tJj60gkAwtLNb6sQPlcFrSOflcP1aFmmruKQ2wRnze/8V6kgyz7H3FF8Npzv78mZ7XLLflg==
-  dependencies:
-    prr "~1.0.1"
-
 error-ex@^1.2.0:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
@@ -1479,73 +744,21 @@ error-ex@^1.2.0:
   dependencies:
     is-arrayish "^0.2.1"
 
-es-abstract@^1.5.0:
-  version "1.12.0"
-  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.12.0.tgz#9dbbdd27c6856f0001421ca18782d786bf8a6165"
-  integrity sha512-C8Fx/0jFmV5IPoMOFPA9P9G5NtqW+4cOPit3MIuvR2t7Ag2K15EJTpxnHAYTzL+aYQJIESYeXZmDBfOBE1HcpA==
-  dependencies:
-    es-to-primitive "^1.1.1"
-    function-bind "^1.1.1"
-    has "^1.0.1"
-    is-callable "^1.1.3"
-    is-regex "^1.0.4"
-
-es-to-primitive@^1.1.1:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.0.tgz#edf72478033456e8dda8ef09e00ad9650707f377"
-  integrity sha512-qZryBOJjV//LaxLTV6UC//WewneB3LcXOL9NP++ozKVXsIIIpm/2c13UDiD9Jp2eThsecw9m3jPqDwTyobcdbg==
-  dependencies:
-    is-callable "^1.1.4"
-    is-date-object "^1.0.1"
-    is-symbol "^1.0.2"
-
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
   integrity sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg=
 
-escape-string-regexp@1.0.5, escape-string-regexp@^1.0.2:
+escape-string-regexp@1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
   integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
 
-esutils@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
-  integrity sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=
-
 etag@~1.8.1:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
   integrity sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=
 
-eth-block-tracker@^2.2.2:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/eth-block-tracker/-/eth-block-tracker-2.3.1.tgz#ab6d177e5b50128fa06d7ae9e0489c7484bac95e"
-  integrity sha512-NamWuMBIl8kmkJFVj8WzGatySTzQPQag4Xr677yFxdVtIxACFbL/dQowk0MzEqIKk93U1TwY3MjVU6mOcwZnKA==
-  dependencies:
-    async-eventemitter "github:ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c"
-    eth-query "^2.1.0"
-    ethereumjs-tx "^1.3.3"
-    ethereumjs-util "^5.1.3"
-    ethjs-util "^0.1.3"
-    json-rpc-engine "^3.6.0"
-    pify "^2.3.0"
-    tape "^4.6.3"
-
-eth-block-tracker@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/eth-block-tracker/-/eth-block-tracker-3.0.1.tgz#95cd5e763c7293e0b1b2790a2a39ac2ac188a5e1"
-  integrity sha512-WUVxWLuhMmsfenfZvFO5sbl1qFY2IqUlw/FPVmjjdElpqLsZtSG+wPe9Dz7W/sB6e80HgFKknOmKk2eNlznHug==
-  dependencies:
-    eth-query "^2.1.0"
-    ethereumjs-tx "^1.3.3"
-    ethereumjs-util "^5.1.3"
-    ethjs-util "^0.1.3"
-    json-rpc-engine "^3.6.0"
-    pify "^2.3.0"
-    tape "^4.6.3"
-
 eth-ens-namehash@2.0.8:
   version "2.0.8"
   resolved "https://registry.yarnpkg.com/eth-ens-namehash/-/eth-ens-namehash-2.0.8.tgz#229ac46eca86d52e0c991e7cb2aef83ff0f68bcf"
@@ -1554,36 +767,6 @@ eth-ens-namehash@2.0.8:
     idna-uts46-hx "^2.3.1"
     js-sha3 "^0.5.7"
 
-eth-json-rpc-infura@^3.1.0:
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/eth-json-rpc-infura/-/eth-json-rpc-infura-3.1.2.tgz#04c5d0cee98619e93ba8a9842492b771b316e83a"
-  integrity sha512-IuK5Iowfs6taluA/3Okmu6EfZcFMq6MQuyrUL1PrCoJstuuBr3TvVeSy3keDyxfbrjFB34nCo538I8G+qMtsbw==
-  dependencies:
-    cross-fetch "^2.1.1"
-    eth-json-rpc-middleware "^1.5.0"
-    json-rpc-engine "^3.4.0"
-    json-rpc-error "^2.0.0"
-    tape "^4.8.0"
-
-eth-json-rpc-middleware@^1.5.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/eth-json-rpc-middleware/-/eth-json-rpc-middleware-1.6.0.tgz#5c9d4c28f745ccb01630f0300ba945f4bef9593f"
-  integrity sha512-tDVCTlrUvdqHKqivYMjtFZsdD7TtpNLBCfKAcOpaVs7orBMS/A8HWro6dIzNtTZIR05FAbJ3bioFOnZpuCew9Q==
-  dependencies:
-    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"
-
 eth-lib@0.1.27, eth-lib@^0.1.26:
   version "0.1.27"
   resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.1.27.tgz#f0b0fd144f865d2d6bf8257a40004f2e75ca1dd6"
@@ -1606,127 +789,6 @@ eth-lib@0.2.7:
     elliptic "^6.4.0"
     xhr-request-promise "^0.1.2"
 
-eth-query@^2.0.2, eth-query@^2.1.0, eth-query@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/eth-query/-/eth-query-2.1.2.tgz#d6741d9000106b51510c72db92d6365456a6da5e"
-  integrity sha1-1nQdkAAQa1FRDHLbktY2VFam2l4=
-  dependencies:
-    json-rpc-random-id "^1.0.0"
-    xtend "^4.0.1"
-
-eth-sig-util@^1.4.2:
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-1.4.2.tgz#8d958202c7edbaae839707fba6f09ff327606210"
-  integrity sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=
-  dependencies:
-    ethereumjs-abi "git+https://github.com/ethereumjs/ethereumjs-abi.git"
-    ethereumjs-util "^5.1.1"
-
-eth-tx-summary@^3.1.2:
-  version "3.2.3"
-  resolved "https://registry.yarnpkg.com/eth-tx-summary/-/eth-tx-summary-3.2.3.tgz#a52d7215616888e012fbc083b3eacd28f3e64764"
-  integrity sha512-1gZpA5fKarJOVSb5OUlPnhDQuIazqAkI61zlVvf5LdG47nEgw+/qhyZnuj3CUdE/TLTKuRzPLeyXLjaB4qWTRQ==
-  dependencies:
-    async "^2.1.2"
-    bn.js "^4.11.8"
-    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 "2.3.4"
-    through2 "^2.0.3"
-    treeify "^1.0.1"
-    web3-provider-engine "^13.3.2"
-
-ethereum-common@0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/ethereum-common/-/ethereum-common-0.2.0.tgz#13bf966131cce1eeade62a1b434249bb4cb120ca"
-  integrity sha512-XOnAR/3rntJgbCdGhqdaLIxDLWKLmsZOGhHdBKadEr6gEnJLH52k93Ou+TUdFaPN3hJc3isBZBal3U/XZ15abA==
-
-ethereum-common@^0.0.18:
-  version "0.0.18"
-  resolved "https://registry.yarnpkg.com/ethereum-common/-/ethereum-common-0.0.18.tgz#2fdc3576f232903358976eb39da783213ff9523f"
-  integrity sha1-L9w1dvIykDNYl26znaeDIT/5Uj8=
-
-"ethereumjs-abi@git+https://github.com/ethereumjs/ethereumjs-abi.git":
-  version "0.6.5"
-  uid "2863c40e0982acfc0b7163f0285d4c56427c7799"
-  resolved "git+https://github.com/ethereumjs/ethereumjs-abi.git#2863c40e0982acfc0b7163f0285d4c56427c7799"
-  dependencies:
-    bn.js "^4.10.0"
-    ethereumjs-util "^5.0.0"
-
-ethereumjs-account@^2.0.3:
-  version "2.0.5"
-  resolved "https://registry.yarnpkg.com/ethereumjs-account/-/ethereumjs-account-2.0.5.tgz#eeafc62de544cb07b0ee44b10f572c9c49e00a84"
-  integrity sha512-bgDojnXGjhMwo6eXQC0bY6UK2liSFUSMwwylOmQvZbSl/D7NXQ3+vrGO46ZeOgjGfxXmgIeVNDIiHw7fNZM4VA==
-  dependencies:
-    ethereumjs-util "^5.0.0"
-    rlp "^2.0.0"
-    safe-buffer "^5.1.1"
-
-ethereumjs-block@^1.2.2, ethereumjs-block@^1.4.1, ethereumjs-block@^1.6.0, ethereumjs-block@~1.7.0:
-  version "1.7.1"
-  resolved "https://registry.yarnpkg.com/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz#78b88e6cc56de29a6b4884ee75379b6860333c3f"
-  integrity sha512-B+sSdtqm78fmKkBq78/QLKJbu/4Ts4P2KFISdgcuZUPDm9x+N7qgBPIIFUGbaakQh8bzuquiRVbdmvPKqbILRg==
-  dependencies:
-    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"
-
-ethereumjs-block@~2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/ethereumjs-block/-/ethereumjs-block-2.1.0.tgz#71d1b19e18061f14cf6371bf34ba31a359931360"
-  integrity sha512-ip+x4/7hUInX+TQfhEKsQh9MJK1Dbjp4AuPjf1UdX3udAV4beYD4EMCNIPzBLCsGS8WQZYXLpo83tVTISYNpow==
-  dependencies:
-    async "^2.0.1"
-    ethereumjs-common "^0.6.0"
-    ethereumjs-tx "^1.2.2"
-    ethereumjs-util "^5.0.0"
-    merkle-patricia-tree "^2.1.2"
-
-ethereumjs-common@^0.6.0:
-  version "0.6.1"
-  resolved "https://registry.yarnpkg.com/ethereumjs-common/-/ethereumjs-common-0.6.1.tgz#ec98edf315a7f107afb6acc48e937a8266979fae"
-  integrity sha512-4jOrfDu9qOBTTGGb3zrfT1tE1Hyc6a8LJpEk0Vk9AYlLkBY7crjVICyJpRvjNI+KLDMpMITMw3eWVZOLMtZdhw==
-
-ethereumjs-tx@^1.1.1, ethereumjs-tx@^1.2.0, ethereumjs-tx@^1.2.2, ethereumjs-tx@^1.3.3:
-  version "1.3.7"
-  resolved "https://registry.yarnpkg.com/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz#88323a2d875b10549b8347e09f4862b546f3d89a"
-  integrity sha512-wvLMxzt1RPhAQ9Yi3/HKZTn0FZYpnsmQdbKYfUUpi4j1SEIcbkd9tndVjcPrufY3V7j2IebOpC00Zp2P/Ay2kA==
-  dependencies:
-    ethereum-common "^0.0.18"
-    ethereumjs-util "^5.0.0"
-
-ethereumjs-util@^4.4.0:
-  version "4.5.0"
-  resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz#3e9428b317eebda3d7260d854fddda954b1f1bc6"
-  integrity sha1-PpQosxfuvaPXJg2FT93alUsfG8Y=
-  dependencies:
-    bn.js "^4.8.0"
-    create-hash "^1.1.2"
-    keccakjs "^0.2.0"
-    rlp "^2.0.0"
-    secp256k1 "^3.0.1"
-
-ethereumjs-util@^5.0.0, ethereumjs-util@^5.0.1, ethereumjs-util@^5.1.1, ethereumjs-util@^5.1.2, ethereumjs-util@^5.1.3, ethereumjs-util@^5.1.5:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-5.2.0.tgz#3e0c0d1741471acf1036052d048623dee54ad642"
-  integrity sha512-CJAKdI0wgMbQFLlLRtZKGcy/L6pzVRgelIZqRqNbuVFM3K9VEnyfbcvz0ncWMRNCe4kaHWjwRYQcYMucmwsnWA==
-  dependencies:
-    bn.js "^4.11.0"
-    create-hash "^1.1.2"
-    ethjs-util "^0.1.3"
-    keccak "^1.0.2"
-    rlp "^2.0.0"
-    safe-buffer "^5.1.1"
-    secp256k1 "^3.0.1"
-
 ethereumjs-util@^6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-6.0.0.tgz#f14841c182b918615afefd744207c7932c8536c0"
@@ -1740,53 +802,6 @@ ethereumjs-util@^6.0.0:
     safe-buffer "^5.1.1"
     secp256k1 "^3.0.1"
 
-ethereumjs-vm@2.3.4:
-  version "2.3.4"
-  resolved "https://registry.yarnpkg.com/ethereumjs-vm/-/ethereumjs-vm-2.3.4.tgz#f635d7cb047571a1840a6e9a74d29de4488f8ad6"
-  integrity sha512-Y4SlzNDqxrCO58jhp98HdnZVdjOqB+HC0hoU+N/DEp1aU+hFkRX/nru5F7/HkQRPIlA6aJlQp/xIA6xZs1kspw==
-  dependencies:
-    async "^2.1.2"
-    async-eventemitter "^0.2.2"
-    ethereum-common "0.2.0"
-    ethereumjs-account "^2.0.3"
-    ethereumjs-block "~1.7.0"
-    ethereumjs-util "^5.1.3"
-    fake-merkle-patricia-tree "^1.0.1"
-    functional-red-black-tree "^1.0.1"
-    merkle-patricia-tree "^2.1.2"
-    rustbn.js "~0.1.1"
-    safe-buffer "^5.1.1"
-
-ethereumjs-vm@^2.0.2, ethereumjs-vm@^2.1.0, ethereumjs-vm@^2.3.4:
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/ethereumjs-vm/-/ethereumjs-vm-2.5.0.tgz#71dde54a093bd813c9defdc6d45ceb8fcca2f603"
-  integrity sha512-Cp1do4J2FIJFnbofqLsKb/aoZKG+Q8NBIbTa1qwZPQkQxzeR3DZVpFk/VbE1EUO6Ha0kSClJ1jzfj07z3cScSQ==
-  dependencies:
-    async "^2.1.2"
-    async-eventemitter "^0.2.2"
-    ethereumjs-account "^2.0.3"
-    ethereumjs-block "~2.1.0"
-    ethereumjs-common "^0.6.0"
-    ethereumjs-util "^6.0.0"
-    fake-merkle-patricia-tree "^1.0.1"
-    functional-red-black-tree "^1.0.1"
-    merkle-patricia-tree "^2.1.2"
-    rustbn.js "~0.2.0"
-    safe-buffer "^5.1.1"
-
-ethereumjs-wallet@0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/ethereumjs-wallet/-/ethereumjs-wallet-0.6.0.tgz#82763b1697ee7a796be7155da9dfb49b2f98cfdb"
-  integrity sha1-gnY7Fpfuenlr5xVdqd+0my+Yz9s=
-  dependencies:
-    aes-js "^0.2.3"
-    bs58check "^1.0.8"
-    ethereumjs-util "^4.4.0"
-    hdkey "^0.7.0"
-    scrypt.js "^0.2.0"
-    utf8 "^2.1.1"
-    uuid "^2.0.1"
-
 ethers@4.0.0-beta.1:
   version "4.0.0-beta.1"
   resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.0-beta.1.tgz#0648268b83e0e91a961b1af971c662cdf8cbab6d"
@@ -1820,7 +835,7 @@ ethjs-unit@0.1.6:
     bn.js "4.11.6"
     number-to-bn "1.7.0"
 
-ethjs-util@^0.1.3, ethjs-util@^0.1.6:
+ethjs-util@^0.1.6:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/ethjs-util/-/ethjs-util-0.1.6.tgz#f308b62f185f9fe6237132fb2a9818866a5cd536"
   integrity sha512-CUnVOQq7gSpDHZVVrQW8ExxUETWrnrvXYvYz55wOU8Uj4VCgw56XC2B/fVqQN+f7gmrnRHSLVnFAwsCuNwji8w==
@@ -1833,11 +848,6 @@ eventemitter3@1.1.1:
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-1.1.1.tgz#47786bdaa087caf7b1b75e73abc5c7d540158cd0"
   integrity sha1-R3hr2qCHyvext15zq8XH1UAVjNA=
 
-events@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/events/-/events-3.0.0.tgz#9a0a0dfaf62893d92b875b8f2698ca4114973e88"
-  integrity sha512-Dc381HFWJzEOhQ+d8pkNon++bk9h6cdAoAj4iE6Q4y6xgTzySWXlKn05/TVNpjnfRqi/X0EpJEJohPjNI3zpVA==
-
 evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz#7fcbdb198dc71959432efe13842684e0525acb02"
@@ -1897,13 +907,6 @@ extsprintf@^1.2.0:
   resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
   integrity sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=
 
-fake-merkle-patricia-tree@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/fake-merkle-patricia-tree/-/fake-merkle-patricia-tree-1.0.1.tgz#4b8c3acfb520afadf9860b1f14cd8ce3402cddd3"
-  integrity sha1-S4w6z7Ugr635hgsfFM2M40As3dM=
-  dependencies:
-    checkpoint-store "^1.1.0"
-
 fast-deep-equal@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz#c053477817c86b51daa853c81e059b733d023614"
@@ -1921,13 +924,6 @@ fd-slicer@~1.1.0:
   dependencies:
     pend "~1.2.0"
 
-fetch-ponyfill@^4.0.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/fetch-ponyfill/-/fetch-ponyfill-4.1.0.tgz#ae3ce5f732c645eab87e4ae8793414709b239893"
-  integrity sha1-rjzl9zLGReq4fkroeTQUcJsjmJM=
-  dependencies:
-    node-fetch "~1.7.1"
-
 file-type@^3.8.0:
   version "3.9.0"
   resolved "http://registry.npmjs.org/file-type/-/file-type-3.9.0.tgz#257a078384d1db8087bc449d107d52a52672b9e9"
@@ -1964,7 +960,7 @@ find-up@^1.0.0:
     path-exists "^2.0.0"
     pinkie-promise "^2.0.0"
 
-for-each@^0.3.2, for-each@~0.3.3:
+for-each@^0.3.2:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.3.tgz#69b447e88a0a5d32c3e7084f3f1710034b21376e"
   integrity sha512-jqYfLp7mo9vIyQf8ykW2v7A+2N4QjeCeI5+Dz9XraiO1ign81wjiH7Fb9vSOWvQfNtmSa4H2RoQTrrXivdUZmw==
@@ -2044,16 +1040,6 @@ fstream@^1.0.2, fstream@^1.0.8:
     mkdirp ">=0.5 0"
     rimraf "2"
 
-function-bind@^1.0.2, function-bind@^1.1.1, function-bind@~1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
-  integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
-
-functional-red-black-tree@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
-  integrity sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
-
 ganache-cli@6.1.8:
   version "6.1.8"
   resolved "https://registry.yarnpkg.com/ganache-cli/-/ganache-cli-6.1.8.tgz#49a8a331683a9652183f82ef1378d17e1814fcd3"
@@ -2098,7 +1084,7 @@ glob@7.1.2:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^7.0.5, glob@~7.1.2:
+glob@^7.0.5:
   version "7.1.3"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
   integrity sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==
@@ -2118,11 +1104,6 @@ global@~4.3.0:
     min-document "^2.19.0"
     process "~0.5.1"
 
-globals@^9.18.0:
-  version "9.18.0"
-  resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
-  integrity sha512-S0nG3CLEQiY/ILxqtztTWH/3iRRdyBLw6KMDxnKMchrtbj2OFmehVh0WUCfW3DUrIgx/qFrJPICrq4Z4sTR9UQ==
-
 got@7.1.0, got@^7.1.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/got/-/got-7.1.0.tgz#05450fd84094e6bbea56f451a43a9c289166385a"
@@ -2171,13 +1152,6 @@ har-validator@~5.1.0:
     ajv "^5.3.0"
     har-schema "^2.0.0"
 
-has-ansi@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
-  integrity sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=
-  dependencies:
-    ansi-regex "^2.0.0"
-
 has-flag@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-2.0.0.tgz#e8207af1cc7b30d446cc70b734b5e8be18f88d51"
@@ -2188,11 +1162,6 @@ has-symbol-support-x@^1.4.1:
   resolved "https://registry.yarnpkg.com/has-symbol-support-x/-/has-symbol-support-x-1.4.2.tgz#1409f98bc00247da45da67cee0a36f282ff26455"
   integrity sha512-3ToOva++HaW+eCpgqZrCfN51IPB+7bJNVT6CUATzueB5Heb8o6Nam0V3HG5dlDvZU1Gn5QLcbahiKw/XVk5JJw==
 
-has-symbols@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
-  integrity sha1-uhqPGvKg/DllD1yFA2dwQSIGO0Q=
-
 has-to-string-tag-x@^1.2.0:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/has-to-string-tag-x/-/has-to-string-tag-x-1.4.1.tgz#a045ab383d7b4b2012a00148ab0aa5f290044d4d"
@@ -2200,13 +1169,6 @@ has-to-string-tag-x@^1.2.0:
   dependencies:
     has-symbol-support-x "^1.4.1"
 
-has@^1.0.1, has@~1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
-  integrity sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==
-  dependencies:
-    function-bind "^1.1.1"
-
 hash-base@^3.0.0:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/hash-base/-/hash-base-3.0.4.tgz#5fc8686847ecd73499403319a6b0a3f3f6ae4918"
@@ -2231,14 +1193,6 @@ hash.js@^1.0.0, hash.js@^1.0.3:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.1"
 
-hdkey@^0.7.0:
-  version "0.7.1"
-  resolved "https://registry.yarnpkg.com/hdkey/-/hdkey-0.7.1.tgz#caee4be81aa77921e909b8d228dd0f29acaee632"
-  integrity sha1-yu5L6BqneSHpCbjSKN0PKayu5jI=
-  dependencies:
-    coinstring "^2.0.0"
-    secp256k1 "^3.0.1"
-
 he@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
@@ -2253,14 +1207,6 @@ hmac-drbg@^1.0.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.1"
 
-home-or-tmp@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"
-  integrity sha1-42w/LSyufXRqhX440Y1fMqeILbg=
-  dependencies:
-    os-homedir "^1.0.0"
-    os-tmpdir "^1.0.1"
-
 hosted-git-info@^2.1.4:
   version "2.7.1"
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.7.1.tgz#97f236977bd6e125408930ff6de3eec6281ec047"
@@ -2297,13 +1243,6 @@ iconv-lite@0.4.23:
   dependencies:
     safer-buffer ">= 2.1.2 < 3"
 
-iconv-lite@~0.4.13:
-  version "0.4.24"
-  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
-  integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
-  dependencies:
-    safer-buffer ">= 2.1.2 < 3"
-
 idna-uts46-hx@^2.3.1:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/idna-uts46-hx/-/idna-uts46-hx-2.3.1.tgz#a1dc5c4df37eee522bf66d969cc980e00e8711f9"
@@ -2316,11 +1255,6 @@ ieee754@^1.1.4:
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.12.tgz#50bf24e5b9c8bb98af4964c941cdb0918da7b60b"
   integrity sha512-GguP+DRY+pJ3soyIiGPTvdiVXjZ+DbXOxGpXn3eMvNW4x4irjqXm4wHKscC+TfxSJ0yw/S1F24tqdMNsMZTiLA==
 
-immediate@^3.2.3:
-  version "3.2.3"
-  resolved "https://registry.yarnpkg.com/immediate/-/immediate-3.2.3.tgz#d140fa8f614659bd6541233097ddaac25cdd991c"
-  integrity sha1-0UD6j2FGWb1lQSMwl92qwlzdmRw=
-
 inflight@^1.0.4:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
@@ -2329,18 +1263,11 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@2.0.3, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.0, inherits@~2.0.1, inherits@~2.0.3:
+inherits@2, inherits@2.0.3, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.0, inherits@~2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
   integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
 
-invariant@^2.2.2:
-  version "2.2.4"
-  resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"
-  integrity sha512-phJfQVBuaJM5raOpJjSfkiD6BpbCE4Ns//LaXl6wGYtUBY83nWS6Rf9tXm2e8VaK60JEjYldbPif/A2B1C2gNA==
-  dependencies:
-    loose-envify "^1.0.0"
-
 invert-kv@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
@@ -2363,28 +1290,11 @@ is-builtin-module@^1.0.0:
   dependencies:
     builtin-modules "^1.0.0"
 
-is-callable@^1.1.3, is-callable@^1.1.4:
+is-callable@^1.1.3:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
   integrity sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==
 
-is-date-object@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.1.tgz#9aa20eb6aeebbff77fbd33e74ca01b33581d3a16"
-  integrity sha1-mqIOtq7rv/d/vTPnTKAbM1gdOhY=
-
-is-finite@^1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.0.2.tgz#cc6677695602be550ef11e8b4aa6305342b6d0aa"
-  integrity sha1-zGZ3aVYCvlUO8R6LSqYwU0K20Ko=
-  dependencies:
-    number-is-nan "^1.0.0"
-
-is-fn@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/is-fn/-/is-fn-1.0.0.tgz#9543d5de7bcf5b08a22ec8a20bae6e286d510d8c"
-  integrity sha1-lUPV3nvPWwiiLsiiC65uKG1RDYw=
-
 is-fullwidth-code-point@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
@@ -2417,30 +1327,16 @@ is-plain-obj@^1.1.0:
   resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-1.1.0.tgz#71a50c8429dfca773c92a390a4a03b39fcd51d3e"
   integrity sha1-caUMhCnfync8kqOQpKA7OfzVHT4=
 
-is-regex@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.4.tgz#5517489b547091b0930e095654ced25ee97e9491"
-  integrity sha1-VRdIm1RwkbCTDglWVM7SXul+lJE=
-  dependencies:
-    has "^1.0.1"
-
 is-retry-allowed@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-retry-allowed/-/is-retry-allowed-1.1.0.tgz#11a060568b67339444033d0125a61a20d564fb34"
   integrity sha1-EaBgVotnM5REAz0BJaYaINVk+zQ=
 
-is-stream@^1.0.0, is-stream@^1.0.1, is-stream@^1.1.0:
+is-stream@^1.0.0, is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
   integrity sha1-EtSj3U5o4Lec6428hBc66A2RykQ=
 
-is-symbol@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.2.tgz#a055f6ae57192caee329e7a860118b497a950f38"
-  integrity sha512-HS8bZ9ox60yCJLH9snBpIwv9pYUAkcuLhSA1oero1UB5y9aiQpRA8y2ex945AOtCZL1lJDeIk3G5LthswI46Lw==
-  dependencies:
-    has-symbols "^1.0.0"
-
 is-typedarray@^1.0.0, is-typedarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
@@ -2451,11 +1347,6 @@ is-utf8@^0.2.0:
   resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"
   integrity sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=
 
-isarray@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
-  integrity sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=
-
 isarray@^1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -2489,55 +1380,11 @@ js-sha3@^0.3.1:
   resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.3.1.tgz#86122802142f0828502a0d1dee1d95e253bb0243"
   integrity sha1-hhIoAhQvCChQKg0d7h2V4lO7AkM=
 
-"js-tokens@^3.0.0 || ^4.0.0":
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
-  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
-
-js-tokens@^3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
-  integrity sha1-mGbfOVECEw449/mWvOtlRDIJwls=
-
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
   integrity sha1-peZUwuWi3rXyAdls77yoDA7y9RM=
 
-jsesc@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
-  integrity sha1-RsP+yMGJKxKwgz25vHYiF226s0s=
-
-jsesc@~0.5.0:
-  version "0.5.0"
-  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
-  integrity sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=
-
-json-rpc-engine@^3.4.0, json-rpc-engine@^3.6.0:
-  version "3.8.0"
-  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-3.8.0.tgz#9d4ff447241792e1d0a232f6ef927302bb0c62a9"
-  integrity sha512-6QNcvm2gFuuK4TKU1uwfH0Qd/cOSb9c1lls0gbnIhciktIUQJwz6NQNAW4B1KiGPenv7IKu97V222Yo1bNhGuA==
-  dependencies:
-    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"
-
-json-rpc-error@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/json-rpc-error/-/json-rpc-error-2.0.0.tgz#a7af9c202838b5e905c7250e547f1aff77258a02"
-  integrity sha1-p6+cICg4tekFxyUOVH8a/3cligI=
-  dependencies:
-    inherits "^2.0.1"
-
-json-rpc-random-id@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/json-rpc-random-id/-/json-rpc-random-id-1.0.1.tgz#ba49d96aded1444dbb8da3d203748acbbcdec8c8"
-  integrity sha1-uknZat7RRE27jaPSA3SKy7zeyMg=
-
 json-schema-traverse@^0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz#349a6d44c53a51de89b40805c5d5e59b417d3340"
@@ -2548,23 +1395,11 @@ json-schema@0.2.3:
   resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
   integrity sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=
 
-json-stable-stringify@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz#9a759d39c5f2ff503fd5300646ed445f88c4f9af"
-  integrity sha1-mnWdOcXy/1A/1TAGRu1EX4jE+a8=
-  dependencies:
-    jsonify "~0.0.0"
-
 json-stringify-safe@~5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
   integrity sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=
 
-json5@^0.5.1:
-  version "0.5.1"
-  resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
-  integrity sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=
-
 jsonfile@^2.1.0:
   version "2.4.0"
   resolved "http://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
@@ -2572,11 +1407,6 @@ jsonfile@^2.1.0:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
-jsonify@~0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/jsonify/-/jsonify-0.0.0.tgz#2c74b6ee41d93ca51b7b5aaee8f503631d252a73"
-  integrity sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM=
-
 jsprim@^1.2.2:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.1.tgz#313e66bc1e5cc06e438bc1b7499c2e5c56acb6a2"
@@ -2597,7 +1427,7 @@ keccak@^1.0.2:
     nan "^2.2.1"
     safe-buffer "^5.1.0"
 
-keccakjs@^0.2.0, keccakjs@^0.2.1:
+keccakjs@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/keccakjs/-/keccakjs-0.2.1.tgz#1d633af907ef305bbf9f2fa616d56c44561dfa4d"
   integrity sha1-HWM6+QfvMFu/ny+mFtVsRFYd+k0=
@@ -2619,56 +1449,6 @@ lcid@^1.0.0:
   dependencies:
     invert-kv "^1.0.0"
 
-level-codec@~7.0.0:
-  version "7.0.1"
-  resolved "https://registry.yarnpkg.com/level-codec/-/level-codec-7.0.1.tgz#341f22f907ce0f16763f24bddd681e395a0fb8a7"
-  integrity sha512-Ua/R9B9r3RasXdRmOtd+t9TCOEIIlts+TN/7XTT2unhDaL6sJn83S3rUyljbr6lVtw49N3/yA0HHjpV6Kzb2aQ==
-
-level-errors@^1.0.3:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/level-errors/-/level-errors-1.1.2.tgz#4399c2f3d3ab87d0625f7e3676e2d807deff404d"
-  integrity sha512-Sw/IJwWbPKF5Ai4Wz60B52yj0zYeqzObLh8k1Tk88jVmD51cJSKWSYpRyhVIvFzZdvsPqlH5wfhp/yxdsaQH4w==
-  dependencies:
-    errno "~0.1.1"
-
-level-errors@~1.0.3:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/level-errors/-/level-errors-1.0.5.tgz#83dbfb12f0b8a2516bdc9a31c4876038e227b859"
-  integrity sha512-/cLUpQduF6bNrWuAC4pwtUKA5t669pCsCi2XbmojG2tFeOr9j6ShtdDCtFFQO1DRt+EVZhx9gPzP9G2bUaG4ig==
-  dependencies:
-    errno "~0.1.1"
-
-level-iterator-stream@~1.3.0:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/level-iterator-stream/-/level-iterator-stream-1.3.1.tgz#e43b78b1a8143e6fa97a4f485eb8ea530352f2ed"
-  integrity sha1-5Dt4sagUPm+pek9IXrjqUwNS8u0=
-  dependencies:
-    inherits "^2.0.1"
-    level-errors "^1.0.3"
-    readable-stream "^1.0.33"
-    xtend "^4.0.0"
-
-level-ws@0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/level-ws/-/level-ws-0.0.0.tgz#372e512177924a00424b0b43aef2bb42496d228b"
-  integrity sha1-Ny5RIXeSSgBCSwtDrvK7QkltIos=
-  dependencies:
-    readable-stream "~1.0.15"
-    xtend "~2.1.1"
-
-levelup@^1.2.1:
-  version "1.3.9"
-  resolved "https://registry.yarnpkg.com/levelup/-/levelup-1.3.9.tgz#2dbcae845b2bb2b6bea84df334c475533bbd82ab"
-  integrity sha512-VVGHfKIlmw8w1XqpGOAGwq6sZm2WwWLmlDcULkKWQXEA5EopA8OBNJ2Ck2v6bdk8HeEZSbCSEgzXadyQFm76sQ==
-  dependencies:
-    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"
-
 load-json-file@^1.0.0:
   version "1.1.0"
   resolved "http://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
@@ -2685,28 +1465,11 @@ lodash.assign@^4.0.3, lodash.assign@^4.0.6:
   resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
   integrity sha1-DZnzzNem0mHRm9rrkkUAXShYCOc=
 
-lodash@^4.17.10, lodash@^4.17.4:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
-
-loose-envify@^1.0.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
-  integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
-  dependencies:
-    js-tokens "^3.0.0 || ^4.0.0"
-
 lowercase-keys@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-1.0.1.tgz#6f9e30b47084d971a7c820ff15a6c5167b74c26f"
   integrity sha512-G2Lj61tXDnVFFOi8VZds+SoQjtQC3dgokKdDG2mTm1tx4m50NUHBOZSBwQQHyy0V12A0JTG4icfZQH+xPyh8VA==
 
-ltgt@~2.2.0:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/ltgt/-/ltgt-2.2.1.tgz#f35ca91c493f7b73da0e07495304f17b31f87ee5"
-  integrity sha1-81ypHEk/e3PaDgdJUwTxezH4fuU=
-
 make-dir@^1.0.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-1.3.0.tgz#79c1033b80515bd6d24ec9933e860ca75ee27f0c"
@@ -2728,18 +1491,6 @@ media-typer@0.3.0:
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
   integrity sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=
 
-memdown@^1.0.0:
-  version "1.4.1"
-  resolved "https://registry.yarnpkg.com/memdown/-/memdown-1.4.1.tgz#b4e4e192174664ffbae41361aa500f3119efe215"
-  integrity sha1-tOThkhdGZP+65BNhqlAPMRnv4hU=
-  dependencies:
-    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"
-
 memorystream@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/memorystream/-/memorystream-0.3.1.tgz#86d7090b30ce455d63fbae12dda51a47ddcaf9b2"
@@ -2750,20 +1501,6 @@ merge-descriptors@1.0.1:
   resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
   integrity sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E=
 
-merkle-patricia-tree@^2.1.2:
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/merkle-patricia-tree/-/merkle-patricia-tree-2.3.2.tgz#982ca1b5a0fde00eed2f6aeed1f9152860b8208a"
-  integrity sha512-81PW5m8oz/pz3GvsAwbauj7Y00rqm81Tzad77tHBwU7pIAtN+TJnMSOJhxBKflSVYhptMMb9RskhqHqrSm1V+g==
-  dependencies:
-    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@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
@@ -2828,11 +1565,6 @@ minimist@0.0.8:
   resolved "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
   integrity sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=
 
-minimist@~1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
-  integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
-
 mkdirp-promise@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/mkdirp-promise/-/mkdirp-promise-5.0.1.tgz#e9b8f68e552c68a9c1713b84883f7a1dd039b8a1"
@@ -2840,7 +1572,7 @@ mkdirp-promise@^5.0.1:
   dependencies:
     mkdirp "*"
 
-mkdirp@*, mkdirp@0.5.1, "mkdirp@>=0.5 0", mkdirp@^0.5.1:
+mkdirp@*, mkdirp@0.5.1, "mkdirp@>=0.5 0":
   version "0.5.1"
   resolved "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   integrity sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=
@@ -2902,6 +1634,11 @@ nan@^2.0.8, nan@^2.2.1, nan@^2.3.3:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.11.1.tgz#90e22bccb8ca57ea4cd37cc83d3819b52eea6766"
   integrity sha512-iji6k87OSXa0CcrLl9z+ZiYSuR2o+c0bGuNmXdrhTQTakxytAFsC56SArGYoiHlJlFoHSnvmhpceZJaXkVuOtA==
 
+nan@^2.11.0:
+  version "2.12.1"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.12.1.tgz#7b1aa193e9aa86057e3c7bbd0ac448e770925552"
+  integrity sha512-JY7V6lRkStKcKTvHO5NVSQRv+RV+FIL5pvDoLiAtSL9pKlC5x9PKQcZDsq7m4FO4d57mkhC6Z+QhAh3Jdk5JFw==
+
 nano-json-stream-parser@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/nano-json-stream-parser/-/nano-json-stream-parser-0.1.2.tgz#0cc8f6d0e2b622b479c40d499c46d64b755c6f5f"
@@ -2912,19 +1649,6 @@ negotiator@0.6.1:
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
   integrity sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk=
 
-node-fetch@2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.1.2.tgz#ab884e8e7e57e38a944753cec706f788d1768bb5"
-  integrity sha1-q4hOjn5X44qUR1POxwb3iNF2i7U=
-
-node-fetch@~1.7.1:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  integrity sha512-NhZ4CsKx7cYm2vSrBAr2PvFOe6sWDf0UYLRqA6svUYg7+/TSfVAu49jYC4BvQ4Sms9SZgdqGBgroqfDhJdTyKQ==
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
-
 normalize-package-data@^2.3.2:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.4.0.tgz#12f95a307d58352075a04907b84ac8be98ac012f"
@@ -2953,26 +1677,11 @@ oauth-sign@~0.9.0:
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
   integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
 
-object-assign@^4, object-assign@^4.0.0, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@^4, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
 
-object-inspect@~1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.6.0.tgz#c70b6cbf72f274aab4c34c0c82f5167bf82cf15b"
-  integrity sha512-GJzfBZ6DgDAmnuaM3104jR4s1Myxr3Y3zfIyN4z3UdqN69oSRacNK8UhnobDdC+7J2AHCjGwxQubNJfE70SXXQ==
-
-object-keys@^1.0.12:
-  version "1.0.12"
-  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.0.12.tgz#09c53855377575310cca62f55bb334abff7b3ed2"
-  integrity sha512-FTMyFUm2wBcGHnH2eXmz7tC6IwlqQZ6mVZ+6dm6vZ4IQIHjs6FdNsQBuKGPuUUUY6NfJw2PshC08Tn6LzLDOag==
-
-object-keys@~0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-0.4.0.tgz#28a6aae7428dd2c3a92f3d95f21335dd204e0336"
-  integrity sha1-KKaq50KN0sOpLz2V8hM13SBOAzY=
-
 oboe@2.1.3:
   version "2.1.3"
   resolved "https://registry.yarnpkg.com/oboe/-/oboe-2.1.3.tgz#2b4865dbd46be81225713f4e9bfe4bcf4f680a4f"
@@ -2999,11 +1708,6 @@ original-require@1.0.1:
   resolved "https://registry.yarnpkg.com/original-require/-/original-require-1.0.1.tgz#0f130471584cd33511c5ec38c8d59213f9ac5e20"
   integrity sha1-DxMEcVhM0zURxew4yNWSE/msXiA=
 
-os-homedir@^1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
-  integrity sha1-/7xJiDNuDoM94MFox+8VISGqf7M=
-
 os-locale@^1.4.0:
   version "1.4.0"
   resolved "http://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz#20f9f17ae29ed345e8bde583b13d2009803c14d9"
@@ -3011,11 +1715,6 @@ os-locale@^1.4.0:
   dependencies:
     lcid "^1.0.0"
 
-os-tmpdir@^1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
-  integrity sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=
-
 p-cancelable@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-0.3.0.tgz#b9e123800bcebb7ac13a479be195b507b98d30fa"
@@ -3071,16 +1770,11 @@ path-exists@^2.0.0:
   dependencies:
     pinkie-promise "^2.0.0"
 
-path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
+path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
   integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
 
-path-parse@^1.0.5:
-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
-  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
-
 path-to-regexp@0.1.7:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
@@ -3095,7 +1789,7 @@ path-type@^1.0.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
-pbkdf2@^3.0.3, pbkdf2@^3.0.9:
+pbkdf2@^3.0.3:
   version "3.0.17"
   resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.17.tgz#976c206530617b14ebb32114239f7b09336e93a6"
   integrity sha512-U/il5MsrZp7mGg3mSQfn742na2T+1/vHDCG5/iTI3X9MKUuYUZVLQhyRsg06mCgDBTd57TxzgZt7P+fYfjRLtA==
@@ -3138,21 +1832,11 @@ pinkie@^2.0.0:
   resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
   integrity sha1-clVrgM+g1IqXToDnckjoDtT3+HA=
 
-precond@0.2:
-  version "0.2.3"
-  resolved "https://registry.yarnpkg.com/precond/-/precond-0.2.3.tgz#aa9591bcaa24923f1e0f4849d240f47efc1075ac"
-  integrity sha1-qpWRvKokkj8eD0hJ0kD0fvwQdaw=
-
 prepend-http@^1.0.1:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
-private@^0.1.6, private@^0.1.8:
-  version "0.1.8"
-  resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
-  integrity sha512-VvivMrbvd2nKkiG38qjULzlc+4Vx4wm/whI9pQD35YrARNnhxeiRktSOhSukRLFNlzg6Br/cJPet5J/u19r/mg==
-
 process-nextick-args@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.0.tgz#a37d732f4271b4ab1ad070d35508e8290788ffaa"
@@ -3163,14 +1847,6 @@ process@~0.5.1:
   resolved "https://registry.yarnpkg.com/process/-/process-0.5.2.tgz#1638d8a8e34c2f440a91db95ab9aeb677fc185cf"
   integrity sha1-FjjYqONML0QKkduVq5rrZ3/Bhc8=
 
-promise-to-callback@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/promise-to-callback/-/promise-to-callback-1.0.0.tgz#5d2a749010bfb67d963598fcd3960746a68feef7"
-  integrity sha1-XSp0kBC/tn2WNZj805YHRqaP7vc=
-  dependencies:
-    is-fn "^1.0.0"
-    set-immediate-shim "^1.0.1"
-
 proxy-addr@~2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.4.tgz#ecfc733bf22ff8c6f407fa275327b9ab67e48b93"
@@ -3179,11 +1855,6 @@ proxy-addr@~2.0.4:
     forwarded "~0.1.2"
     ipaddr.js "1.8.0"
 
-prr@~1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
-  integrity sha1-0/wRS6BplaRexok/SEzrHXj19HY=
-
 psl@^1.1.24:
   version "1.1.29"
   resolved "https://registry.yarnpkg.com/psl/-/psl-1.1.29.tgz#60f580d360170bb722a797cc704411e6da850c67"
@@ -3277,17 +1948,7 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-readable-stream@^1.0.33:
-  version "1.1.14"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
-  integrity sha1-fPTFTvZI44EwhMY23SB54WbAgdk=
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
-readable-stream@^2.0.0, readable-stream@^2.2.2, readable-stream@^2.2.9, readable-stream@^2.3.0, readable-stream@^2.3.5, readable-stream@~2.3.6:
+readable-stream@^2.3.0, readable-stream@^2.3.5:
   version "2.3.6"
   resolved "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
   integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
@@ -3300,64 +1961,7 @@ readable-stream@^2.0.0, readable-stream@^2.2.2, readable-stream@^2.2.9, readable
     string_decoder "~1.1.1"
     util-deprecate "~1.0.1"
 
-readable-stream@~1.0.15:
-  version "1.0.34"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
-  integrity sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
-regenerate@^1.2.1:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.0.tgz#4a856ec4b56e4077c557589cae85e7a4c8869a11"
-  integrity sha512-1G6jJVDWrt0rK99kBjvEtziZNCICAuvIPkSiUFIQxVP06RCVpq3dmDo2oi6ABpYaDYaTRr67BEhL8r1wgEZZKg==
-
-regenerator-runtime@^0.11.0:
-  version "0.11.1"
-  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
-  integrity sha512-MguG95oij0fC3QV3URf4V2SDYGJhJnJGqvIIgdECeODCT98wSWDAJ94SSuVpYQUoTcGUIL6L4yNB7j1DFFHSBg==
-
-regenerator-transform@^0.10.0:
-  version "0.10.1"
-  resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.10.1.tgz#1e4996837231da8b7f3cf4114d71b5691a0680dd"
-  integrity sha512-PJepbvDbuK1xgIgnau7Y90cwaAmO/LCLMI2mPvaXq2heGMR3aWW5/BQvYrhJ8jgmQjXewXvBjzfqKcVOmhjZ6Q==
-  dependencies:
-    babel-runtime "^6.18.0"
-    babel-types "^6.19.0"
-    private "^0.1.6"
-
-regexpu-core@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-2.0.0.tgz#49d038837b8dcf8bfa5b9a42139938e6ea2ae240"
-  integrity sha1-SdA4g3uNz4v6W5pCE5k45uoq4kA=
-  dependencies:
-    regenerate "^1.2.1"
-    regjsgen "^0.2.0"
-    regjsparser "^0.1.4"
-
-regjsgen@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/regjsgen/-/regjsgen-0.2.0.tgz#6c016adeac554f75823fe37ac05b92d5a4edb1f7"
-  integrity sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=
-
-regjsparser@^0.1.4:
-  version "0.1.5"
-  resolved "https://registry.yarnpkg.com/regjsparser/-/regjsparser-0.1.5.tgz#7ee8f84dc6fa792d3fd0ae228d24bd949ead205c"
-  integrity sha1-fuj4Tcb6eS0/0K4ijSS9lJ6tIFw=
-  dependencies:
-    jsesc "~0.5.0"
-
-repeating@^2.0.0:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/repeating/-/repeating-2.0.1.tgz#5214c53a926d3552707527fbab415dbc08d06dda"
-  integrity sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=
-  dependencies:
-    is-finite "^1.0.0"
-
-request@^2.67.0, request@^2.79.0, request@^2.85.0, request@^2.87.0:
+request@^2.79.0, request@^2.87.0:
   version "2.88.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.88.0.tgz#9c2fca4f7d35b592efe57c7f0a55e81052124fef"
   integrity sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==
@@ -3398,20 +2002,6 @@ require-main-filename@^1.0.1:
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
   integrity sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=
 
-resolve@~1.7.1:
-  version "1.7.1"
-  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.7.1.tgz#aadd656374fd298aee895bc026b8297418677fd3"
-  integrity sha512-c7rwLofp8g1U+h1KNyHL/jicrKg1Ek4q+Lr33AL65uZTinUZHe30D5HlyN5V9NW0JX1D5dXQ4jqW5l7Sy/kGfw==
-  dependencies:
-    path-parse "^1.0.5"
-
-resumer@~0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/resumer/-/resumer-0.0.0.tgz#f1e8f461e4064ba39e82af3cdc2a8c893d076759"
-  integrity sha1-8ej0YeQGS6Oegq883CqMiT0HZ1k=
-  dependencies:
-    through "~2.3.4"
-
 rimraf@2, rimraf@^2.2.8:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
@@ -3434,28 +2024,11 @@ rlp@^2.0.0:
   dependencies:
     safe-buffer "^5.1.1"
 
-rustbn.js@~0.1.1:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/rustbn.js/-/rustbn.js-0.1.2.tgz#979fa0f9562216dd667c9d2cd179ae5d13830eff"
-  integrity sha512-bAkNqSHYdJdFsBC7Z11JgzYktL31HIpB2o70jZcGiL1U1TVtPyvaVhDrGWwS8uZtaqwW2k6NOPGZCqW/Dgh5Lg==
-
-rustbn.js@~0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/rustbn.js/-/rustbn.js-0.2.0.tgz#8082cb886e707155fd1cb6f23bd591ab8d55d0ca"
-  integrity sha512-4VlvkRUuCJvr2J6Y0ImW7NvTCriMi7ErOAqWk1y69vAdoNIzCF3yPmgeNzx+RQTLEDFq5sHfscn1MwHxP9hNfA==
-
 safe-buffer@5.1.2, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
 
-safe-event-emitter@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/safe-event-emitter/-/safe-event-emitter-1.0.1.tgz#5b692ef22329ed8f69fdce607e50ca734f6f20af"
-  integrity sha512-e1wFe99A91XYYxoQbcq2ZJUWurxEyP8vfz7A7vuUe1s95q8r5ebraVaA1BukYJcpM6V16ugWoD9vngi8Ccu5fg==
-  dependencies:
-    events "^3.0.0"
-
 "safer-buffer@>= 2.1.2 < 3", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
@@ -3466,7 +2039,7 @@ scrypt-js@2.0.3:
   resolved "http://registry.npmjs.org/scrypt-js/-/scrypt-js-2.0.3.tgz#bb0040be03043da9a012a2cea9fc9f852cfc87d4"
   integrity sha1-uwBAvgMEPamgEqLOqfyfhSz8h9Q=
 
-scrypt.js@0.2.0, scrypt.js@^0.2.0:
+scrypt.js@0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/scrypt.js/-/scrypt.js-0.2.0.tgz#af8d1465b71e9990110bedfc593b9479e03a8ada"
   integrity sha1-r40UZbcemZARC+38WTuUeeA6ito=
@@ -3509,21 +2082,11 @@ seek-bzip@^1.0.5:
   dependencies:
     commander "~2.8.1"
 
-semaphore@>=1.0.1, semaphore@^1.0.3:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/semaphore/-/semaphore-1.1.0.tgz#aaad8b86b20fe8e9b32b16dc2ee682a8cd26a8aa"
-  integrity sha512-O4OZEaNtkMd/K0i6js9SL+gqy0ZCBMgUvlSqHKi4IBdjhe7wB8pwztUk1BbZ1fmrvpwFrPbHzqd2w5pTcJH6LA==
-
 "semver@2 || 3 || 4 || 5", semver@^5.3.0:
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
   integrity sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==
 
-semver@~5.4.1:
-  version "5.4.1"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
-  integrity sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg==
-
 send@0.16.2:
   version "0.16.2"
   resolved "https://registry.yarnpkg.com/send/-/send-0.16.2.tgz#6ecca1e0f8c156d141597559848df64730a6bbc1"
@@ -3569,11 +2132,6 @@ set-blocking@^2.0.0:
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
   integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
 
-set-immediate-shim@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz#4b2b1b27eb808a9f8dcc481a58e5e56f599f3f61"
-  integrity sha1-SysbJ+uAip+NzEgaWOXlb1mfP2E=
-
 setimmediate@1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.4.tgz#20e81de622d4a02588ce0c8da8973cbcf1d3138f"
@@ -3618,11 +2176,6 @@ simple-get@^2.7.0:
     once "^1.3.1"
     simple-concat "^1.0.0"
 
-slash@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
-  integrity sha1-xB8vbDn8FtHNF61LXYlhFK5HDVU=
-
 solc@0.4.24:
   version "0.4.24"
   resolved "https://registry.yarnpkg.com/solc/-/solc-0.4.24.tgz#354f14b269b38cbaa82a47d1ff151723502b954e"
@@ -3634,24 +2187,6 @@ solc@0.4.24:
     semver "^5.3.0"
     yargs "^4.7.1"
 
-solc@^0.4.2:
-  version "0.4.25"
-  resolved "https://registry.yarnpkg.com/solc/-/solc-0.4.25.tgz#06b8321f7112d95b4b903639b1138a4d292f5faa"
-  integrity sha512-jU1YygRVy6zatgXrLY2rRm7HW1d7a8CkkEgNJwvH2VLpWhMFsMdWcJn6kUqZwcSz/Vm+w89dy7Z/aB5p6AFTrg==
-  dependencies:
-    fs-extra "^0.30.0"
-    memorystream "^0.3.1"
-    require-from-string "^1.1.0"
-    semver "^5.3.0"
-    yargs "^4.7.1"
-
-source-map-support@^0.4.15:
-  version "0.4.18"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.18.tgz#0286a6de8be42641338594e97ccea75f0a2c585f"
-  integrity sha512-try0/JqxPLF9nOjvSta7tVondkP5dwgyLDjVoyMDlmjugT2lRZ1OfsrYTkCd2hkDnJTKRbO/Rl3orm8vlsUzbA==
-  dependencies:
-    source-map "^0.5.6"
-
 source-map-support@^0.5.3:
   version "0.5.9"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
@@ -3660,11 +2195,6 @@ source-map-support@^0.5.3:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
 
-source-map@^0.5.6, source-map@^0.5.7:
-  version "0.5.7"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
-  integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
-
 source-map@^0.6.0:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
@@ -3736,20 +2266,6 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
-string.prototype.trim@~1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/string.prototype.trim/-/string.prototype.trim-1.1.2.tgz#d04de2c89e137f4d7d206f086b5ed2fae6be8cea"
-  integrity sha1-0E3iyJ4Tf019IG8Ia17S+ua+jOo=
-  dependencies:
-    define-properties "^1.1.2"
-    es-abstract "^1.5.0"
-    function-bind "^1.0.2"
-
-string_decoder@~0.10.x:
-  version "0.10.31"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
-  integrity sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=
-
 string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -3792,11 +2308,6 @@ supports-color@4.4.0:
   dependencies:
     has-flag "^2.0.0"
 
-supports-color@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
-  integrity sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
-
 swarm-js@0.1.37:
   version "0.1.37"
   resolved "https://registry.yarnpkg.com/swarm-js/-/swarm-js-0.1.37.tgz#27d485317a340bbeec40292af783cc10acfa4663"
@@ -3816,25 +2327,6 @@ swarm-js@0.1.37:
     tar.gz "^1.0.5"
     xhr-request-promise "^0.1.2"
 
-tape@^4.4.0, tape@^4.6.3, tape@^4.8.0:
-  version "4.9.1"
-  resolved "https://registry.yarnpkg.com/tape/-/tape-4.9.1.tgz#1173d7337e040c76fbf42ec86fcabedc9b3805c9"
-  integrity sha512-6fKIXknLpoe/Jp4rzHKFPpJUHDHDqn8jus99IfPnHIjyz78HYlefTGD3b5EkbQzuLfaEvmfPK3IolLgq2xT3kw==
-  dependencies:
-    deep-equal "~1.0.1"
-    defined "~1.0.0"
-    for-each "~0.3.3"
-    function-bind "~1.1.1"
-    glob "~7.1.2"
-    has "~1.0.3"
-    inherits "~2.0.3"
-    minimist "~1.2.0"
-    object-inspect "~1.6.0"
-    resolve "~1.7.1"
-    resumer "~0.0.0"
-    string.prototype.trim "~1.1.2"
-    through "~2.3.8"
-
 tar-stream@^1.5.2:
   version "1.6.2"
   resolved "https://registry.yarnpkg.com/tar-stream/-/tar-stream-1.6.2.tgz#8ea55dab37972253d9a9af90fdcd559ae435c555"
@@ -3882,15 +2374,7 @@ thenify-all@^1.0.0, thenify-all@^1.6.0:
   dependencies:
     any-promise "^1.0.0"
 
-through2@^2.0.3:
-  version "2.0.5"
-  resolved "https://registry.yarnpkg.com/through2/-/through2-2.0.5.tgz#01c1e39eb31d07cb7d03a96a70823260b23132cd"
-  integrity sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==
-  dependencies:
-    readable-stream "~2.3.6"
-    xtend "~4.0.1"
-
-through@^2.3.6, through@~2.3.4, through@~2.3.8:
+through@^2.3.6:
   version "2.3.8"
   resolved "http://registry.npmjs.org/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
   integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
@@ -3905,11 +2389,6 @@ to-buffer@^1.1.1:
   resolved "https://registry.yarnpkg.com/to-buffer/-/to-buffer-1.1.1.tgz#493bd48f62d7c43fcded313a03dcadb2e1213a80"
   integrity sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg==
 
-to-fast-properties@^1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
-  integrity sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=
-
 tough-cookie@~2.4.3:
   version "2.4.3"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.4.3.tgz#53f36da3f47783b0925afa06ff9f3b165280f781"
@@ -3918,16 +2397,6 @@ tough-cookie@~2.4.3:
     psl "^1.1.24"
     punycode "^1.4.1"
 
-treeify@^1.0.1:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/treeify/-/treeify-1.1.0.tgz#4e31c6a463accd0943879f30667c4fdaff411bb8"
-  integrity sha512-1m4RA7xVAJrSGrrXGs0L3YTwyvBs2S8PbRHaLZAkFw7JR8oIFwYtysxlBZhYIa7xSyiYJKZ3iGrrk55cGA3i9A==
-
-trim-right@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
-  integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
-
 trim@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/trim/-/trim-0.0.1.tgz#5858547f6b290757ee95cccc666fb50084c460dd"
@@ -3963,15 +2432,14 @@ truffle-error@^0.0.3:
   resolved "https://registry.yarnpkg.com/truffle-error/-/truffle-error-0.0.3.tgz#4bf55242e14deee1c7194932709182deff2c97ca"
   integrity sha1-S/VSQuFN7uHHGUkycJGC3v8sl8o=
 
-truffle-hdwallet-provider@0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/truffle-hdwallet-provider/-/truffle-hdwallet-provider-0.0.6.tgz#775c677693a94d83a515815d7fd7f0a73f00c3e9"
-  integrity sha512-vh1nCk9+COz9Z1BnDYjrZEc8Z4KCWeoThAX6U13SpHMuSL7gX40ZDWszlVmovPLEwHSJBh/OaFmaduKfeXT9rA==
+truffle-hdwallet-provider@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/truffle-hdwallet-provider/-/truffle-hdwallet-provider-1.0.2.tgz#eb9ce2955e3a1fb8677ed3ad4949dfd9df913d73"
+  integrity sha512-skxwZDG541Qf077aA7VDWn9qhgr9/DjmbFJWLVR/oRrlmOYcIiNXviuBIZ5tZkE7JuFxMzHagkLPOreeko9G+g==
   dependencies:
-    bip39 "^2.2.0"
-    ethereumjs-wallet "0.6.0"
-    web3 "^0.18.2"
-    web3-provider-engine "^14.0.5"
+    any-promise "^1.3.0"
+    bindings "^1.3.1"
+    websocket "^1.0.28"
 
 truffle@5.0.0-beta.0:
   version "5.0.0-beta.0"
@@ -4002,18 +2470,13 @@ type-is@~1.6.16:
     media-typer "0.3.0"
     mime-types "~2.1.18"
 
-typedarray-to-buffer@^3.1.2:
+typedarray-to-buffer@^3.1.2, typedarray-to-buffer@^3.1.5:
   version "3.1.5"
   resolved "https://registry.yarnpkg.com/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz#a97ee7a9ff42691b9f783ff1bc5112fe3fca9080"
   integrity sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==
   dependencies:
     is-typedarray "^1.0.0"
 
-typedarray@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
-  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
-
 ultron@~1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.1.1.tgz#9fe1536a10a664a65266a1e3ccf85fd36302bc9c"
@@ -4032,11 +2495,6 @@ underscore@1.8.3:
   resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.8.3.tgz#4f3fb53b106e6097fcf9cb4109f2a5e9bdfa5022"
   integrity sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI=
 
-unorm@^1.3.3:
-  version "1.4.1"
-  resolved "https://registry.yarnpkg.com/unorm/-/unorm-1.4.1.tgz#364200d5f13646ca8bcd44490271335614792300"
-  integrity sha1-NkIA1fE2RsqLzURJAnEzVhR5IwA=
-
 unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
@@ -4084,11 +2542,6 @@ uuid@2.0.1:
   resolved "http://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz#c2a30dedb3e535d72ccf82e343941a50ba8533ac"
   integrity sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w=
 
-uuid@^2.0.1:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.3.tgz#67e2e863797215530dff318e5bf9dcebfd47b21a"
-  integrity sha1-Z+LoY3lyFVMN/zGOW/nc6/1Hsho=
-
 uuid@^3.3.2:
   version "3.3.2"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
@@ -4283,57 +2736,6 @@ web3-net@1.0.0-beta.36:
     web3-core-method "1.0.0-beta.36"
     web3-utils "1.0.0-beta.36"
 
-web3-provider-engine@^13.3.2:
-  version "13.8.0"
-  resolved "https://registry.yarnpkg.com/web3-provider-engine/-/web3-provider-engine-13.8.0.tgz#4c7c1ad2af5f1fe10343b8a65495879a2f9c00df"
-  integrity sha512-fZXhX5VWwWpoFfrfocslyg6P7cN3YWPG/ASaevNfeO80R+nzgoPUBXcWQekSGSsNDkeRTis4aMmpmofYf1TNtQ==
-  dependencies:
-    async "^2.5.0"
-    clone "^2.0.0"
-    eth-block-tracker "^2.2.2"
-    eth-sig-util "^1.4.2"
-    ethereumjs-block "^1.2.2"
-    ethereumjs-tx "^1.2.0"
-    ethereumjs-util "^5.1.1"
-    ethereumjs-vm "^2.0.2"
-    fetch-ponyfill "^4.0.0"
-    json-rpc-error "^2.0.0"
-    json-stable-stringify "^1.0.1"
-    promise-to-callback "^1.0.0"
-    readable-stream "^2.2.9"
-    request "^2.67.0"
-    semaphore "^1.0.3"
-    solc "^0.4.2"
-    tape "^4.4.0"
-    xhr "^2.2.0"
-    xtend "^4.0.1"
-
-web3-provider-engine@^14.0.5:
-  version "14.1.0"
-  resolved "https://registry.yarnpkg.com/web3-provider-engine/-/web3-provider-engine-14.1.0.tgz#91590020f8b8c1b65846321310cbfdb039090fc6"
-  integrity sha512-vGZtqhSUzGTiMGhJXNnB/aRDlrPZLhLnBZ2NPArkZtr8XSrwg9m08tw4+PuWg5za0TJuoE/vuPQc501HddZZWw==
-  dependencies:
-    async "^2.5.0"
-    backoff "^2.5.0"
-    clone "^2.0.0"
-    cross-fetch "^2.1.0"
-    eth-block-tracker "^3.0.0"
-    eth-json-rpc-infura "^3.1.0"
-    eth-sig-util "^1.4.2"
-    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"
-
 web3-providers-http@1.0.0-beta.36:
   version "1.0.0-beta.36"
   resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.0.0-beta.36.tgz#c1937a2e64f8db7cd30f166794e37cf0fcca1131"
@@ -4407,16 +2809,15 @@ web3@1.0.0-beta.36, web3@^1.0.0-beta.36:
     web3-shh "1.0.0-beta.36"
     web3-utils "1.0.0-beta.36"
 
-web3@^0.18.2:
-  version "0.18.4"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-0.18.4.tgz#81ec1784145491f2eaa8955b31c06049e07c5e7d"
-  integrity sha1-gewXhBRUkfLqqJVbMcBgSeB8Xn0=
+websocket@^1.0.28:
+  version "1.0.28"
+  resolved "https://registry.yarnpkg.com/websocket/-/websocket-1.0.28.tgz#9e5f6fdc8a3fe01d4422647ef93abdd8d45a78d3"
+  integrity sha512-00y/20/80P7H4bCYkzuuvvfDvh+dgtXi5kzDf3UcZwN6boTYaKvsrtZ5lIYm1Gsg48siMErd9M4zjSYfYFHTrA==
   dependencies:
-    bignumber.js "git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2"
-    crypto-js "^3.1.4"
-    utf8 "^2.1.1"
-    xhr2 "*"
-    xmlhttprequest "*"
+    debug "^2.2.0"
+    nan "^2.11.0"
+    typedarray-to-buffer "^3.1.5"
+    yaeti "^0.0.6"
 
 "websocket@git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible":
   version "1.0.26"
@@ -4427,11 +2828,6 @@ web3@^0.18.2:
     typedarray-to-buffer "^3.1.2"
     yaeti "^0.0.6"
 
-whatwg-fetch@2.0.4:
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz#dde6a5df315f9d39991aa17621853d720b85566f"
-  integrity sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng==
-
 which-module@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"
@@ -4464,13 +2860,6 @@ ws@^3.0.0:
     safe-buffer "~5.1.0"
     ultron "~1.1.0"
 
-ws@^5.1.1:
-  version "5.2.2"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-5.2.2.tgz#dffef14866b8e8dc9133582514d1befaf96e980f"
-  integrity sha512-jaHFD6PFv6UgoIVda6qZllptQsMlDEJkTQcybzzXDYM1XO9Y8em691FGMPmM46WGyLU4z9KMgQN+qrux/nhlHA==
-  dependencies:
-    async-limiter "~1.0.0"
-
 xhr-request-promise@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/xhr-request-promise/-/xhr-request-promise-0.1.2.tgz#343c44d1ee7726b8648069682d0f840c83b4261d"
@@ -4503,7 +2892,7 @@ xhr2@*:
   resolved "https://registry.yarnpkg.com/xhr2/-/xhr2-0.1.4.tgz#7f87658847716db5026323812f818cadab387a5f"
   integrity sha1-f4dliEdxbbUCYyOBL4GMras4el8=
 
-xhr@^2.0.4, xhr@^2.2.0, xhr@^2.3.3:
+xhr@^2.0.4, xhr@^2.3.3:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/xhr/-/xhr-2.5.0.tgz#bed8d1676d5ca36108667692b74b316c496e49dd"
   integrity sha512-4nlO/14t3BNUZRXIXfXe+3N6w3s1KoxcJUUURctd64BLRe67E4gRwp4PjywtDY72fXpZ1y6Ch0VZQRY/gMPzzQ==
@@ -4518,18 +2907,11 @@ xmlhttprequest@*, xmlhttprequest@1.8.0:
   resolved "https://registry.yarnpkg.com/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz#67fe075c5c24fef39f9d65f5f7b7fe75171968fc"
   integrity sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw=
 
-xtend@^4.0.0, xtend@^4.0.1, xtend@~4.0.0, xtend@~4.0.1:
+xtend@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
   integrity sha1-pcbVMr5lbiPbgg77lDofBJmNY68=
 
-xtend@~2.1.1:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/xtend/-/xtend-2.1.2.tgz#6efecc2a4dad8e6962c4901b337ce7ba87b5d28b"
-  integrity sha1-bv7MKk2tjmlixJAbM3znuoe10os=
-  dependencies:
-    object-keys "~0.4.0"
-
 y18n@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"