diff --git a/package.json b/package.json
index 38ad33cb1..a6ca13a97 100644
--- a/package.json
+++ b/package.json
@@ -27,8 +27,8 @@
     "@resolver-engine/imports": "^0.3.3",
     "@resolver-engine/imports-fs": "^0.3.3",
     "ethers": "^4.0.0",
-    "ganache-core": "2.5.6-beta.0",
-    "solc": "^0.5.1"
+    "ganache-core": "^2.5.7",
+    "solc": "0.5.1"
   },
   "resolutions": {
     "web3": "1.0.0-beta.35"
@@ -39,18 +39,18 @@
     "@types/chai-string": "^1.4.1",
     "@types/fs-extra": "^5.0.4",
     "@types/ganache-core": "^2.1.2",
-    "@types/mocha": "^5.2.5",
-    "@types/sinon": "^7.0.3",
+    "@types/mocha": "^5.2.7",
+    "@types/sinon": "^7.0.13",
     "@types/sinon-chai": "^3.2.2",
-    "chai": "^4.1.2",
+    "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "chai-string": "~1.4.0",
+    "chai-string": "^1.5.0",
     "fs-extra": "^7.0.1",
-    "mocha": "^5.1.1",
+    "mocha": "^6.1.4",
     "openzeppelin-solidity": "^2.1.1",
     "rimraf": "^2.6.3",
-    "sinon": "^6.1.5",
-    "sinon-chai": "^3.2.0",
+    "sinon": "^7.3.2",
+    "sinon-chai": "^3.3.0",
     "solium": "^1.1.8",
     "ts-node": "^7.0.1",
     "tslint": "^5.12.1",
diff --git a/test/matchers/contracts/events.sol b/test/matchers/contracts/events.sol
index dc8d839d0..cf78f8d9f 100644
--- a/test/matchers/contracts/events.sol
+++ b/test/matchers/contracts/events.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.5.1;
+pragma solidity ^0.5.0;
 
 
 contract Events {
diff --git a/test/matchers/contracts/matchers.sol b/test/matchers/contracts/matchers.sol
index 53e1b7257..650ea38d1 100644
--- a/test/matchers/contracts/matchers.sol
+++ b/test/matchers/contracts/matchers.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.5.1;
+pragma solidity ^0.5.0;
 
 
 contract Matchers {
diff --git a/yarn.lock b/yarn.lock
index a5fa595c0..0b19e2e56 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -39,27 +39,40 @@
     path-browserify "^1.0.0"
     url "^0.11.0"
 
+"@sinonjs/commons@^1", "@sinonjs/commons@^1.4.0":
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.4.0.tgz#7b3ec2d96af481d7a0321252e7b1c94724ec5a78"
+  integrity sha512-9jHK3YF/8HtJ9wCAbG+j8cD0i0+ATS9A7gXFqS36TblLPNy6rEEc+SB0imo91eCboGaBYGV/MT1/br/J+EE7Tw==
+  dependencies:
+    type-detect "4.0.8"
+
 "@sinonjs/commons@^1.0.2":
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.3.0.tgz#50a2754016b6f30a994ceda6d9a0a8c36adda849"
   dependencies:
     type-detect "4.0.8"
 
-"@sinonjs/formatio@3.0.0", "@sinonjs/formatio@^3.0.0":
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-3.0.0.tgz#9d282d81030a03a03fa0c5ce31fd8786a4da311a"
+"@sinonjs/formatio@^3.1.0", "@sinonjs/formatio@^3.2.1":
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-3.2.1.tgz#52310f2f9bcbc67bdac18c94ad4901b95fde267e"
+  integrity sha512-tsHvOB24rvyvV2+zKMmPkZ7dXX6LSLKZ7aOtXY6Edklp0uRcgGpOsQTTGTcWViFyx4uhWc6GV8QdnALbIbIdeQ==
   dependencies:
-    "@sinonjs/samsam" "2.1.0"
+    "@sinonjs/commons" "^1"
+    "@sinonjs/samsam" "^3.1.0"
 
-"@sinonjs/samsam@2.1.0":
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.1.0.tgz#b8b8f5b819605bd63601a6ede459156880f38ea3"
+"@sinonjs/samsam@^3.1.0", "@sinonjs/samsam@^3.3.1":
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-3.3.2.tgz#63942e3d5eb0b79f6de3bef9abfad15fb4b6401b"
+  integrity sha512-ILO/rR8LfAb60Y1Yfp9vxfYAASK43NFC2mLzpvLUbCQY/Qu8YwReboseu8aheCEkyElZF2L2T9mHcR2bgdvZyA==
   dependencies:
+    "@sinonjs/commons" "^1.0.2"
     array-from "^2.1.1"
+    lodash "^4.17.11"
 
-"@sinonjs/samsam@^2.1.2":
-  version "2.1.3"
-  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.1.3.tgz#62cf2a9b624edc795134135fe37fc2ae8ea36be3"
+"@sinonjs/text-encoding@^0.7.1":
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz#8da5c6530915653f3a1f38fd5f101d8c3f8079c5"
+  integrity sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==
 
 "@types/chai-as-promised@^7.1.0":
   version "7.1.0"
@@ -101,10 +114,10 @@
   dependencies:
     "@types/ethereum-protocol" "*"
 
-"@types/mocha@^5.2.5":
-  version "5.2.5"
-  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-5.2.5.tgz#8a4accfc403c124a0bafe8a9fc61a05ec1032073"
-  integrity sha512-lAVp+Kj54ui/vLUFxsJTMtWvZraZxum3w3Nwkble2dNuV5VnPA+Mi2oGX9XYJAaIvZi3tn3cbjS/qcJXRb6Bww==
+"@types/mocha@^5.2.7":
+  version "5.2.7"
+  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-5.2.7.tgz#315d570ccb56c53452ff8638738df60726d5b6ea"
+  integrity sha512-NYrtPht0wGzhwe9+/idPaBB+TqkY9AhTvOLMkThm0IoEfLaiVQZwBwyJ5puCkO3AUCWrmcoePjp2mbFocKy4SQ==
 
 "@types/node@*":
   version "10.12.18"
@@ -123,11 +136,16 @@
     "@types/chai" "*"
     "@types/sinon" "*"
 
-"@types/sinon@*", "@types/sinon@^7.0.3":
+"@types/sinon@*":
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-7.0.3.tgz#f8647e883d873962130f906a6114a4e187755696"
   integrity sha512-cjmJQLx2B5Hp9SzO7rdSivipo3kBqRqeYkTW17nLST1tn5YLWBjTdnzdmeTJXA1+KrrBLsEuvKQ0fUPGrfazQg==
 
+"@types/sinon@^7.0.13":
+  version "7.0.13"
+  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-7.0.13.tgz#ca039c23a9e27ebea53e0901ef928ea2a1a6d313"
+  integrity sha512-d7c/C/+H/knZ3L8/cxhicHUiTDxdgap0b/aNJfsmLwFu/iOP17mdgbQsbHA3SJmrzsjD0l3UEE5SN4xxuz5ung==
+
 abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
@@ -193,6 +211,11 @@ ajv@^6.5.5:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
+ansi-colors@3.2.3:
+  version "3.2.3"
+  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-3.2.3.tgz#57d35b8686e851e2cc04c403f1c00203976a1813"
+  integrity sha512-LEHHyuhlPY3TmuUYMh2oz89lTShfvgbmzaBcxve9t/9Wuy7Dwf4yoAKcND7KFT1HAQfqZ12qtc+DUrBMeKF9nw==
+
 ansi-regex@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
@@ -201,6 +224,11 @@ ansi-regex@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
 
+ansi-regex@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
+  integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
+
 ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
@@ -1160,6 +1188,11 @@ camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
+camelcase@^5.0.0:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
+  integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
+
 caniuse-lite@^1.0.30000844:
   version "1.0.30000916"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000916.tgz#3428d3f529f0a7b2bfaaec65e796037bdd433aab"
@@ -1172,16 +1205,19 @@ caseless@~0.12.0:
 chai-as-promised@^7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/chai-as-promised/-/chai-as-promised-7.1.1.tgz#08645d825deb8696ee61725dbf590c012eb00ca0"
+  integrity sha512-azL6xMoi+uxu6z4rhWQ1jbdUhOMhis2PvscD/xjLqNMkv3BPPp2JyyuTHOrf9BOosGpNQ11v6BKv/g57RXbiaA==
   dependencies:
     check-error "^1.0.2"
 
-chai-string@~1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/chai-string/-/chai-string-1.4.0.tgz#359140c051d36a4e4b1a5fc6b910152f438a8d49"
+chai-string@^1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/chai-string/-/chai-string-1.5.0.tgz#0bdb2d8a5f1dbe90bc78ec493c1c1c180dd4d3d2"
+  integrity sha512-sydDC3S3pNAQMYwJrs6dQX0oBQ6KfIPuOZ78n7rocW0eJJlsHPh2t3kwW7xfwYA/1Bf6/arGtSUo16rxR2JFlw==
 
-chai@^4.1.2:
+chai@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
+  integrity sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==
   dependencies:
     assertion-error "^1.1.0"
     check-error "^1.0.2"
@@ -1200,7 +1236,7 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.3.0:
+chalk@^2.0.1, chalk@^2.3.0:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
   integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
@@ -1328,10 +1364,6 @@ commander@2.11.0:
   version "2.11.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
 
-commander@2.15.1:
-  version "2.15.1"
-  resolved "http://registry.npmjs.org/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
-
 commander@^2.12.1, commander@^2.8.1, commander@^2.9.0:
   version "2.19.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.19.0.tgz#f6198aa84e5b83c46054b94ddedbfed5ee9ff12a"
@@ -1451,6 +1483,17 @@ cross-spawn@^5.0.1:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
+cross-spawn@^6.0.0:
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
+  integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
+  dependencies:
+    nice-try "^1.0.4"
+    path-key "^2.0.1"
+    semver "^5.5.0"
+    shebang-command "^1.2.0"
+    which "^1.2.9"
+
 crypto-browserify@3.12.0:
   version "3.12.0"
   resolved "https://registry.yarnpkg.com/crypto-browserify/-/crypto-browserify-3.12.0.tgz#396cf9f3137f03e4b8e532c58f698254e00f80ec"
@@ -1486,14 +1529,14 @@ debug@3.1.0:
   dependencies:
     ms "2.0.0"
 
-debug@^3.1.0:
+debug@3.2.6, debug@^3.1.0:
   version "3.2.6"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   integrity sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==
   dependencies:
     ms "^2.1.1"
 
-decamelize@^1.1.1:
+decamelize@^1.1.1, decamelize@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
 
@@ -1715,6 +1758,11 @@ elliptic@^6.0.0, elliptic@^6.2.3, elliptic@^6.4.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.0"
 
+emoji-regex@^7.0.1:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
+  integrity sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==
+
 encodeurl@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
@@ -1768,7 +1816,19 @@ es-abstract@^1.5.0:
     is-callable "^1.1.3"
     is-regex "^1.0.4"
 
-es-to-primitive@^1.1.1:
+es-abstract@^1.5.1:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.13.0.tgz#ac86145fdd5099d8dd49558ccba2eaf9b88e24e9"
+  integrity sha512-vDZfg/ykNxQVwup/8E1BZhVzFfBxs9NqMzGcvIJrqg5k2/5Za2bWo40dK2J1pgLngZ7c+Shh8lwYtLGyrwPutg==
+  dependencies:
+    es-to-primitive "^1.2.0"
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    is-callable "^1.1.4"
+    is-regex "^1.0.4"
+    object-keys "^1.0.12"
+
+es-to-primitive@^1.1.1, es-to-primitive@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.0.tgz#edf72478033456e8dda8ef09e00ad9650707f377"
   dependencies:
@@ -1994,7 +2054,7 @@ ethereumjs-tx@1.3.7, ethereumjs-tx@^1.1.1, ethereumjs-tx@^1.2.0, ethereumjs-tx@^
     ethereum-common "^0.0.18"
     ethereumjs-util "^5.0.0"
 
-ethereumjs-util@5.2.0, 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, ethereumjs-util@^5.2.0:
+ethereumjs-util@5.2.0, 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"
   dependencies:
@@ -2077,17 +2137,18 @@ ethereumjs-vm@^2.0.2, ethereumjs-vm@^2.1.0, ethereumjs-vm@^2.3.4:
     rustbn.js "~0.2.0"
     safe-buffer "^5.1.1"
 
-ethereumjs-wallet@0.6.2:
-  version "0.6.2"
-  resolved "https://registry.yarnpkg.com/ethereumjs-wallet/-/ethereumjs-wallet-0.6.2.tgz#67244b6af3e8113b53d709124b25477b64aeccda"
-  integrity sha512-DHEKPV9lYORM7dL8602dkb+AgdfzCYz2lxpdYQoD3OwG355LLDuivW9rGuLpDMCry/ORyBYV6n+QCo/71SwACg==
+ethereumjs-wallet@0.6.3:
+  version "0.6.3"
+  resolved "https://registry.yarnpkg.com/ethereumjs-wallet/-/ethereumjs-wallet-0.6.3.tgz#b0eae6f327637c2aeb9ccb9047b982ac542e6ab1"
+  integrity sha512-qiXPiZOsStem+Dj/CQHbn5qex+FVkuPmGH7SvSnA9F3tdRDt8dLMyvIj3+U05QzVZNPYh4HXEdnzoYI4dZkr9w==
   dependencies:
     aes-js "^3.1.1"
     bs58check "^2.1.2"
-    ethereumjs-util "^5.2.0"
-    hdkey "^1.0.0"
+    ethereumjs-util "^6.0.0"
+    hdkey "^1.1.0"
+    randombytes "^2.0.6"
     safe-buffer "^5.1.2"
-    scrypt.js "^0.2.0"
+    scrypt.js "^0.3.0"
     utf8 "^3.0.0"
     uuid "^3.3.2"
 
@@ -2147,6 +2208,19 @@ execa@^0.7.0:
     signal-exit "^3.0.0"
     strip-eof "^1.0.0"
 
+execa@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-1.0.0.tgz#c6236a5bb4df6d6f15e88e7f017798216749ddd8"
+  integrity sha512-adbxcyWV46qiHyvSp50TKt05tB4tK3HcmF7/nxfAdhnox83seTDbwnaqKO4sXRy7roHAIFqJP/Rw/AuEbX61LA==
+  dependencies:
+    cross-spawn "^6.0.0"
+    get-stream "^4.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
 expand-brackets@^0.1.4:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/expand-brackets/-/expand-brackets-0.1.5.tgz#df07284e342a807cd733ac5af72411e581d1177b"
@@ -2332,6 +2406,13 @@ finalhandler@1.1.1:
     statuses "~1.4.0"
     unpipe "~1.0.0"
 
+find-up@3.0.0, find-up@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+  integrity sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==
+  dependencies:
+    locate-path "^3.0.0"
+
 find-up@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
@@ -2345,6 +2426,13 @@ find-up@^2.1.0:
   dependencies:
     locate-path "^2.0.0"
 
+flat@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/flat/-/flat-4.1.0.tgz#090bec8b05e39cba309747f1d588f04dbaf98db2"
+  integrity sha512-Px/TiLIznH7gEDlPXcUD4KnBusa6kR6ayRUVcnEAbreRIuhkqow/mun59BuRXwoYk7ZQOLW1ZM05ilIvK38hFw==
+  dependencies:
+    is-buffer "~2.0.3"
+
 for-each@^0.3.2, for-each@~0.3.3:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.3.tgz#69b447e88a0a5d32c3e7084f3f1710034b21376e"
@@ -2462,10 +2550,10 @@ 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"
 
-ganache-core@2.5.6-beta.0:
-  version "2.5.6-beta.0"
-  resolved "https://registry.yarnpkg.com/ganache-core/-/ganache-core-2.5.6-beta.0.tgz#34e0b7d97369dde857b4d2617befc1c1a18c6afd"
-  integrity sha512-25GzUbk2Ul6VcjEgykPr6jyq8W9EH+pVY87mU347EBDHv8f7KnnqerNyniEefJfQX5WcWGnl4QKf2PPfJMCfAw==
+ganache-core@^2.5.7:
+  version "2.5.7"
+  resolved "https://registry.yarnpkg.com/ganache-core/-/ganache-core-2.5.7.tgz#03c74c8cb20dc1266990d0f7fb4ed3f71f55f6b3"
+  integrity sha512-/v5ak4QiJzOCVhyXtx/2QeDXjDdZovAhX6EIiqnH2ng9aKzG5h59Y5ZyS1xzX2pkLKDY0uRA1WIBdScsEJyi9A==
   dependencies:
     abstract-leveldown "3.0.0"
     async "2.6.1"
@@ -2494,7 +2582,7 @@ ganache-core@2.5.6-beta.0:
     web3-provider-engine "14.1.0"
     websocket "1.0.26"
   optionalDependencies:
-    ethereumjs-wallet "0.6.2"
+    ethereumjs-wallet "0.6.3"
     web3 "1.0.0-beta.35"
 
 gauge@~2.7.3:
@@ -2514,6 +2602,11 @@ get-caller-file@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.3.tgz#f978fa4c90d1dfe7ff2d6beda2a515e713bdcf4a"
 
+get-caller-file@^2.0.1:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
+  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
+
 get-func-name@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/get-func-name/-/get-func-name-2.0.0.tgz#ead774abee72e20409433a066366023dd6887a41"
@@ -2529,6 +2622,13 @@ get-stream@^3.0.0:
   version "3.0.0"
   resolved "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
 
+get-stream@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-4.1.0.tgz#c1b255575f3dc21d59bfc79cd3d2b46b1c3a54b5"
+  integrity sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==
+  dependencies:
+    pump "^3.0.0"
+
 get-value@^2.0.3, get-value@^2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
@@ -2564,7 +2664,7 @@ glob@7.1.2:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^7.0.5, glob@^7.1.1, glob@^7.1.3, glob@~7.1.2:
+glob@7.1.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.3, glob@~7.1.2:
   version "7.1.3"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
   dependencies:
@@ -2693,7 +2793,7 @@ has-values@^1.0.0:
     is-number "^3.0.0"
     kind-of "^4.0.0"
 
-has@^1.0.1, has@~1.0.3:
+has@^1.0.1, has@^1.0.3, has@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
   dependencies:
@@ -2720,7 +2820,7 @@ hash.js@^1.0.0, hash.js@^1.0.3:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.1"
 
-hdkey@^1.0.0:
+hdkey@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/hdkey/-/hdkey-1.1.1.tgz#c2b3bfd5883ff9529b72f2f08b28be0972a9f64a"
   integrity sha512-DvHZ5OuavsfWs5yfVJZestsnc3wzPvLWNk6c2nRUfo6X+OtxypGt20vDDf7Ba+MJzjL3KS1og2nw2eBbLCOUTA==
@@ -2733,6 +2833,11 @@ he@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
+he@1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
+  integrity sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==
+
 heap@0.2.6:
   version "0.2.6"
   resolved "https://registry.yarnpkg.com/heap/-/heap-0.2.6.tgz#087e1f10b046932fc8594dd9e6d378afc9d1e5ac"
@@ -2830,6 +2935,11 @@ invert-kv@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
 
+invert-kv@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-2.0.0.tgz#7393f5afa59ec9ff5f67a27620d11c226e3eec02"
+  integrity sha512-wPVv/y/QQ/Uiirj/vh3oP+1Ww+AWehmi1g5fFWGPF6IpCBCDVrhgHRMvrLfdYcwDh3QJbGXDW4JAuzxElLSqKA==
+
 ipaddr.js@1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.8.0.tgz#eaa33d6ddd7ace8f7f6fe0c9ca0440e706738b1e"
@@ -2860,6 +2970,11 @@ is-buffer@^1.1.5:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
 
+is-buffer@~2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-2.0.3.tgz#4ecf3fcf749cbd1e472689e109ac66261a25e725"
+  integrity sha512-U15Q7MXTuZlrbymiz95PJpZxu8IlipAp4dtS3wOdgPXx3mqBnslrWU14kxfHB+Py/+2PVKSr37dMAgM2A4uArw==
+
 is-builtin-module@^1.0.0:
   version "1.0.0"
   resolved "http://registry.npmjs.org/is-builtin-module/-/is-builtin-module-1.0.0.tgz#540572d34f7ac3119f8f76c30cbc1b1e037affbe"
@@ -3093,6 +3208,14 @@ 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@3.13.1:
+  version "3.13.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
+  integrity sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 js-yaml@^3.7.0:
   version "3.12.1"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.12.1.tgz#295c8632a18a23e054cf5c9d3cecafe678167600"
@@ -3190,9 +3313,10 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
-just-extend@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-3.0.0.tgz#cee004031eaabf6406da03a7b84e4fe9d78ef288"
+just-extend@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-4.0.2.tgz#f3f47f7dfca0f989c55410a7ebc8854b07108afc"
+  integrity sha512-FrLwOgm+iXrPV+5zDU6Jqu4gCRXbWEQg2O3SKONsWE4w7AXFRkryS53bpWdaL9cNol+AmR3AEYz6kn+o0fCPnw==
 
 keccak@^1.0.2:
   version "1.4.0"
@@ -3242,6 +3366,13 @@ lcid@^1.0.0:
   dependencies:
     invert-kv "^1.0.0"
 
+lcid@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/lcid/-/lcid-2.0.0.tgz#6ef5d2df60e52f82eb228a4c373e8d1f397253cf"
+  integrity sha512-avPEb8P8EGnwXKClwsNUgryVjllcRqtMYa49NTsbQagYuT1DcXnl1915oxWjoyGrXR6zH/Y0Zc96xWsPcoDKeA==
+  dependencies:
+    invert-kv "^2.0.0"
+
 level-codec@^9.0.0:
   version "9.0.0"
   resolved "https://registry.yarnpkg.com/level-codec/-/level-codec-9.0.0.tgz#2d3a0e835c4aa8339ec63de3f5a37480b74a5f87"
@@ -3365,21 +3496,38 @@ locate-path@^2.0.0:
     p-locate "^2.0.0"
     path-exists "^3.0.0"
 
+locate-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
+  integrity sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==
+  dependencies:
+    p-locate "^3.0.0"
+    path-exists "^3.0.0"
+
 lodash.assign@^4.0.3, lodash.assign@^4.0.6:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
 
-lodash.get@^4.4.2:
-  version "4.4.2"
-  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
-
 lodash@4.17.11, lodash@^4.14.2, lodash@^4.17.10, lodash@^4.17.4:
   version "4.17.11"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
 
-lolex@^2.3.2, lolex@^2.7.5:
-  version "2.7.5"
-  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.7.5.tgz#113001d56bfc7e02d56e36291cc5c413d1aa0733"
+lodash@^4.17.11:
+  version "4.17.14"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.14.tgz#9ce487ae66c96254fe20b599f21b6816028078ba"
+  integrity sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==
+
+log-symbols@2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-2.2.0.tgz#5740e1c5d6f0dfda4ad9323b5332107ef6b4c40a"
+  integrity sha512-VeIAFslyIerEJLXHziedo2basKbMKtTw3vfn5IzG0XTjhAVEJyNHnL2p7vc+wBDSdQuUpNw3M2u6xb9QsAY5Eg==
+  dependencies:
+    chalk "^2.0.1"
+
+lolex@^4.0.1, lolex@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-4.1.0.tgz#ecdd7b86539391d8237947a3419aa8ac975f0fe1"
+  integrity sha512-BYxIEXiVq5lGIXeVHnsFzqa1TxN5acnKnPCdlZSpzm8viNEOhiigupA4vTQ9HEFQ6nLTQ9wQOgBknJgzUYQ9Aw==
 
 looper@^2.0.0:
   version "2.0.0"
@@ -3431,6 +3579,13 @@ make-error@^1.1.1:
   resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.5.tgz#efe4e81f6db28cadd605c70f29c831b58ef776c8"
   integrity sha512-c3sIjNUow0+8swNwVpqoH4YCShKNFkMaw6oH1mNS2haDZQqkeZFlHS3dhoeEbKKmJB4vXpJucU6oH75aDYeE9g==
 
+map-age-cleaner@^0.1.1:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/map-age-cleaner/-/map-age-cleaner-0.1.3.tgz#7d583a7306434c055fe474b0f45078e6e1b4b92a"
+  integrity sha512-bJzx6nMoP6PDLPBFmg7+xRKeFZvFboMrGlxmNj9ClvX53KrmvM5bXFXEWjbz4cz1AFn+jWJ9z/DJSz7hrs0w3w==
+  dependencies:
+    p-defer "^1.0.0"
+
 map-cache@^0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/map-cache/-/map-cache-0.2.2.tgz#c32abd0bd6525d9b051645bb4f26ac5dc98a0dbf"
@@ -3463,6 +3618,15 @@ mem@^1.1.0:
   dependencies:
     mimic-fn "^1.0.0"
 
+mem@^4.0.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/mem/-/mem-4.3.0.tgz#461af497bc4ae09608cdb2e60eefb69bff744178"
+  integrity sha512-qX2bG48pTqYRVmDB37rn/6PT7LcR8T7oAX3bf99u1Tt1nzxYfxkgqDwUwolPlXweM0XzBOBFzSx4kfp7KP1s/w==
+  dependencies:
+    map-age-cleaner "^0.1.1"
+    mimic-fn "^2.0.0"
+    p-is-promise "^2.0.0"
+
 memdown@^1.0.0:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/memdown/-/memdown-1.4.1.tgz#b4e4e192174664ffbae41361aa500f3119efe215"
@@ -3575,6 +3739,11 @@ mimic-fn@^1.0.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
 
+mimic-fn@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
+  integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
+
 mimic-response@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
@@ -3654,21 +3823,34 @@ mocha@^4.0.1:
     mkdirp "0.5.1"
     supports-color "4.4.0"
 
-mocha@^5.1.1:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.2.0.tgz#6d8ae508f59167f940f2b5b3c4a612ae50c90ae6"
+mocha@^6.1.4:
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.1.4.tgz#e35fada242d5434a7e163d555c705f6875951640"
+  integrity sha512-PN8CIy4RXsIoxoFJzS4QNnCH4psUCPWc4/rPrst/ecSJJbLBkubMiyGCP2Kj/9YnWbotFqAoeXyXMucj7gwCFg==
   dependencies:
+    ansi-colors "3.2.3"
     browser-stdout "1.3.1"
-    commander "2.15.1"
-    debug "3.1.0"
+    debug "3.2.6"
     diff "3.5.0"
     escape-string-regexp "1.0.5"
-    glob "7.1.2"
+    find-up "3.0.0"
+    glob "7.1.3"
     growl "1.10.5"
-    he "1.1.1"
+    he "1.2.0"
+    js-yaml "3.13.1"
+    log-symbols "2.2.0"
     minimatch "3.0.4"
     mkdirp "0.5.1"
-    supports-color "5.4.0"
+    ms "2.1.1"
+    node-environment-flags "1.0.5"
+    object.assign "4.1.0"
+    strip-json-comments "2.0.1"
+    supports-color "6.0.0"
+    which "1.3.1"
+    wide-align "1.1.3"
+    yargs "13.2.2"
+    yargs-parser "13.0.0"
+    yargs-unparser "1.5.0"
 
 mock-fs@^4.1.0:
   version "4.7.0"
@@ -3682,7 +3864,7 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
-ms@^2.1.1:
+ms@2.1.1, ms@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
   integrity sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==
@@ -3735,15 +3917,29 @@ negotiator@0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
 
-nise@^1.4.5:
-  version "1.4.6"
-  resolved "https://registry.yarnpkg.com/nise/-/nise-1.4.6.tgz#76cc3915925056ae6c405dd8ad5d12bde570c19f"
+nice-try@^1.0.4:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
+  integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
+
+nise@^1.4.10:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-1.5.0.tgz#d03ea0e6c1b75c638015aa3585eddc132949a50d"
+  integrity sha512-Z3sfYEkLFzFmL8KY6xnSJLRxwQwYBjOXi/24lb62ZnZiGA0JUzGGTI6TBIgfCSMIDl9Jlu8SRmHNACLTemDHww==
   dependencies:
-    "@sinonjs/formatio" "3.0.0"
-    just-extend "^3.0.0"
-    lolex "^2.3.2"
+    "@sinonjs/formatio" "^3.1.0"
+    "@sinonjs/text-encoding" "^0.7.1"
+    just-extend "^4.0.2"
+    lolex "^4.1.0"
     path-to-regexp "^1.7.0"
-    text-encoding "^0.6.4"
+
+node-environment-flags@1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/node-environment-flags/-/node-environment-flags-1.0.5.tgz#fa930275f5bf5dae188d6192b24b4c8bbac3d76a"
+  integrity sha512-VNYPRfGfmZLx0Ye20jWzHUjyTW/c+6Wq+iLhDzUI4XmhrDd9l/FozXV3F2xOaXjvp0co0+v1YSR3CMP6g+VvLQ==
+  dependencies:
+    object.getownpropertydescriptors "^2.0.3"
+    semver "^5.7.0"
 
 node-fetch@2.1.2:
   version "2.1.2"
@@ -3851,6 +4047,11 @@ object-inspect@~1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.6.0.tgz#c70b6cbf72f274aab4c34c0c82f5167bf82cf15b"
 
+object-keys@^1.0.11:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.1.1.tgz#1c47f272df277f3b1daf061677d9c82e2322c60e"
+  integrity sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==
+
 object-keys@^1.0.12:
   version "1.0.12"
   resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.0.12.tgz#09c53855377575310cca62f55bb334abff7b3ed2"
@@ -3865,6 +4066,24 @@ object-visit@^1.0.0:
   dependencies:
     isobject "^3.0.0"
 
+object.assign@4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.1.0.tgz#968bf1100d7956bb3ca086f006f846b3bc4008da"
+  integrity sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==
+  dependencies:
+    define-properties "^1.1.2"
+    function-bind "^1.1.1"
+    has-symbols "^1.0.0"
+    object-keys "^1.0.11"
+
+object.getownpropertydescriptors@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz#8758c846f5b407adab0f236e0986f14b051caa16"
+  integrity sha1-h1jIRvW0B62rDyNuCYbxSwUcqhY=
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.5.1"
+
 object.omit@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/object.omit/-/object.omit-2.0.1.tgz#1a9c744829f39dbb858c76ca3579ae2a54ebd1fa"
@@ -3919,6 +4138,15 @@ os-locale@^2.0.0:
     lcid "^1.0.0"
     mem "^1.1.0"
 
+os-locale@^3.0.0, os-locale@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-3.1.0.tgz#a802a6ee17f24c10483ab9935719cef4ed16bf1a"
+  integrity sha512-Z8l3R4wYWM40/52Z+S265okfFj8Kt2cC2MKY+xNi3kFs+XGI7WXu/I309QQQYbRW4ijiZ+yxs9pqEhJh0DqW3Q==
+  dependencies:
+    execa "^1.0.0"
+    lcid "^2.0.0"
+    mem "^4.0.0"
+
 os-tmpdir@^1.0.0, os-tmpdir@^1.0.1, os-tmpdir@~1.0.2:
   version "1.0.2"
   resolved "http://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
@@ -3934,22 +4162,46 @@ p-cancelable@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-0.3.0.tgz#b9e123800bcebb7ac13a479be195b507b98d30fa"
 
+p-defer@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-defer/-/p-defer-1.0.0.tgz#9f6eb182f6c9aa8cd743004a7d4f96b196b0fb0c"
+  integrity sha1-n26xgvbJqozXQwBKfU+WsZaw+ww=
+
 p-finally@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
 
+p-is-promise@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/p-is-promise/-/p-is-promise-2.1.0.tgz#918cebaea248a62cf7ffab8e3bca8c5f882fc42e"
+  integrity sha512-Y3W0wlRPK8ZMRbNq97l4M5otioeA5lm1z7bkNkxCka8HSPjR0xRWmpCmc9utiaLP9Jb1eD8BgeIxTW4AIF45Pg==
+
 p-limit@^1.1.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.3.0.tgz#b86bd5f0c25690911c7590fcbfc2010d54b3ccb8"
   dependencies:
     p-try "^1.0.0"
 
+p-limit@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.2.0.tgz#417c9941e6027a9abcba5092dd2904e255b5fbc2"
+  integrity sha512-pZbTJpoUsCzV48Mc9Nh51VbwO0X9cuPFE8gYwx9BTCt9SF8/b7Zljd2fVgOxhIF/HDTKgpVzs+GPhyKfjLLFRQ==
+  dependencies:
+    p-try "^2.0.0"
+
 p-locate@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-2.0.0.tgz#20a0103b222a70c8fd39cc2e580680f3dde5ec43"
   dependencies:
     p-limit "^1.1.0"
 
+p-locate@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
+  integrity sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==
+  dependencies:
+    p-limit "^2.0.0"
+
 p-timeout@^1.1.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/p-timeout/-/p-timeout-1.2.1.tgz#5eb3b353b7fce99f101a1038880bb054ebbea386"
@@ -3960,6 +4212,11 @@ p-try@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
 
+p-try@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
+  integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
+
 parse-asn1@^5.0.0:
   version "5.1.1"
   resolved "http://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.1.tgz#f6bf293818332bd0dab54efb16087724745e6ca8"
@@ -4019,7 +4276,7 @@ path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
   version "1.0.1"
   resolved "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
 
-path-key@^2.0.0:
+path-key@^2.0.0, path-key@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
 
@@ -4197,6 +4454,14 @@ pull-window@^2.1.4:
   dependencies:
     looper "^2.0.0"
 
+pump@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-3.0.0.tgz#b4a2116815bde2f4e1ea602354e8c75565107a64"
+  integrity sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
 punycode@1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.3.2.tgz#9653a036fb7c1ee42342f2325cceefea3926c48d"
@@ -4243,6 +4508,13 @@ randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5:
   dependencies:
     safe-buffer "^5.1.0"
 
+randombytes@^2.0.6:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
+  integrity sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==
+  dependencies:
+    safe-buffer "^5.1.0"
+
 randomfill@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/randomfill/-/randomfill-1.0.4.tgz#c92196fc86ab42be983f1bf31778224931d61458"
@@ -4435,6 +4707,11 @@ require-main-filename@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
 
+require-main-filename@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-2.0.0.tgz#d0b329ecc7cc0f61649f62215be69af54aa8989b"
+  integrity sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==
+
 resolve-url@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
@@ -4524,13 +4801,22 @@ scrypt-js@2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/scrypt-js/-/scrypt-js-2.0.4.tgz#32f8c5149f0797672e551c07e230f834b6af5f16"
 
-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"
   dependencies:
     scrypt "^6.0.2"
     scryptsy "^1.2.1"
 
+scrypt.js@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/scrypt.js/-/scrypt.js-0.3.0.tgz#6c62d61728ad533c8c376a2e5e3e86d41a95c4c0"
+  integrity sha512-42LTc1nyFsyv/o0gcHtDztrn+aqpkaCNt5Qh7ATBZfhEZU7IC/0oT/qbBH+uRNoAPvs2fwiOId68FDEoSRA8/A==
+  dependencies:
+    scryptsy "^1.2.1"
+  optionalDependencies:
+    scrypt "^6.0.2"
+
 scrypt@^6.0.2:
   version "6.0.3"
   resolved "https://registry.yarnpkg.com/scrypt/-/scrypt-6.0.3.tgz#04e014a5682b53fa50c2d5cce167d719c06d870d"
@@ -4575,6 +4861,11 @@ semaphore@>=1.0.1, semaphore@^1.0.3:
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
 
+semver@^5.7.0:
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.0.tgz#790a7cf6fea5459bac96110b29b60412dc8ff96b"
+  integrity sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==
+
 semver@~5.4.1:
   version "5.4.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
@@ -4693,23 +4984,23 @@ simple-get@^2.7.0:
     once "^1.3.1"
     simple-concat "^1.0.0"
 
-sinon-chai@^3.2.0:
+sinon-chai@^3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/sinon-chai/-/sinon-chai-3.3.0.tgz#8084ff99451064910fbe2c2cb8ab540c00b740ea"
+  integrity sha512-r2JhDY7gbbmh5z3Q62pNbrjxZdOAjpsqW/8yxAZRSqLZqowmfGZPGUZPFf3UX36NLis0cv8VEM5IJh9HgkSOAA==
 
-sinon@^6.1.5:
-  version "6.3.5"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.3.5.tgz#0f6d6a5b4ebaad1f6e8e019395542d1d02c144a0"
+sinon@^7.3.2:
+  version "7.3.2"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-7.3.2.tgz#82dba3a6d85f6d2181e1eca2c10d8657c2161f28"
+  integrity sha512-thErC1z64BeyGiPvF8aoSg0LEnptSaWE7YhdWWbWXgelOyThent7uKOnnEh9zBxDbKixtr5dEko+ws1sZMuFMA==
   dependencies:
-    "@sinonjs/commons" "^1.0.2"
-    "@sinonjs/formatio" "^3.0.0"
-    "@sinonjs/samsam" "^2.1.2"
+    "@sinonjs/commons" "^1.4.0"
+    "@sinonjs/formatio" "^3.2.1"
+    "@sinonjs/samsam" "^3.3.1"
     diff "^3.5.0"
-    lodash.get "^4.4.2"
-    lolex "^2.7.5"
-    nise "^1.4.5"
+    lolex "^4.0.1"
+    nise "^1.4.10"
     supports-color "^5.5.0"
-    type-detect "^4.0.8"
 
 slash@^1.0.0:
   version "1.0.0"
@@ -4750,19 +5041,10 @@ sol-explore@1.6.1:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/sol-explore/-/sol-explore-1.6.1.tgz#b59f073c69fe332560d5a10c32ba8ca7f2986cfb"
 
-solc@^0.4.2:
-  version "0.4.25"
-  resolved "https://registry.yarnpkg.com/solc/-/solc-0.4.25.tgz#06b8321f7112d95b4b903639b1138a4d292f5faa"
-  dependencies:
-    fs-extra "^0.30.0"
-    memorystream "^0.3.1"
-    require-from-string "^1.1.0"
-    semver "^5.3.0"
-    yargs "^4.7.1"
-
-solc@^0.5.1:
+solc@0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/solc/-/solc-0.5.1.tgz#2867cb886b9475f0e8ee90566c1fad3e2d6ed90a"
+  integrity sha512-+RJfa5zRpWBm8DhEiEScIzEzPHWppwHSp/2yV9qvM/lNr0Y8cCv2mcNiXy+R6SSV0OoskhPEfe6Fwa4QQEgxlg==
   dependencies:
     command-exists "^1.2.8"
     fs-extra "^0.30.0"
@@ -4773,6 +5055,16 @@ solc@^0.5.1:
     tmp "0.0.33"
     yargs "^11.0.0"
 
+solc@^0.4.2:
+  version "0.4.25"
+  resolved "https://registry.yarnpkg.com/solc/-/solc-0.4.25.tgz#06b8321f7112d95b4b903639b1138a4d292f5faa"
+  dependencies:
+    fs-extra "^0.30.0"
+    memorystream "^0.3.1"
+    require-from-string "^1.1.0"
+    semver "^5.3.0"
+    yargs "^4.7.1"
+
 solium-plugin-security@0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/solium-plugin-security/-/solium-plugin-security-0.1.1.tgz#2a87bcf8f8c3abf7d198e292e4ac080284e3f3f6"
@@ -4928,6 +5220,15 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^4.0.0"
 
+string-width@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-3.1.0.tgz#22767be21b62af1081574306f69ac51b62203961"
+  integrity sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==
+  dependencies:
+    emoji-regex "^7.0.1"
+    is-fullwidth-code-point "^2.0.0"
+    strip-ansi "^5.1.0"
+
 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"
@@ -4958,6 +5259,13 @@ strip-ansi@^4.0.0:
   dependencies:
     ansi-regex "^3.0.0"
 
+strip-ansi@^5.1.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-5.2.0.tgz#8c9a536feb6afc962bdfa5b104a5091c1ad9c0ae"
+  integrity sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==
+  dependencies:
+    ansi-regex "^4.1.0"
+
 strip-bom@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-2.0.0.tgz#6219a85616520491f35788bdbf1447a99c7e6b0e"
@@ -4980,7 +5288,7 @@ strip-hex-prefix@1.0.0:
   dependencies:
     is-hex-prefixed "1.0.0"
 
-strip-json-comments@~2.0.1:
+strip-json-comments@2.0.1, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
@@ -4990,9 +5298,10 @@ supports-color@4.4.0:
   dependencies:
     has-flag "^2.0.0"
 
-supports-color@5.4.0:
-  version "5.4.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
+supports-color@6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-6.0.0.tgz#76cfe742cf1f41bb9b1c29ad03068c05b4c0e40a"
+  integrity sha512-on9Kwidc1IUQo+bQdhi8+Tijpo0e1SS6RoGo2guUwn5vdaxw8RXOF9Vb2ws+ihWOmh4JnCJOvaziZWP1VABaLg==
   dependencies:
     has-flag "^3.0.0"
 
@@ -5084,10 +5393,6 @@ tar@^4:
     safe-buffer "^5.1.2"
     yallist "^3.0.2"
 
-text-encoding@^0.6.4:
-  version "0.6.4"
-  resolved "http://registry.npmjs.org/text-encoding/-/text-encoding-0.6.4.tgz#e399a982257a276dae428bb92845cb71bdc26d19"
-
 text-table@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
@@ -5241,7 +5546,7 @@ tweetnacl@^1.0.0:
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-1.0.1.tgz#2594d42da73cd036bd0d2a54683dd35a6b55ca17"
   integrity sha512-kcoMoKTPYnoeS50tzoqjPY3Uv9axeuuFAZY9M/9zFnhoVvRfxz9K29IMPD7jGmt2c8SW7i3gT9WqDl2+nV7p4A==
 
-type-detect@4.0.8, type-detect@^4.0.0, type-detect@^4.0.5, type-detect@^4.0.8:
+type-detect@4.0.8, type-detect@^4.0.0, type-detect@^4.0.5:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
 
@@ -5693,13 +5998,13 @@ which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
 
-which@^1.2.9:
+which@1.3.1, which@^1.2.9:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
   dependencies:
     isexe "^2.0.0"
 
-wide-align@^1.1.0:
+wide-align@1.1.3, wide-align@^1.1.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz#ae074e6bdc0c14a431e804e624549c633b000457"
   dependencies:
@@ -5785,6 +6090,11 @@ y18n@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
 
+"y18n@^3.2.1 || ^4.0.0", y18n@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
+  integrity sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==
+
 yaeti@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/yaeti/-/yaeti-0.0.6.tgz#f26f484d72684cf42bedfb76970aa1608fbf9577"
@@ -5797,6 +6107,30 @@ yallist@^3.0.0, yallist@^3.0.2:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.0.3.tgz#b4b049e314be545e3ce802236d6cd22cd91c3de9"
 
+yargs-parser@13.0.0:
+  version "13.0.0"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-13.0.0.tgz#3fc44f3e76a8bdb1cc3602e860108602e5ccde8b"
+  integrity sha512-w2LXjoL8oRdRQN+hOyppuXs+V/fVAYtpcrRxZuF7Kt/Oc+Jr2uAcVntaUTNT6w5ihoWfFDpNY8CPx1QskxZ/pw==
+  dependencies:
+    camelcase "^5.0.0"
+    decamelize "^1.2.0"
+
+yargs-parser@^11.1.1:
+  version "11.1.1"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-11.1.1.tgz#879a0865973bca9f6bab5cbdf3b1c67ec7d3bcf4"
+  integrity sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==
+  dependencies:
+    camelcase "^5.0.0"
+    decamelize "^1.2.0"
+
+yargs-parser@^13.0.0:
+  version "13.1.1"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-13.1.1.tgz#d26058532aa06d365fe091f6a1fc06b2f7e5eca0"
+  integrity sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==
+  dependencies:
+    camelcase "^5.0.0"
+    decamelize "^1.2.0"
+
 yargs-parser@^2.4.1:
   version "2.4.1"
   resolved "http://registry.npmjs.org/yargs-parser/-/yargs-parser-2.4.1.tgz#85568de3cf150ff49fa51825f03a8c880ddcc5c4"
@@ -5816,6 +6150,32 @@ yargs-parser@^9.0.2:
   dependencies:
     camelcase "^4.1.0"
 
+yargs-unparser@1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/yargs-unparser/-/yargs-unparser-1.5.0.tgz#f2bb2a7e83cbc87bb95c8e572828a06c9add6e0d"
+  integrity sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==
+  dependencies:
+    flat "^4.1.0"
+    lodash "^4.17.11"
+    yargs "^12.0.5"
+
+yargs@13.2.2:
+  version "13.2.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.2.2.tgz#0c101f580ae95cea7f39d927e7770e3fdc97f993"
+  integrity sha512-WyEoxgyTD3w5XRpAQNYUB9ycVH/PQrToaTXdYXRdOXvEy1l19br+VJsc0vcO8PTGg5ro/l/GY7F/JMEBmI0BxA==
+  dependencies:
+    cliui "^4.0.0"
+    find-up "^3.0.0"
+    get-caller-file "^2.0.1"
+    os-locale "^3.1.0"
+    require-directory "^2.1.1"
+    require-main-filename "^2.0.0"
+    set-blocking "^2.0.0"
+    string-width "^3.0.0"
+    which-module "^2.0.0"
+    y18n "^4.0.0"
+    yargs-parser "^13.0.0"
+
 yargs@^10.0.3:
   version "10.1.2"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.2.tgz#454d074c2b16a51a43e2fb7807e4f9de69ccb5c5"
@@ -5850,6 +6210,24 @@ yargs@^11.0.0:
     y18n "^3.2.1"
     yargs-parser "^9.0.2"
 
+yargs@^12.0.5:
+  version "12.0.5"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-12.0.5.tgz#05f5997b609647b64f66b81e3b4b10a368e7ad13"
+  integrity sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==
+  dependencies:
+    cliui "^4.0.0"
+    decamelize "^1.2.0"
+    find-up "^3.0.0"
+    get-caller-file "^1.0.1"
+    os-locale "^3.0.0"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1 || ^4.0.0"
+    yargs-parser "^11.1.1"
+
 yargs@^4.7.1:
   version "4.8.1"
   resolved "http://registry.npmjs.org/yargs/-/yargs-4.8.1.tgz#c0c42924ca4aaa6b0e6da1739dfb216439f9ddc0"