diff --git a/yarn.lock b/yarn.lock
index c93751afc..4be3a3684 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -76,7 +76,7 @@ accepts@1.3.3:
     mime-types "~2.1.11"
     negotiator "0.6.1"
 
-accepts@~1.3.3:
+accepts@~1.3.3, accepts@~1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.4.tgz#86246758c7dd6d21a6474ff084a4740ec05eb21f"
   dependencies:
@@ -397,6 +397,12 @@ async-eventemitter@^0.2.2:
   dependencies:
     async "^2.4.0"
 
+"async-eventemitter@github:ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c":
+  version "0.2.3"
+  resolved "https://codeload.github.com/ahultgren/async-eventemitter/tar.gz/fa06e39e56786ba541c180061dbf2c0a5bbf951c"
+  dependencies:
+    async "^2.4.0"
+
 async-foreach@^0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/async-foreach/-/async-foreach-0.1.3.tgz#36121f845c0578172de419a97dbeb1d16ec34542"
@@ -1345,7 +1351,7 @@ bindings@^1.2.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.3.0.tgz#b346f6ecf6a95f5a815c5839fc7cdb22502f1ed7"
 
-bip39@^2.2.0:
+bip39@^2.2.0, bip39@^2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/bip39/-/bip39-2.4.0.tgz#a0b8adbf163f53495f00f05d9ede7c25369ccf13"
   dependencies:
@@ -1397,10 +1403,25 @@ bn.js@4.11.6:
   version "4.11.6"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
 
-bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.11.3, bn.js@^4.11.7, 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@^4.10.0, bn.js@^4.11.3, bn.js@^4.11.7, bn.js@^4.4.0, bn.js@^4.8.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
 
+body-parser@1.18.2:
+  version "1.18.2"
+  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.18.2.tgz#87678a19d84b47d859b83199bd59bce222b10454"
+  dependencies:
+    bytes "3.0.0"
+    content-type "~1.0.4"
+    debug "2.6.9"
+    depd "~1.1.1"
+    http-errors "~1.6.2"
+    iconv-lite "0.4.19"
+    on-finished "~2.3.0"
+    qs "6.5.1"
+    raw-body "2.3.2"
+    type-is "~1.6.15"
+
 body-parser@^1.16.1:
   version "1.18.1"
   resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.18.1.tgz#9c1629370bcfd42917f30641a2dcbe2ec50d4c26"
@@ -1701,21 +1722,6 @@ buffer@^5.0.2:
     base64-js "^1.0.2"
     ieee754 "^1.1.4"
 
-build@^0.1.4:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/build/-/build-0.1.4.tgz#707fe026ffceddcacbfdcdf356eafda64f151046"
-  dependencies:
-    cssmin "0.3.x"
-    jsmin "1.x"
-    jxLoader "*"
-    moo-server "*"
-    promised-io "*"
-    timespan "2.x"
-    uglify-js "1.x"
-    walker "1.x"
-    winston "*"
-    wrench "1.3.x"
-
 builtin-modules@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/builtin-modules/-/builtin-modules-1.1.1.tgz#270f076c5a72c02f5b65a47df94c5fe3a278892f"
@@ -2431,10 +2437,6 @@ cssauron@^1.1.0:
   dependencies:
     through X.X.X
 
-cssmin@0.3.x:
-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/cssmin/-/cssmin-0.3.2.tgz#ddce4c547b510ae0d594a8f1fbf8aaf8e2c5c00d"
-
 cssom@0.3.x, "cssom@>= 0.3.2 < 0.4.0":
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.2.tgz#b8036170c79f07a90ff2f16e22284027a243848b"
@@ -2527,6 +2529,12 @@ debug@2.6.8, debug@^2.1.0, debug@^2.2.0, debug@^2.6.0, debug@^2.6.3, debug@^2.6.
   dependencies:
     ms "2.0.0"
 
+debug@2.6.9:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  dependencies:
+    ms "2.0.0"
+
 debug@^3.0.0, debug@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.0.1.tgz#0564c612b521dc92d9f2988f0549e34f9c98db64"
@@ -3341,6 +3349,10 @@ etag@~1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.0.tgz#6f631aef336d6c46362b51764044ce216be3c051"
 
+etag@~1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
+
 eth-bin-to-ops@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/eth-bin-to-ops/-/eth-bin-to-ops-1.0.1.tgz#4d2703b9878825bc38c6259910e90b4db005c7de"
@@ -3359,7 +3371,7 @@ eth-block-tracker@^1.0.7:
     pify "^2.3.0"
     tape "^4.6.3"
 
-eth-block-tracker@^2.0.1, eth-block-tracker@^2.1.2:
+eth-block-tracker@^2.1.2:
   version "2.1.3"
   resolved "https://registry.yarnpkg.com/eth-block-tracker/-/eth-block-tracker-2.1.3.tgz#ef24ab415f18445bd5c0ef49b9ac248f847e34f9"
   dependencies:
@@ -3370,6 +3382,17 @@ eth-block-tracker@^2.0.1, eth-block-tracker@^2.1.2:
     pify "^2.3.0"
     tape "^4.6.3"
 
+eth-block-tracker@^2.2.0, eth-block-tracker@^2.2.2:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/eth-block-tracker/-/eth-block-tracker-2.2.2.tgz#b3d72cd82ba5ee37471d22bac4f56387ee4137cf"
+  dependencies:
+    async-eventemitter ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c
+    babelify "^7.3.0"
+    eth-query "^2.1.0"
+    ethjs-util "^0.1.3"
+    pify "^2.3.0"
+    tape "^4.6.3"
+
 eth-contract-metadata@^1.1.5:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/eth-contract-metadata/-/eth-contract-metadata-1.1.5.tgz#301f51b0460b8dd044997dc05870751fb7f4cfcb"
@@ -3381,7 +3404,7 @@ eth-ens-namehash@^1.0.2:
     idna-uts46 "^1.0.1"
     js-sha3 "^0.5.7"
 
-eth-hd-keyring@^1.1.1:
+eth-hd-keyring@^1.1.1, eth-hd-keyring@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/eth-hd-keyring/-/eth-hd-keyring-1.2.0.tgz#40bcc7ea877ef5c746f54c0c87a6b39ceb5edde3"
   dependencies:
@@ -3391,9 +3414,9 @@ eth-hd-keyring@^1.1.1:
     ethereumjs-wallet "^0.6.0"
     events "^1.1.1"
 
-eth-json-rpc-filters@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/eth-json-rpc-filters/-/eth-json-rpc-filters-1.1.0.tgz#fb2cb1d45c825f40d92c29ece5ff91a296c8f9a1"
+eth-json-rpc-filters@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/eth-json-rpc-filters/-/eth-json-rpc-filters-1.2.1.tgz#96e1714272a0f7d6d8efef7af8d764988f73ffc1"
   dependencies:
     await-semaphore "^0.1.1"
     eth-json-rpc-middleware "^1.0.0"
@@ -3414,6 +3437,21 @@ eth-json-rpc-middleware@^1.0.0, eth-json-rpc-middleware@^1.2.7:
     promise-to-callback "^1.0.0"
     tape "^4.6.3"
 
+eth-keyring-controller@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/eth-keyring-controller/-/eth-keyring-controller-2.1.0.tgz#46b2c1597d9471aab5e4f792dc109084ed196f2d"
+  dependencies:
+    bip39 "^2.4.0"
+    bluebird "^3.5.0"
+    browser-passworder "^2.0.3"
+    eth-hd-keyring "^1.2.0"
+    eth-sig-util "^1.2.2"
+    eth-simple-keyring "^1.1.1"
+    ethereumjs-util "^5.1.2"
+    loglevel "^1.5.0"
+    obs-store "^2.4.1"
+    promise-filter "^1.1.0"
+
 eth-phishing-detect@^1.1.4:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/eth-phishing-detect/-/eth-phishing-detect-1.1.11.tgz#e29c38b84abed3d41df4131c56d6a41308c3e56d"
@@ -3427,12 +3465,19 @@ eth-query@^2.1.0, eth-query@^2.1.2:
     json-rpc-random-id "^1.0.0"
     xtend "^4.0.1"
 
-eth-sig-util@^1.1.0, eth-sig-util@^1.2.1, eth-sig-util@^1.2.2:
+eth-sig-util@^1.1.0, eth-sig-util@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-1.2.2.tgz#7e982f5f8d94e79027d8c69e6006cdbd2f57942f"
   dependencies:
     ethereumjs-util "^5.1.1"
 
+eth-sig-util@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-1.3.0.tgz#14c1c02367a4264dbfeae611b4dc7f8d9d6ee4ba"
+  dependencies:
+    ethereumjs-abi "git+https://github.com/ethereumjs/ethereumjs-abi.git"
+    ethereumjs-util "^5.1.1"
+
 eth-simple-keyring@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/eth-simple-keyring/-/eth-simple-keyring-1.1.1.tgz#6dd75d7cc6edea7c788cf19ef9431c830cd961ae"
@@ -3442,9 +3487,9 @@ eth-simple-keyring@^1.1.1:
     ethereumjs-wallet "^0.6.0"
     events "^1.1.1"
 
-eth-token-tracker@^1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/eth-token-tracker/-/eth-token-tracker-1.1.3.tgz#c9951a214a9a30bdfc251133d1ba920743a59848"
+eth-token-tracker@^1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/eth-token-tracker/-/eth-token-tracker-1.1.4.tgz#29ff2457d66bfa3b8ee490e83ff40fd0cf2cec41"
   dependencies:
     deep-equal "^1.0.1"
     eth-block-tracker "^1.0.7"
@@ -3465,6 +3510,13 @@ ethereum-ens-network-map@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/ethereum-ens-network-map/-/ethereum-ens-network-map-1.0.0.tgz#43cd7669ce950a789e151001118d4d65f210eeb7"
 
+"ethereumjs-abi@git+https://github.com/ethereumjs/ethereumjs-abi.git":
+  version "0.6.4"
+  resolved "git+https://github.com/ethereumjs/ethereumjs-abi.git#ee6ded67235a98f3ef4ae2a338aee70a9f68fe20"
+  dependencies:
+    bn.js "^4.10.0"
+    ethereumjs-util "^4.3.0"
+
 ethereumjs-account@^2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/ethereumjs-account/-/ethereumjs-account-2.0.4.tgz#f8c30231bcb707f4514d8a052c1f9da103624d47"
@@ -3489,7 +3541,7 @@ ethereumjs-tx@^1.2.0, ethereumjs-tx@^1.2.2, ethereumjs-tx@^1.3.0, ethereumjs-tx@
     ethereum-common "^0.0.18"
     ethereumjs-util "^5.0.0"
 
-ethereumjs-util@4.5.0, ethereumjs-util@^4.0.0, ethereumjs-util@^4.0.1, ethereumjs-util@^4.4.0:
+ethereumjs-util@4.5.0, ethereumjs-util@^4.0.0, ethereumjs-util@^4.0.1, ethereumjs-util@^4.3.0, ethereumjs-util@^4.4.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz#3e9428b317eebda3d7260d854fddda954b1f1bc6"
   dependencies:
@@ -3499,7 +3551,7 @@ ethereumjs-util@4.5.0, ethereumjs-util@^4.0.0, ethereumjs-util@^4.0.1, ethereumj
     rlp "^2.0.0"
     secp256k1 "^3.0.1"
 
-ethereumjs-util@^5.0.0, ethereumjs-util@^5.1.1:
+ethereumjs-util@^5.0.0, ethereumjs-util@^5.1.1, ethereumjs-util@^5.1.2:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-5.1.2.tgz#25ba0215cbb4c2f0b108a6f96af2a2e62e45921f"
   dependencies:
@@ -3767,7 +3819,7 @@ expand-tilde@^2.0.2:
   dependencies:
     homedir-polyfill "^1.0.1"
 
-express@^4.10.7, express@^4.14.0:
+express@^4.10.7:
   version "4.15.4"
   resolved "https://registry.yarnpkg.com/express/-/express-4.15.4.tgz#032e2253489cf8fce02666beca3d11ed7a2daed1"
   dependencies:
@@ -3800,6 +3852,41 @@ express@^4.10.7, express@^4.14.0:
     utils-merge "1.0.0"
     vary "~1.1.1"
 
+express@^4.15.5:
+  version "4.16.0"
+  resolved "https://registry.yarnpkg.com/express/-/express-4.16.0.tgz#b519638e4eb58e7178c81b498ef22f798cb2e255"
+  dependencies:
+    accepts "~1.3.4"
+    array-flatten "1.1.1"
+    body-parser "1.18.2"
+    content-disposition "0.5.2"
+    content-type "~1.0.4"
+    cookie "0.3.1"
+    cookie-signature "1.0.6"
+    debug "2.6.9"
+    depd "~1.1.1"
+    encodeurl "~1.0.1"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    finalhandler "1.1.0"
+    fresh "0.5.2"
+    merge-descriptors "1.0.1"
+    methods "~1.1.2"
+    on-finished "~2.3.0"
+    parseurl "~1.3.2"
+    path-to-regexp "0.1.7"
+    proxy-addr "~2.0.2"
+    qs "6.5.1"
+    range-parser "~1.2.0"
+    safe-buffer "5.1.1"
+    send "0.16.0"
+    serve-static "1.13.0"
+    setprototypeof "1.1.0"
+    statuses "~1.3.1"
+    type-is "~1.6.15"
+    utils-merge "1.0.1"
+    vary "~1.1.2"
+
 extend-shallow@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-2.0.1.tgz#51af7d614ad9a9f610ea1bafbb989d6b1c56890f"
@@ -3953,6 +4040,18 @@ finalhandler@1.0.4, finalhandler@~1.0.4:
     statuses "~1.3.1"
     unpipe "~1.0.0"
 
+finalhandler@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/finalhandler/-/finalhandler-1.1.0.tgz#ce0b6855b45853e791b2fcc680046d88253dd7f5"
+  dependencies:
+    debug "2.6.9"
+    encodeurl "~1.0.1"
+    escape-html "~1.0.3"
+    on-finished "~2.3.0"
+    parseurl "~1.3.2"
+    statuses "~1.3.1"
+    unpipe "~1.0.0"
+
 find-cache-dir@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/find-cache-dir/-/find-cache-dir-0.1.1.tgz#c8defae57c8a52a8a784f9e31c57c742e993a0b9"
@@ -4116,10 +4215,18 @@ forwarded@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.1.1.tgz#8a4e30c640b05395399a3549c730257728048961"
 
+forwarded@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.1.2.tgz#98c23dab1175657b8c0573e8ceccd91b0ff18c84"
+
 fresh@0.5.0:
   version "0.5.0"
   resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.5.0.tgz#f474ca5e6a9246d6fd8e0953cfa9b9c805afa78e"
 
+fresh@0.5.2:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.5.2.tgz#3d8cadd90d976569fa835ab1f8e4b23a105605a7"
+
 from2@^2.1.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/from2/-/from2-2.3.0.tgz#8bfb5502bde4a4d36cfdeea007fcca21d7e382af"
@@ -5070,6 +5177,10 @@ ipaddr.js@1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.4.0.tgz#296aca878a821816e5b85d0a285a99bcff4582f0"
 
+ipaddr.js@1.5.2:
+  version "1.5.2"
+  resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.5.2.tgz#d4b505bde9946987ccf0fc58d9010ff9607e3fa0"
+
 irregular-plurals@^1.0.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/irregular-plurals/-/irregular-plurals-1.3.0.tgz#7af06931bdf74be33dcf585a13e06fccc16caecf"
@@ -5450,10 +5561,6 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
-js-yaml@0.3.x:
-  version "0.3.7"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-0.3.7.tgz#d739d8ee86461e54b354d6a7d7d1f2ad9a167f62"
-
 js-yaml@3.6.1:
   version "3.6.1"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.6.1.tgz#6e5fe67d8b205ce4d22fad05b7781e8dadcc4b30"
@@ -5525,10 +5632,6 @@ jshint-stylish@~2.2.1:
     string-length "^1.0.0"
     text-table "^0.2.0"
 
-jsmin@1.x:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/jsmin/-/jsmin-1.0.1.tgz#e7bd0dcd6496c3bf4863235bf461a3d98aa3b98c"
-
 json-loader@^0.5.4:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/json-loader/-/json-loader-0.5.7.tgz#dca14a70235ff82f0ac9a3abeb60d337a365185d"
@@ -5541,6 +5644,15 @@ json-rpc-engine@^3.0.1, json-rpc-engine@^3.1.0:
     babel-preset-env "^1.3.2"
     babelify "^7.3.0"
 
+json-rpc-engine@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-3.2.0.tgz#d34dff106c8339c337a894da801f73b1f77b1bc8"
+  dependencies:
+    async "^2.0.1"
+    babel-preset-env "^1.3.2"
+    babelify "^7.3.0"
+    json-rpc-error "^2.0.0"
+
 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"
@@ -5556,6 +5668,16 @@ json-rpc-middleware-stream@^1.0.0:
     json-rpc-engine "^3.0.1"
     readable-stream "^2.3.3"
 
+json-rpc-middleware-stream@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-rpc-middleware-stream/-/json-rpc-middleware-stream-1.0.1.tgz#c9b8a005c80af32e6df8bb88e6bdd1300484a4ed"
+  dependencies:
+    end-of-stream "^1.4.0"
+    eth-block-tracker "^2.1.2"
+    ethjs-query "^0.2.9"
+    json-rpc-engine "^3.0.1"
+    readable-stream "^2.3.3"
+
 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"
@@ -5644,15 +5766,6 @@ just-extend@^1.1.22:
   version "1.1.22"
   resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-1.1.22.tgz#3330af756cab6a542700c64b2e4e4aa062d52fff"
 
-jxLoader@*:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/jxLoader/-/jxLoader-0.1.1.tgz#0134ea5144e533b594fc1ff25ff194e235c53ecd"
-  dependencies:
-    js-yaml "0.3.x"
-    moo-server "1.3.x"
-    promised-io "*"
-    walker "1.x"
-
 karma-chrome-launcher@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/karma-chrome-launcher/-/karma-chrome-launcher-2.2.0.tgz#cf1b9d07136cc18fe239327d24654c3dbc368acf"
@@ -6194,7 +6307,7 @@ log4js@^0.6.31:
     readable-stream "~1.0.2"
     semver "~4.3.3"
 
-loglevel@^1.4.1:
+loglevel@^1.4.1, loglevel@^1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.5.0.tgz#3863984a2c326b986fbb965f378758a6dc8a4324"
 
@@ -6256,12 +6369,6 @@ make-iterator@^1.0.0:
   dependencies:
     kind-of "^3.1.0"
 
-makeerror@1.0.x:
-  version "1.0.11"
-  resolved "https://registry.yarnpkg.com/makeerror/-/makeerror-1.0.11.tgz#e01a5c9109f2af79660e4e8b9587790184f5a96c"
-  dependencies:
-    tmpl "1.0.x"
-
 map-async@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/map-async/-/map-async-0.1.1.tgz#c897c0449f85864c74b5a3f196edb42156431745"
@@ -6404,6 +6511,18 @@ mersenne-twister@^1.0.1:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/mersenne-twister/-/mersenne-twister-1.1.0.tgz#f916618ee43d7179efcf641bec4531eb9670978a"
 
+metamascara@^1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/metamascara/-/metamascara-1.3.1.tgz#a84d6f20ef4ba401ce44eba120857ee1d680747b"
+  dependencies:
+    iframe "^1.0.0"
+    iframe-stream "^3.0.0"
+    json-rpc-engine "^3.1.0"
+    json-rpc-middleware-stream "^1.0.0"
+    obj-multiplex "^1.0.0"
+    obs-store "^2.4.1"
+    pump "^1.0.2"
+
 metamask-logo@^2.1.2:
   version "2.1.3"
   resolved "https://registry.yarnpkg.com/metamask-logo/-/metamask-logo-2.1.3.tgz#175ce57ae50c7344b3b1dc32d2fd0b08e3978fd0"
@@ -6454,6 +6573,10 @@ mime@1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.3.4.tgz#115f9e3b6b3daf2959983cb38f149a2d40eb5d53"
 
+mime@1.4.1:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.1.tgz#121f9ebc49e3766f311a76e1fa1c8003c4b03aa6"
+
 mime@^1.3.4:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.0.tgz#69e9e0db51d44f2a3b56e48b7817d7d137f1a343"
@@ -6596,10 +6719,6 @@ module-deps@^4.0.8:
     through2 "^2.0.0"
     xtend "^4.0.0"
 
-moo-server@*, moo-server@1.3.x:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/moo-server/-/moo-server-1.3.0.tgz#5dc79569565a10d6efed5439491e69d2392e58f1"
-
 ms@0.7.1:
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.1.tgz#9cd13c03adbff25b65effde7ce864ee952017098"
@@ -6681,7 +6800,7 @@ next-tick@1:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
 
-nise@^1.0.1:
+nise@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/nise/-/nise-1.1.0.tgz#37e41b9bf0041ccb83d1bf03e79440bbc0db10ad"
   dependencies:
@@ -7254,7 +7373,7 @@ parseuri@0.0.5:
   dependencies:
     better-assert "~1.0.0"
 
-parseurl@~1.3.0, parseurl@~1.3.1:
+parseurl@~1.3.0, parseurl@~1.3.1, parseurl@~1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
 
@@ -7624,10 +7743,6 @@ promise@^8.0.1:
   dependencies:
     asap "~2.0.3"
 
-promised-io@*:
-  version "0.3.5"
-  resolved "https://registry.yarnpkg.com/promised-io/-/promised-io-0.3.5.tgz#4ad217bb3658bcaae9946b17a8668ecd851e1356"
-
 prompt@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/prompt/-/prompt-1.0.0.tgz#8e57123c396ab988897fb327fd3aedc3e735e4fe"
@@ -7661,6 +7776,13 @@ proxy-addr@~1.1.5:
     forwarded "~0.1.0"
     ipaddr.js "1.4.0"
 
+proxy-addr@~2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.2.tgz#6571504f47bb988ec8180253f85dd7e14952bdec"
+  dependencies:
+    forwarded "~0.1.2"
+    ipaddr.js "1.5.2"
+
 prr@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/prr/-/prr-0.0.0.tgz#1a84b85908325501411853d0081ee3fa86e2926a"
@@ -8217,14 +8339,14 @@ request-promise-native@^1.0.3:
     stealthy-require "^1.1.0"
     tough-cookie ">=2.3.0"
 
-request-promise@^4.1.1:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/request-promise/-/request-promise-4.2.1.tgz#7eec56c89317a822cbfea99b039ce543c2e15f67"
+request-promise@^4.2.1:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/request-promise/-/request-promise-4.2.2.tgz#d1ea46d654a6ee4f8ee6a4fea1018c22911904b4"
   dependencies:
     bluebird "^3.5.0"
     request-promise-core "1.1.1"
     stealthy-require "^1.1.0"
-    tough-cookie ">=2.3.0"
+    tough-cookie ">=2.3.3"
 
 request@2, request@^2.67.0, request@^2.79.0, request@^2.81.0:
   version "2.81.0"
@@ -8398,7 +8520,7 @@ rx-lite@*, rx-lite@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-4.0.8.tgz#0b1e11af8bc44836f04a6407e92da42467b79444"
 
-safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
@@ -8519,6 +8641,24 @@ send@0.15.4:
     range-parser "~1.2.0"
     statuses "~1.3.1"
 
+send@0.16.0:
+  version "0.16.0"
+  resolved "https://registry.yarnpkg.com/send/-/send-0.16.0.tgz#16338dbb9a2ede4ad57b48420ec3b82d8e80a57b"
+  dependencies:
+    debug "2.6.9"
+    depd "~1.1.1"
+    destroy "~1.0.4"
+    encodeurl "~1.0.1"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    fresh "0.5.2"
+    http-errors "~1.6.2"
+    mime "1.4.1"
+    ms "2.0.0"
+    on-finished "~2.3.0"
+    range-parser "~1.2.0"
+    statuses "~1.3.1"
+
 serve-static@1.12.4:
   version "1.12.4"
   resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.12.4.tgz#9b6aa98eeb7253c4eedc4c1f6fdbca609901a961"
@@ -8528,6 +8668,15 @@ serve-static@1.12.4:
     parseurl "~1.3.1"
     send "0.15.4"
 
+serve-static@1.13.0:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.13.0.tgz#810c91db800e94ba287eae6b4e06caab9fdc16f1"
+  dependencies:
+    encodeurl "~1.0.1"
+    escape-html "~1.0.3"
+    parseurl "~1.3.2"
+    send "0.16.0"
+
 set-blocking@^2.0.0, set-blocking@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
@@ -8544,6 +8693,10 @@ setprototypeof@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.0.3.tgz#66567e37043eeb4f04d91bd658c0cbefb55b8e04"
 
+setprototypeof@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.0.tgz#d0bd85536887b6fe7c0d818cb962d9d91c54e656"
+
 sha.js@^2.4.0, sha.js@^2.4.8, sha.js@~2.4.4:
   version "2.4.8"
   resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.8.tgz#37068c2c476b6baf402d14a49c67f597921f634f"
@@ -8606,17 +8759,16 @@ simple-get@^1.4.2:
     unzip-response "^1.0.0"
     xtend "^4.0.0"
 
-sinon@^3.2.0:
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-3.3.0.tgz#9132111b4bbe13c749c2848210864250165069b1"
+sinon@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.0.0.tgz#a54a5f0237aa1dd2215e5e81c89b42b50c4fdb6b"
   dependencies:
-    build "^0.1.4"
     diff "^3.1.0"
     formatio "1.2.0"
     lodash.get "^4.4.2"
     lolex "^2.1.2"
     native-promise-only "^0.8.1"
-    nise "^1.0.1"
+    nise "^1.1.0"
     path-to-regexp "^1.7.0"
     samsam "^1.1.3"
     text-encoding "0.6.4"
@@ -9542,10 +9694,6 @@ timers-ext@^0.1.2:
     es5-ext "~0.10.14"
     next-tick "1"
 
-timespan@2.x:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/timespan/-/timespan-2.3.0.tgz#4902ce040bd13d845c8f59b27e9d59bad6f39929"
-
 tmp@0.0.31, tmp@^0.0.31:
   version "0.0.31"
   resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.31.tgz#8f38ab9438e17315e5dbd8b3657e8bfb277ae4a7"
@@ -9558,10 +9706,6 @@ tmp@0.0.x:
   dependencies:
     os-tmpdir "~1.0.2"
 
-tmpl@1.0.x:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"
-
 to-absolute-glob@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/to-absolute-glob/-/to-absolute-glob-0.1.1.tgz#1cdfa472a9ef50c239ee66999b662ca0eb39937f"
@@ -9598,6 +9742,12 @@ tough-cookie@>=2.3.0, tough-cookie@^2.3.2, tough-cookie@~2.3.0:
   dependencies:
     punycode "^1.4.1"
 
+tough-cookie@>=2.3.3:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.3.tgz#0b618a5565b6dea90bf3425d04d55edc475a7561"
+  dependencies:
+    punycode "^1.4.1"
+
 tr46@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/tr46/-/tr46-1.0.1.tgz#a8b13fd6bfd2489519674ccde55ba3693b706d09"
@@ -9697,10 +9847,6 @@ uglify-es@^3.0.15:
     commander "~2.11.0"
     source-map "~0.5.1"
 
-uglify-js@1.x:
-  version "1.3.5"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-1.3.5.tgz#4b5bfff9186effbaa888e4c9e94bd9fc4c94929d"
-
 uglify-js@^2.6, uglify-js@^2.8.27:
   version "2.8.29"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.8.29.tgz#29c5733148057bb4e1f75df35b7a9cb72e6a59dd"
@@ -9836,6 +9982,10 @@ utils-merge@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.0.tgz#0294fb922bb9375153541c4f7096231f287c8af8"
 
+utils-merge@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
+
 uuid@^2.0.1:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.3.tgz#67e2e863797215530dff318e5bf9dcebfd47b21a"
@@ -9873,6 +10023,10 @@ vary@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.1.tgz#67535ebb694c1d52257457984665323f587e8d37"
 
+vary@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
+
 verror@1.10.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"
@@ -9971,12 +10125,6 @@ vreme@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/vreme/-/vreme-3.0.2.tgz#4721376b449457fefde8a849d3340933b90b5686"
 
-walker@1.x:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/walker/-/walker-1.0.7.tgz#2f7f9b8fd10d677262b18a884e28d19618e028fb"
-  dependencies:
-    makeerror "1.0.x"
-
 warning@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/warning/-/warning-3.0.0.tgz#32e5377cb572de4ab04753bdf8821c01ed605b7c"
@@ -10010,14 +10158,14 @@ weak@^1.0.0:
     bindings "^1.2.1"
     nan "^2.0.5"
 
-web3-provider-engine@^13.2.9:
-  version "13.2.9"
-  resolved "https://registry.yarnpkg.com/web3-provider-engine/-/web3-provider-engine-13.2.9.tgz#1db7d6e1df4665c3e63f972c4d67087427200ed4"
+web3-provider-engine@^13.2.12:
+  version "13.3.0"
+  resolved "https://registry.yarnpkg.com/web3-provider-engine/-/web3-provider-engine-13.3.0.tgz#77c07b9ca2c529c48ad8fdfbb9d8ef9c3637d37e"
   dependencies:
     async "^2.5.0"
     clone "^2.0.0"
-    eth-block-tracker "^2.0.1"
-    eth-sig-util "^1.2.1"
+    eth-block-tracker "^2.2.2"
+    eth-sig-util "^1.3.0"
     ethereumjs-block "^1.2.2"
     ethereumjs-tx "^1.2.0"
     ethereumjs-util "^5.1.1"
@@ -10162,17 +10310,6 @@ window-size@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.2.0.tgz#b4315bb4214a3d7058ebeee892e13fa24d98b075"
 
-winston@*:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/winston/-/winston-2.3.1.tgz#0b48420d978c01804cf0230b648861598225a119"
-  dependencies:
-    async "~1.0.0"
-    colors "1.0.x"
-    cycle "1.0.x"
-    eyes "0.1.x"
-    isstream "0.1.x"
-    stack-trace "0.0.x"
-
 winston@2.1.x:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/winston/-/winston-2.1.1.tgz#3c9349d196207fd1bdff9d4bc43ef72510e3a12e"
@@ -10215,10 +10352,6 @@ wreck@^6.3.0:
     boom "2.x.x"
     hoek "2.x.x"
 
-wrench@1.3.x:
-  version "1.3.9"
-  resolved "https://registry.yarnpkg.com/wrench/-/wrench-1.3.9.tgz#6f13ec35145317eb292ca5f6531391b244111411"
-
 write-file-atomic@^1.1.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-1.3.4.tgz#f807a4f0b1d9e913ae7a48112e6cc3af1991b45f"