diff --git a/package-lock.json b/package-lock.json
index b8c3669..e835331 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3969,10 +3969,21 @@
       }
     },
     "eslint-utils": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/eslint-utils/-/eslint-utils-1.3.1.tgz",
-      "integrity": "sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==",
-      "dev": true
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/eslint-utils/-/eslint-utils-1.4.3.tgz",
+      "integrity": "sha512-fbBN5W2xdY45KulGXmLHZ3c3FHfVYmKg0IrAKGOkT/464PQsx2UeIzfz1RmEci+KLm1bBaAzZAh8+/E+XAeZ8Q==",
+      "dev": true,
+      "requires": {
+        "eslint-visitor-keys": "^1.1.0"
+      },
+      "dependencies": {
+        "eslint-visitor-keys": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-1.1.0.tgz",
+          "integrity": "sha512-8y9YjtM1JBJU/A9Kc+SbaOV4y29sSWckBwMHa+FGtVj5gN/sbnKDf6xJUl+8g7FAij9LVaP8C24DUiH/f/2Z9A==",
+          "dev": true
+        }
+      }
     },
     "eslint-visitor-keys": {
       "version": "1.0.0",
diff --git a/yarn.lock b/yarn.lock
index e85c343..dc8838c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -25,6 +25,21 @@
   dependencies:
     regenerator-runtime "^0.13.2"
 
+"@openzeppelin/test-helpers@^0.5.3":
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/test-helpers/-/test-helpers-0.5.3.tgz#c7a082fa5567f46ecad8c1a0ac38a53b7e8a96cc"
+  integrity sha512-Zq7hAS/FIDwd5CUdh4TX4MxQmIQGCUSI72U80J7+3fjXawRTSTYMjOu9KHpvSHX5mcCWlFF3qbM7b2dHjgZ26g==
+  dependencies:
+    "@truffle/contract" "^4.0.35"
+    ansi-colors "^3.2.3"
+    chai "^4.2.0"
+    chai-bn "^0.2.0"
+    ethjs-abi "^0.2.1"
+    lodash.flatten "^4.4.0"
+    semver "^5.6.0"
+    web3 "^1.2.1"
+    web3-utils "^1.2.1"
+
 "@resolver-engine/core@^0.2.1":
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/@resolver-engine/core/-/core-0.2.1.tgz#0d71803f6d3b8cb2e9ed481a1bf0ca5f5256d0c0"
@@ -59,6 +74,75 @@
     debug "^3.1.0"
     hosted-git-info "^2.6.0"
 
+"@sindresorhus/is@^0.14.0":
+  version "0.14.0"
+  resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"
+  integrity sha512-9NET910DNaIPngYnLLPeg+Ogzqsi9uM4mSboU5y6p8S5DzMTVEsJZrawi+BoDNUVBa2DhJqQYUFvMDfgU062LQ==
+
+"@szmarczak/http-timer@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@szmarczak/http-timer/-/http-timer-1.1.2.tgz#b1665e2c461a2cd92f4c1bbf50d5454de0d4b421"
+  integrity sha512-XIB2XbzHTN6ieIjfIMV9hlVcfPU26s2vafYWQcZHWXHOxiaRZYEDKEwdl129Zyg50+foYV2jCgtrqSA6qNuNSA==
+  dependencies:
+    defer-to-connect "^1.0.1"
+
+"@truffle/blockchain-utils@^0.0.15":
+  version "0.0.15"
+  resolved "https://registry.yarnpkg.com/@truffle/blockchain-utils/-/blockchain-utils-0.0.15.tgz#3b7662615e97e1f734ab0dcb868711573184b544"
+  integrity sha512-VvUk/073Xct8P3IarvKo8xOlHigO45Nl6qCbGYLCE7RQc9wArrxlfHAgztnwimC5D6JiNTXu6JU2Qiszb3Eptg==
+  dependencies:
+    "@truffle/provider" "^0.2.2"
+
+"@truffle/contract-schema@^3.0.19":
+  version "3.0.19"
+  resolved "https://registry.yarnpkg.com/@truffle/contract-schema/-/contract-schema-3.0.19.tgz#32e2a81501efc19c7567748877810a5e90f230bb"
+  integrity sha512-0fT3gBwJPCxO/B+k/xel8aKEGfvXm0nJ965KpCPEC6dpl+XHewJx6TZufiVmxuKTpOAytNfO/aDkQ8sjXs47Fw==
+  dependencies:
+    ajv "^6.10.0"
+    crypto-js "^3.1.9-1"
+    debug "^4.1.0"
+
+"@truffle/contract@^4.0.35":
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/@truffle/contract/-/contract-4.1.0.tgz#b3f20e21e390ad208b25f8396acb1b5b61312b89"
+  integrity sha512-CVAv7rvRtt6dS9zUB3zrWkbV2RbwWxGbSOq/33NMHCj+Envt+G2a6NIAexYADk6zLhHhCc1K2/wH7HElM3CKcQ==
+  dependencies:
+    "@truffle/blockchain-utils" "^0.0.15"
+    "@truffle/contract-schema" "^3.0.19"
+    "@truffle/error" "^0.0.8"
+    "@truffle/interface-adapter" "^0.3.3"
+    bignumber.js "^7.2.1"
+    ethereum-ens "^0.7.7"
+    ethers "^4.0.0-beta.1"
+    web3 "1.2.2"
+    web3-core-promievent "1.2.2"
+    web3-eth-abi "1.2.2"
+    web3-utils "1.2.2"
+
+"@truffle/error@^0.0.8":
+  version "0.0.8"
+  resolved "https://registry.yarnpkg.com/@truffle/error/-/error-0.0.8.tgz#dc94ca36393403449d4b7461bf9452c241e53ec1"
+  integrity sha512-x55rtRuNfRO1azmZ30iR0pf0OJ6flQqbax1hJz+Avk1K5fdmOv5cr22s9qFnwTWnS6Bw0jvJEoR0ITsM7cPKtQ==
+
+"@truffle/interface-adapter@^0.3.3":
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/@truffle/interface-adapter/-/interface-adapter-0.3.3.tgz#61305378cf81776769ef36c60d394e568ac4a2ee"
+  integrity sha512-l3I4WFTfnBSIfG96IOBRtAIE6AHDAxcOUJE7W5zh9hocQwzQlGWc2yEyyTcLa0656TTM8RxaZZ2S/KdHHMvCaw==
+  dependencies:
+    bn.js "^4.11.8"
+    ethers "^4.0.32"
+    lodash "^4.17.13"
+    web3 "1.2.2"
+
+"@truffle/provider@^0.2.2":
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/@truffle/provider/-/provider-0.2.2.tgz#768ad9f2e64a655277a0dbec03aeb9c1062906e3"
+  integrity sha512-0lN23hJzM6cb1IK4ZjRPHDEdwtcpRwhsfBLLOAzlOFlnFvCHlQWnb7K71mCE9LXrKqjQRDF1vjUpeiKccwoN8Q==
+  dependencies:
+    "@truffle/error" "^0.0.8"
+    "@truffle/interface-adapter" "^0.3.3"
+    web3 "1.2.2"
+
 "@types/bn.js@*":
   version "4.11.4"
   resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-4.11.4.tgz#a7bed5bdef9f16b25c92ba27745ab261374787d7"
@@ -88,6 +172,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.12.9.tgz#a07bfa74331471e1dc22a47eb72026843f7b95c8"
   integrity sha512-eajkMXG812/w3w4a1OcBlaTwsFPO5F7fJ/amy+tieQxEMWBlbV1JGSjkFM+zkHNf81Cad+dfIRA+IBkvmvdAeA==
 
+"@types/node@^12.6.1":
+  version "12.12.7"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.7.tgz#01e4ea724d9e3bd50d90c11fd5980ba317d8fa11"
+  integrity sha512-E6Zn0rffhgd130zbCbAr/JdXfXkoOUFAKNs/rF8qnafSJ8KYaA/j3oz7dcwal+lYjLA7xvdd5J4wdYpCTlP8+w==
+
 "@types/underscore@*":
   version "1.8.9"
   resolved "https://registry.yarnpkg.com/@types/underscore/-/underscore-1.8.9.tgz#fef41f800cd23db1b4f262ddefe49cd952d82323"
@@ -143,7 +232,7 @@ aes-js@^3.1.1:
   resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-3.1.2.tgz#db9aabde85d5caabbfc0d4f2a4446960f627146a"
   integrity sha512-e5pEa2kBnBOgR4Y/p20pskXI74UEz7de8ZGVo58asOtvSVG5YAbJeELPZxOmt+Bnz3rX753YKhfIn4X4l1PPRQ==
 
-ajv@^5.1.1, ajv@^5.3.0:
+ajv@^5.3.0:
   version "5.5.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
   integrity sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=
@@ -153,6 +242,16 @@ ajv@^5.1.1, ajv@^5.3.0:
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.3.0"
 
+ajv@^6.10.0:
+  version "6.10.2"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.10.2.tgz#d3cea04d6b017b2894ad69040fec8b623eb4bd52"
+  integrity sha512-TXtUUEYHuaTEbLZWIKUr5pmBuhDLy+8KYtPYdcV8qC+pOZL+NKqYwvWSRrVXHn+ZmRRAu8vJTAznH7Oag6RVRw==
+  dependencies:
+    fast-deep-equal "^2.0.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
 ajv@^6.6.1, ajv@^6.9.1:
   version "6.10.0"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.10.0.tgz#90d0d54439da587cd7e843bfb7045f50bd22bdf1"
@@ -912,6 +1011,11 @@ bluebird@^2.9.34:
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-2.11.0.tgz#534b9033c022c9579c56ba3b3e5a5caafbb650e1"
   integrity sha1-U0uQM8AiyVecVro7Plpcqvu2UOE=
 
+bluebird@^3.4.7:
+  version "3.7.1"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.7.1.tgz#df70e302b471d7473489acf26a93d63b53f874de"
+  integrity sha512-DdmyoGCleJnkbp3nkbxTLJ18rjDsE4yCggEwKNXkeV123sPNfOCYeDoeuOY+F2FrSjO1YXcTU+dsy96KMy+gcg==
+
 bluebird@^3.5.0:
   version "3.5.3"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.3.tgz#7d01c6f9616c9a51ab0f8c549a79dfe6ec33efa7"
@@ -1114,6 +1218,19 @@ bytes@3.0.0:
   resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.0.0.tgz#d32815404d689699f85a4ea4fa8755dd13a96048"
   integrity sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg=
 
+cacheable-request@^6.0.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/cacheable-request/-/cacheable-request-6.1.0.tgz#20ffb8bd162ba4be11e9567d823db651052ca912"
+  integrity sha512-Oj3cAGPCqOZX7Rz64Uny2GYAZNliQSqfbePrgAQ1wKAihYmCUnraBtJtKcGR4xz7wF+LoJC+ssFZvv5BgF9Igg==
+  dependencies:
+    clone-response "^1.0.2"
+    get-stream "^5.1.0"
+    http-cache-semantics "^4.0.0"
+    keyv "^3.0.0"
+    lowercase-keys "^2.0.0"
+    normalize-url "^4.1.0"
+    responselike "^1.0.2"
+
 caller-callsite@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/caller-callsite/-/caller-callsite-2.0.0.tgz#847e0fce0a223750a9a027c54b33731ad3154134"
@@ -1163,10 +1280,10 @@ caseless@~0.12.0:
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
   integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
 
-chai-bn@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/chai-bn/-/chai-bn-0.1.1.tgz#a8904b2dc878e5c094881f327c0029579ff2062b"
-  integrity sha512-e1npVXt3cQfZ6oQET9oP38vNj/4HeJ4ojeUpuC8YzhVbTJpIDqANVt7TKi7Dq9yKlHySk2FqbmiMih35iT4DYg==
+chai-bn@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/chai-bn/-/chai-bn-0.2.0.tgz#7da60617531e5a8bdf9fbd5d848e693b7405a5cb"
+  integrity sha512-h+XqIFikre13N3uiZSc50PZ0VztVjuD/Gytle07EUFkbd8z31tWp37DLAsR1dPozmOLA3yu4hi3IFjJDQ5CKBg==
 
 chai@^4.2.0:
   version "4.2.0"
@@ -1269,6 +1386,13 @@ cliui@^4.0.0:
     strip-ansi "^4.0.0"
     wrap-ansi "^2.0.0"
 
+clone-response@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/clone-response/-/clone-response-1.0.2.tgz#d1dc973920314df67fbeb94223b4ee350239e96b"
+  integrity sha1-0dyXOSAxTfZ/vrlCI7TuNQI56Ws=
+  dependencies:
+    mimic-response "^1.0.0"
+
 clone@^2.0.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
@@ -1509,6 +1633,14 @@ crypto-js@^3.1.9-1:
   resolved "https://registry.yarnpkg.com/crypto-js/-/crypto-js-3.1.9-1.tgz#fda19e761fc077e01ffbfdc6e9fdfc59e8806cd8"
   integrity sha1-/aGedh/Ad+Af+/3G6f38WeiAbNg=
 
+d@1, d@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/d/-/d-1.0.1.tgz#8698095372d58dbee346ffd0c7093f99f8f9eb5a"
+  integrity sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==
+  dependencies:
+    es5-ext "^0.10.50"
+    type "^1.0.1"
+
 dashdash@^1.12.0:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
@@ -1636,6 +1768,11 @@ deep-is@~0.1.3:
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
   integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
 
+defer-to-connect@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/defer-to-connect/-/defer-to-connect-1.1.0.tgz#b41bd7efa8508cef13f8456975f7a278c72833fd"
+  integrity sha512-WE2sZoctWm/v4smfCAdjYbrfS55JiMRdlY9ZubFhsYbteCK9+BvAx4YV7nPjYM6ZnX5BcoVKwfmyx9sIFTgQMQ==
+
 deferred-leveldown@~1.2.1:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/deferred-leveldown/-/deferred-leveldown-1.2.2.tgz#3acd2e0b75d1669924bc0a4b642851131173e1eb"
@@ -1830,6 +1967,32 @@ es-to-primitive@^1.2.0:
     is-date-object "^1.0.1"
     is-symbol "^1.0.2"
 
+es5-ext@^0.10.35, es5-ext@^0.10.50:
+  version "0.10.52"
+  resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.52.tgz#bb21777e919a04263736ded120a9d665f10ea63f"
+  integrity sha512-bWCbE9fbpYQY4CU6hJbJ1vSz70EClMlDgJ7BmwI+zEJhxrwjesZRPglGJlsZhu0334U3hI+gaspwksH9IGD6ag==
+  dependencies:
+    es6-iterator "~2.0.3"
+    es6-symbol "~3.1.2"
+    next-tick "~1.0.0"
+
+es6-iterator@~2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/es6-iterator/-/es6-iterator-2.0.3.tgz#a7de889141a05a94b0854403b2d0a0fbfa98f3b7"
+  integrity sha1-p96IkUGgWpSwhUQDstCg+/qY87c=
+  dependencies:
+    d "1"
+    es5-ext "^0.10.35"
+    es6-symbol "^3.1.1"
+
+es6-symbol@^3.1.1, es6-symbol@~3.1.2:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/es6-symbol/-/es6-symbol-3.1.3.tgz#bad5d3c1bcdac28269f4cb331e431c78ac705d18"
+  integrity sha512-NJ6Yn3FuDinBaBRWl/q5X/s4koRHBrgKAu+yGI6JCBeiu3qrcbJhwT2GeR/EXVfylRk8dpQVJoLEFhK+Mu31NA==
+  dependencies:
+    d "^1.0.1"
+    ext "^1.1.2"
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -1849,14 +2012,16 @@ eslint-scope@^4.0.3:
     estraverse "^4.1.1"
 
 eslint-utils@^1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-1.3.1.tgz#9a851ba89ee7c460346f97cf8939c7298827e512"
-  integrity sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==
+  version "1.4.3"
+  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-1.4.3.tgz#74fec7c54d0776b6f67e0251040b5806564e981f"
+  integrity sha512-fbBN5W2xdY45KulGXmLHZ3c3FHfVYmKg0IrAKGOkT/464PQsx2UeIzfz1RmEci+KLm1bBaAzZAh8+/E+XAeZ8Q==
+  dependencies:
+    eslint-visitor-keys "^1.1.0"
 
-eslint-visitor-keys@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
-  integrity sha512-qzm/XxIbxm/FHyH341ZrbnMUpe+5Bocte9xkmFMzPMjRaZMcXww+MpBptFvtU+79L362nqiLhekCxCxDPaUMBQ==
+eslint-visitor-keys@^1.0.0, eslint-visitor-keys@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.1.0.tgz#e2a82cea84ff246ad6fb57f9bde5b46621459ec2"
+  integrity sha512-8y9YjtM1JBJU/A9Kc+SbaOV4y29sSWckBwMHa+FGtVj5gN/sbnKDf6xJUl+8g7FAij9LVaP8C24DUiH/f/2Z9A==
 
 eslint@^5.6.0:
   version "5.16.0"
@@ -1970,7 +2135,7 @@ eth-block-tracker@^3.0.0:
     pify "^2.3.0"
     tape "^4.6.3"
 
-eth-ens-namehash@2.0.8:
+eth-ens-namehash@2.0.8, eth-ens-namehash@^2.0.0:
   version "2.0.8"
   resolved "https://registry.yarnpkg.com/eth-ens-namehash/-/eth-ens-namehash-2.0.8.tgz#229ac46eca86d52e0c991e7cb2aef83ff0f68bcf"
   integrity sha1-IprEbsqG1S4MmR58sq74P/D2i88=
@@ -2074,6 +2239,13 @@ eth-tx-summary@^3.1.2:
     treeify "^1.0.1"
     web3-provider-engine "^13.3.2"
 
+ethereum-bloom-filters@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/ethereum-bloom-filters/-/ethereum-bloom-filters-1.0.6.tgz#9cdebb3ec20de96ec4a434c6bad6ea5a513037aa"
+  integrity sha512-dE9CGNzgOOsdh7msZirvv8qjHtnHpvBlKe2647kM8v+yeF71IRso55jpojemvHV+jMjr48irPWxMRaHuOWzAFA==
+  dependencies:
+    js-sha3 "^0.8.0"
+
 ethereum-common@0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/ethereum-common/-/ethereum-common-0.2.0.tgz#13bf966131cce1eeade62a1b434249bb4cb120ca"
@@ -2084,6 +2256,18 @@ ethereum-common@^0.0.18:
   resolved "https://registry.yarnpkg.com/ethereum-common/-/ethereum-common-0.0.18.tgz#2fdc3576f232903358976eb39da783213ff9523f"
   integrity sha1-L9w1dvIykDNYl26znaeDIT/5Uj8=
 
+ethereum-ens@^0.7.7:
+  version "0.7.8"
+  resolved "https://registry.yarnpkg.com/ethereum-ens/-/ethereum-ens-0.7.8.tgz#102874541801507774fef21c9a626fabb1ed0630"
+  integrity sha512-HJBDmF5/abP/IIM6N7rGHmmlQ4yCKIVK4kzT/Mu05+eZn0i5ZlR25LTAE47SVZ7oyTBvOkNJhxhSkWRvjh7srg==
+  dependencies:
+    bluebird "^3.4.7"
+    eth-ens-namehash "^2.0.0"
+    js-sha3 "^0.5.7"
+    pako "^1.0.4"
+    underscore "^1.8.3"
+    web3 "^1.0.0-beta.34"
+
 "ethereumjs-abi@git+https://github.com/ethereumjs/ethereumjs-abi.git":
   version "0.6.6"
   resolved "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215"
@@ -2127,6 +2311,11 @@ ethereumjs-common@^1.1.0:
   resolved "https://registry.yarnpkg.com/ethereumjs-common/-/ethereumjs-common-1.1.0.tgz#5ec9086c314d619d8f05e79a0525829fcb0e93cb"
   integrity sha512-LUmYkKV/HcZbWRyu3OU9YOevsH3VJDXtI6kEd8VZweQec+JjDGKCmAVKUyzhYUHqxRJu7JNALZ3A/b3NXOP6tA==
 
+ethereumjs-common@^1.3.1, ethereumjs-common@^1.3.2:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/ethereumjs-common/-/ethereumjs-common-1.4.0.tgz#a940685f88f3c2587e4061630fe720b089c965b8"
+  integrity sha512-ser2SAplX/YI5W2AnzU8wmSjKRy4KQd4uxInJ36BzjS3m18E/B9QedPUIresZN1CSEQb/RgNQ2gN7C/XbpTafA==
+
 ethereumjs-tx@^1.1.1, ethereumjs-tx@^1.2.0, ethereumjs-tx@^1.2.2, ethereumjs-tx@^1.3.3, ethereumjs-tx@^1.3.7:
   version "1.3.7"
   resolved "https://registry.yarnpkg.com/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz#88323a2d875b10549b8347e09f4862b546f3d89a"
@@ -2135,6 +2324,14 @@ ethereumjs-tx@^1.1.1, ethereumjs-tx@^1.2.0, ethereumjs-tx@^1.2.2, ethereumjs-tx@
     ethereum-common "^0.0.18"
     ethereumjs-util "^5.0.0"
 
+ethereumjs-tx@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ethereumjs-tx/-/ethereumjs-tx-2.1.1.tgz#7d204e2b319156c9bc6cec67e9529424a26e8ccc"
+  integrity sha512-QtVriNqowCFA19X9BCRPMgdVNJ0/gMBS91TQb1DfrhsbR748g4STwxZptFAwfqehMyrF8rDwB23w87PQwru0wA==
+  dependencies:
+    ethereumjs-common "^1.3.1"
+    ethereumjs-util "^6.0.0"
+
 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"
@@ -2226,6 +2423,22 @@ ethers@4.0.0-beta.1:
     uuid "2.0.1"
     xmlhttprequest "1.8.0"
 
+ethers@4.0.0-beta.3:
+  version "4.0.0-beta.3"
+  resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.0-beta.3.tgz#15bef14e57e94ecbeb7f9b39dd0a4bd435bc9066"
+  integrity sha512-YYPogooSknTwvHg3+Mv71gM/3Wcrx+ZpCzarBj3mqs9njjRkrOo2/eufzhHloOCo3JSoNI4TQJJ6yU5ABm3Uog==
+  dependencies:
+    "@types/node" "^10.3.2"
+    aes-js "3.0.0"
+    bn.js "^4.4.0"
+    elliptic "6.3.3"
+    hash.js "1.1.3"
+    js-sha3 "0.5.7"
+    scrypt-js "2.0.3"
+    setimmediate "1.0.4"
+    uuid "2.0.1"
+    xmlhttprequest "1.8.0"
+
 ethers@^4.0.0-beta.1, ethers@^4.0.27:
   version "4.0.27"
   resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.27.tgz#e570b0da9d805ad65c83d81919abe02b2264c6bf"
@@ -2258,6 +2471,22 @@ ethers@^4.0.20:
     uuid "2.0.1"
     xmlhttprequest "1.8.0"
 
+ethers@^4.0.32:
+  version "4.0.39"
+  resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.39.tgz#5ce9dfffedb03936415743f63b37d96280886a47"
+  integrity sha512-QVtC8TTUgTrnlQjQvdFJ7fkSWKwp8HVTbKRmrdbVryrPzJHMTf3WSeRNvLF2enGyAFtyHJyFNnjN0fSshcEr9w==
+  dependencies:
+    "@types/node" "^10.3.2"
+    aes-js "3.0.0"
+    bn.js "^4.4.0"
+    elliptic "6.3.3"
+    hash.js "1.1.3"
+    js-sha3 "0.5.7"
+    scrypt-js "2.0.4"
+    setimmediate "1.0.4"
+    uuid "2.0.1"
+    xmlhttprequest "1.8.0"
+
 ethjs-abi@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/ethjs-abi/-/ethjs-abi-0.2.1.tgz#e0a7a93a7e81163a94477bad56ede524ab6de533"
@@ -2293,6 +2522,11 @@ eventemitter3@3.1.0, eventemitter3@^3.1.0:
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.0.tgz#090b4d6cdbd645ed10bf750d4b5407942d7ba163"
   integrity sha512-ivIvhpq/Y0uSjcHDcOIccjmYjGLcP09MFGE7ysAwkAvkXfpZlC985pH2/ui64DKazbTW/4kN3yqozUxlXzI6cA==
 
+eventemitter3@3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.2.tgz#2d3d48f9c346698fce83a85d7d664e98535df6e7"
+  integrity sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q==
+
 events@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/events/-/events-3.0.0.tgz#9a0a0dfaf62893d92b875b8f2698ca4114973e88"
@@ -2368,6 +2602,13 @@ express@^4.14.0:
     utils-merge "1.0.1"
     vary "~1.1.2"
 
+ext@^1.1.2:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/ext/-/ext-1.2.0.tgz#8dd8d2dd21bcced3045be09621fa0cbf73908ba4"
+  integrity sha512-0ccUQK/9e3NreLFg6K6np8aPyRgwycx+oFGtfx1dSp7Wj00Ozw9r05FgBRlzjf2XBM7LAzwgLyDscRrtSU91hA==
+  dependencies:
+    type "^2.0.0"
+
 extend@~3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
@@ -2666,13 +2907,20 @@ get-stream@^3.0.0:
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
   integrity sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=
 
-get-stream@^4.0.0:
+get-stream@^4.0.0, get-stream@^4.1.0:
   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-stream@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-5.1.0.tgz#01203cdc92597f9b909067c3e656cc1f4d3c4dc9"
+  integrity sha512-EXr1FOzrzTfGeL0gQdeFEvOMm2mzMOglyiOXSTpPC+iAjAKftbr3jpCMWynogwYnM+eSj9sHGc6wjIcDvYiygw==
+  dependencies:
+    pump "^3.0.0"
+
 getpass@^0.1.1:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
@@ -2742,6 +2990,23 @@ got@7.1.0, got@^7.1.0:
     url-parse-lax "^1.0.0"
     url-to-options "^1.0.1"
 
+got@9.6.0:
+  version "9.6.0"
+  resolved "https://registry.yarnpkg.com/got/-/got-9.6.0.tgz#edf45e7d67f99545705de1f7bbeeeb121765ed85"
+  integrity sha512-R7eWptXuGYxwijs0eV+v3o6+XH1IqVK8dJOEecQfTmkncw9AV4dcw/Dhxi8MdlqPthxxpZyizMzyg8RTmEsG+Q==
+  dependencies:
+    "@sindresorhus/is" "^0.14.0"
+    "@szmarczak/http-timer" "^1.1.2"
+    cacheable-request "^6.0.0"
+    decompress-response "^3.3.0"
+    duplexer3 "^0.1.4"
+    get-stream "^4.1.0"
+    lowercase-keys "^1.0.1"
+    mimic-response "^1.0.1"
+    p-cancelable "^1.0.0"
+    to-readable-stream "^1.0.0"
+    url-parse-lax "^3.0.0"
+
 graceful-fs@^4.1.10, graceful-fs@^4.1.9:
   version "4.1.15"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.15.tgz#ffb703e1066e8a0eeaa4c8b80ba9253eeefbfb00"
@@ -2886,6 +3151,11 @@ hosted-git-info@^2.1.4, hosted-git-info@^2.6.0:
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.7.1.tgz#97f236977bd6e125408930ff6de3eec6281ec047"
   integrity sha512-7T/BxH19zbcCTa8XkMlbK5lTo1WtgkFi3GvdWEyNuc4Vex7/9Dqbnpsf4JMydcfj9HCg4zUWFTL3Za6lapg5/w==
 
+http-cache-semantics@^4.0.0:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/http-cache-semantics/-/http-cache-semantics-4.0.3.tgz#495704773277eeef6e43f9ab2c2c7d259dda25c5"
+  integrity sha512-TcIMG3qeVLgDr1TEd2XvHaTnMPwYQUQMIBLy+5pLSDKYFc7UIqj39w8EGzZkaxoLv/l2K8HaI0t5AVA+YYgUew==
+
 http-errors@1.6.3, http-errors@~1.6.2, http-errors@~1.6.3:
   version "1.6.3"
   resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.6.3.tgz#8b55680bb4be283a0b5bf4ea2e38580be1d9320d"
@@ -3200,6 +3470,11 @@ js-sha3@^0.3.1:
   resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.3.1.tgz#86122802142f0828502a0d1dee1d95e253bb0243"
   integrity sha1-hhIoAhQvCChQKg0d7h2V4lO7AkM=
 
+js-sha3@^0.8.0:
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.8.0.tgz#b9b7a5da73afad7dedd0f8c463954cbde6818840"
+  integrity sha512-gF1cRrHhIzNfToc802P800N8PpXS+evLLXfsVpowqmAFR9uwbi89WvXg2QspOmXL8QL86J4T1EpFu+yUkwJY3Q==
+
 "js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
@@ -3233,6 +3508,11 @@ jsesc@~0.5.0:
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
   integrity sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=
 
+json-buffer@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/json-buffer/-/json-buffer-3.0.0.tgz#5b1f397afc75d677bde8bcfc0e47e1f9a3d9a898"
+  integrity sha1-Wx85evx11ne96Lz8Dkfh+aPZqJg=
+
 json-parse-better-errors@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
@@ -3346,6 +3626,13 @@ keccakjs@^0.2.1:
     browserify-sha3 "^0.0.1"
     sha3 "^1.1.0"
 
+keyv@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/keyv/-/keyv-3.1.0.tgz#ecc228486f69991e49e9476485a5be1e8fc5c4d9"
+  integrity sha512-9ykJ/46SN/9KPM/sichzQ7OvXyGDYKGTaDlKMGCAlg2UK8KRy4jb0d8sFc+0Tt0YYnThq8X2RZgCg74RPxgcVA==
+  dependencies:
+    json-buffer "3.0.0"
+
 klaw@^1.0.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/klaw/-/klaw-1.3.1.tgz#4088433b46b3b1ba259d78785d8e96f73ba02439"
@@ -3562,6 +3849,11 @@ lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.4:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
   integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
 
+lodash@^4.17.13:
+  version "4.17.15"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
+  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+
 loose-envify@^1.0.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
@@ -3569,11 +3861,16 @@ loose-envify@^1.0.0:
   dependencies:
     js-tokens "^3.0.0 || ^4.0.0"
 
-lowercase-keys@^1.0.0:
+lowercase-keys@^1.0.0, lowercase-keys@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-1.0.1.tgz#6f9e30b47084d971a7c820ff15a6c5167b74c26f"
   integrity sha512-G2Lj61tXDnVFFOi8VZds+SoQjtQC3dgokKdDG2mTm1tx4m50NUHBOZSBwQQHyy0V12A0JTG4icfZQH+xPyh8VA==
 
+lowercase-keys@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-2.0.0.tgz#2603e78b7b4b0006cbca2fbcc8a3202558ac9479"
+  integrity sha512-tqNXrS78oMOE73NMxK4EMLQsQowWf8jKooH9g7xPavRT706R6bkQJ6DY2Te7QukaZsulxa30wQ7bk0pm4XiHmA==
+
 lru-cache@^4.0.1:
   version "4.1.5"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.5.tgz#8bbe50ea85bed59bc9e33dcab8235ee9bcf443cd"
@@ -3707,7 +4004,7 @@ mimic-fn@^2.0.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
   integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
 
-mimic-response@^1.0.0:
+mimic-response@^1.0.0, mimic-response@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
   integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
@@ -3840,6 +4137,11 @@ nan@^2.11.0, nan@^2.2.1:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.12.1.tgz#7b1aa193e9aa86057e3c7bbd0ac448e770925552"
   integrity sha512-JY7V6lRkStKcKTvHO5NVSQRv+RV+FIL5pvDoLiAtSL9pKlC5x9PKQcZDsq7m4FO4d57mkhC6Z+QhAh3Jdk5JFw==
 
+nan@^2.14.0:
+  version "2.14.0"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.0.tgz#7818f722027b2459a86f0295d434d1fc2336c52c"
+  integrity sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==
+
 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"
@@ -3855,6 +4157,11 @@ negotiator@0.6.1:
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
   integrity sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk=
 
+next-tick@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
+  integrity sha1-yobR/ogoFpsBICCOPchCS524NCw=
+
 nice-try@^1.0.4:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
@@ -3883,6 +4190,11 @@ normalize-package-data@^2.3.2:
     semver "2 || 3 || 4 || 5"
     validate-npm-package-license "^3.0.1"
 
+normalize-url@^4.1.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-4.5.0.tgz#453354087e6ca96957bd8f5baf753f5982142129"
+  integrity sha512-2s47yzUxdexf1OhyRi4Em83iQk0aPvwTddtFz4hnSSw9dCEsLEGf6SwIO8ss/19S9iBb5sJaOuTvTGDeZI00BQ==
+
 npm-run-path@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
@@ -3935,6 +4247,13 @@ oboe@2.1.3:
   dependencies:
     http-https "^1.0.0"
 
+oboe@2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/oboe/-/oboe-2.1.4.tgz#20c88cdb0c15371bb04119257d4fdd34b0aa49f6"
+  integrity sha1-IMiM2wwVNxuwQRklfU/dNLCqSfY=
+  dependencies:
+    http-https "^1.0.0"
+
 on-finished@~2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
@@ -3961,22 +4280,16 @@ openzeppelin-eth@^2.0.2:
   resolved "https://registry.yarnpkg.com/openzeppelin-eth/-/openzeppelin-eth-2.1.3.tgz#d9a4d7830ca8e4c3bc44164179a661112655e8b2"
   integrity sha512-k1Yv3V7u369ERXV0xf+ru3TH+ZopFYY0E1M+4O32Q+0b4XLm2acVBaUvbuuqYMkUjKhSfu8HuPpXL7OWMEJWRw==
 
+openzeppelin-solidity@^2.2.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/openzeppelin-solidity/-/openzeppelin-solidity-2.4.0.tgz#5f0a7b30571c45493449166e57b947203415349d"
+  integrity sha512-533gc5jkspxW5YT0qJo02Za5q1LHwXK9CJCc48jNj/22ncNM/3M/3JfWLqfpB90uqLwOKOovpl0JfaMQTR+gXQ==
+
 openzeppelin-solidity@~1.10.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/openzeppelin-solidity/-/openzeppelin-solidity-1.10.0.tgz#d77eee6653f5958d051318a61ba0b436f92216c0"
   integrity sha512-igkrumQQ2lrN2zjeQV4Dnb0GpTBj1fzMcd8HPyBUqwI0hhuscX/HzXiqKT6gFQl1j9Wy/ppVVs9fqL/foF7Gmg==
 
-openzeppelin-test-helpers@^0.3.2:
-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/openzeppelin-test-helpers/-/openzeppelin-test-helpers-0.3.2.tgz#87552090a36751428be513afa349e3a59a40ee1e"
-  integrity sha512-PFTIzyYswBt5IiZu/qayIjnS1HJ+Mr0ekVzLfube/qcUGvoA4Ru5SJdit2FYKljaPdiyvLD1jYJJecA50A2RtA==
-  dependencies:
-    ansi-colors "^3.2.3"
-    chai-bn "^0.1.1"
-    ethjs-abi "^0.2.1"
-    semver "^5.6.0"
-    truffle-contract "^4.0.8"
-
 optionator@^0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/optionator/-/optionator-0.8.2.tgz#364c5e409d3f4d6301d6c0b4c05bba50180aeb64"
@@ -4034,6 +4347,11 @@ p-cancelable@^0.3.0:
   resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-0.3.0.tgz#b9e123800bcebb7ac13a479be195b507b98d30fa"
   integrity sha512-RVbZPLso8+jFeq1MfNvgXtCRED2raz/dKpacfTNxsx6pLEpEomM7gah6VeHSYV3+vo0OAi4MkArtQcWWXuQoyw==
 
+p-cancelable@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-1.1.0.tgz#d078d15a3af409220c886f1d9a0ca2e441ab26cc"
+  integrity sha512-s73XxOZ4zpt1edZYZzvhqFa6uvQc1vwUa0K0BdtIZgQMAJj9IbebH+JkgKZc9h+B05PKHLOTl4ajG1BmNrVZlw==
+
 p-defer@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-defer/-/p-defer-1.0.0.tgz#9f6eb182f6c9aa8cd743004a7d4f96b196b0fb0c"
@@ -4094,6 +4412,11 @@ p-try@^2.0.0:
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
   integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
 
+pako@^1.0.4:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.10.tgz#4328badb5086a426aa90f541977d4955da5c9732"
+  integrity sha512-0DTvPVU3ed8+HNXOu5Bs+o//Mbdj9VNQMUOe9oKCwh8l0GNwpTDMKCWbRjgtD291AWnkAgkqA/LOnQS8AmS1tw==
+
 parent-module@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/parent-module/-/parent-module-1.0.1.tgz#691d2709e78c79fae3a156622452d00762caaaa2"
@@ -4249,6 +4572,11 @@ prepend-http@^1.0.1:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
+prepend-http@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-2.0.0.tgz#e92434bfa5ea8c19f41cdfd401d741a3c819d897"
+  integrity sha1-6SQ0v6XqjBn0HN/UAddBo8gZ2Jc=
+
 prettier@^1.14.3:
   version "1.17.0"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.17.0.tgz#53b303676eed22cc14a9f0cec09b477b3026c008"
@@ -4366,6 +4694,13 @@ randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5, randombytes@^2.0.6:
   dependencies:
     safe-buffer "^5.1.0"
 
+randombytes@^2.1.0:
+  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"
@@ -4578,6 +4913,13 @@ resolve@~1.10.0:
   dependencies:
     path-parse "^1.0.6"
 
+responselike@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/responselike/-/responselike-1.0.2.tgz#918720ef3b631c5642be068f15ade5a46f4ba1e7"
+  integrity sha1-kYcg7ztjHFZCvgaPFa3lpG9Loec=
+  dependencies:
+    lowercase-keys "^1.0.0"
+
 restore-cursor@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-2.0.0.tgz#9f7ee287f82fd326d4fd162923d62129eee0dfaf"
@@ -4679,6 +5021,14 @@ scrypt-js@2.0.4:
   resolved "https://registry.yarnpkg.com/scrypt-js/-/scrypt-js-2.0.4.tgz#32f8c5149f0797672e551c07e230f834b6af5f16"
   integrity sha512-4KsaGcPnuhtCZQCxFxN3GVYIhKFPTdLd8PLC552XwbMndtD0cjRFAhDuuydXQ0h08ZfPgzqe6EKHozpuH74iDw==
 
+"scrypt-shim@github:web3-js/scrypt-shim":
+  version "0.1.0"
+  uid be5e616323a8b5e568788bf94d03c1b8410eac54
+  resolved "https://codeload.github.com/web3-js/scrypt-shim/tar.gz/be5e616323a8b5e568788bf94d03c1b8410eac54"
+  dependencies:
+    scryptsy "^2.1.0"
+    semver "^6.3.0"
+
 scrypt.js@0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/scrypt.js/-/scrypt.js-0.2.0.tgz#af8d1465b71e9990110bedfc593b9479e03a8ada"
@@ -4710,6 +5060,11 @@ scryptsy@^1.2.1:
   dependencies:
     pbkdf2 "^3.0.3"
 
+scryptsy@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/scryptsy/-/scryptsy-2.1.0.tgz#8d1e8d0c025b58fdd25b6fa9a0dc905ee8faa790"
+  integrity sha512-1CdSqHQowJBnMAFyPEBRfqag/YP9OF394FV+4YREIJX4ljD7OxvQRDayyoyyCk+senRjSkP6VnUNQmVQqB6g7w==
+
 secp256k1@^3.0.1:
   version "3.6.2"
   resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.6.2.tgz#da835061c833c74a12f75c73d2ec2e980f00dc1f"
@@ -4746,6 +5101,11 @@ semver@^5.5.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.0.tgz#790a7cf6fea5459bac96110b29b60412dc8ff96b"
   integrity sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==
 
+semver@^6.3.0:
+  version "6.3.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
+  integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
+
 semver@~5.4.1:
   version "5.4.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
@@ -5157,7 +5517,7 @@ swarm-js@0.1.37:
     tar.gz "^1.0.5"
     xhr-request-promise "^0.1.2"
 
-swarm-js@^0.1.39:
+swarm-js@0.1.39, swarm-js@^0.1.39:
   version "0.1.39"
   resolved "https://registry.yarnpkg.com/swarm-js/-/swarm-js-0.1.39.tgz#79becb07f291d4b2a178c50fee7aa6e10342c0e8"
   integrity sha512-QLMqL2rzF6n5s50BptyD6Oi0R1aWlJC5Y17SRIVXRj6OR1DRIPM7nepvrxxkjA1zNzFz6mUOMjfeqeDaWB7OOg==
@@ -5304,6 +5664,11 @@ to-fast-properties@^1.0.3:
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
   integrity sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=
 
+to-readable-stream@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/to-readable-stream/-/to-readable-stream-1.0.0.tgz#ce0aa0c2f3df6adf852efb404a783e77c0475771"
+  integrity sha512-Iq25XBt6zD5npPhlLVXGFN3/gyR2/qODcKNNyTMd4vbm39HUaOiAM4PMq0eMVC/Tkxz+Zjdsc55g9yyz+Yq00Q==
+
 topo@3.x.x:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/topo/-/topo-3.0.3.tgz#d5a67fb2e69307ebeeb08402ec2a2a6f5f7ad95c"
@@ -5339,41 +5704,6 @@ trim@0.0.1:
   resolved "https://registry.yarnpkg.com/trim/-/trim-0.0.1.tgz#5858547f6b290757ee95cccc666fb50084c460dd"
   integrity sha1-WFhUf2spB1fulczMZm+1AITEYN0=
 
-truffle-blockchain-utils@^0.0.8:
-  version "0.0.8"
-  resolved "https://registry.yarnpkg.com/truffle-blockchain-utils/-/truffle-blockchain-utils-0.0.8.tgz#09995c36016a54092b337f237c3dc1a3dca12341"
-  integrity sha512-4dbgqd4GrloKNLiaXACiymE3R2PsNFOlbgOh/CGkQVLArtcbgBAl7Fg2l5yVfDV8dtOFWHddj/2UkY25KY1+Dw==
-
-truffle-contract-schema@^3.0.6:
-  version "3.0.6"
-  resolved "https://registry.yarnpkg.com/truffle-contract-schema/-/truffle-contract-schema-3.0.6.tgz#d28c43ccbc15524a2be81326ccb8c036332f7371"
-  integrity sha512-oAMPr/ecr06ViJMSatfp1VpbDNul0Q1dSrFkWSF4/6WWK4orhNL90A8uhtEt61doLz5n0Yjf59KWE0p7qToPXw==
-  dependencies:
-    ajv "^5.1.1"
-    crypto-js "^3.1.9-1"
-    debug "^4.1.0"
-
-truffle-contract@^4.0.8:
-  version "4.0.11"
-  resolved "https://registry.yarnpkg.com/truffle-contract/-/truffle-contract-4.0.11.tgz#587d0e032c33ad320b7e12f1093eb789c62a8275"
-  integrity sha512-lzKFdLngTSt7MQMOvsUhOEPUjagSbGVkhQm7rSant4Y/VSWIppL3GXqpTOzdcOJMHgL9iYlMEm42+pHXq6DZxg==
-  dependencies:
-    bignumber.js "^7.2.1"
-    ethers "^4.0.0-beta.1"
-    truffle-blockchain-utils "^0.0.8"
-    truffle-contract-schema "^3.0.6"
-    truffle-error "^0.0.4"
-    truffle-interface-adapter "^0.1.2"
-    web3 "1.0.0-beta.37"
-    web3-core-promievent "1.0.0-beta.37"
-    web3-eth-abi "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
-
-truffle-error@^0.0.4:
-  version "0.0.4"
-  resolved "https://registry.yarnpkg.com/truffle-error/-/truffle-error-0.0.4.tgz#c3ff027570c26ae1f20db78637902497857f898f"
-  integrity sha512-hER0TNR4alBIhUp7SNrZRRiZtM/MBx+xBdM9qXP0tC3YASFmhNAxPuOyB8JDHFRNbDx12K7nvaqmyYGsI5c8BQ==
-
 truffle-flattener@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/truffle-flattener/-/truffle-flattener-1.3.0.tgz#a5b0340897e32cf8389fea105b52fa93c335f04c"
@@ -5394,14 +5724,6 @@ truffle-hdwallet-provider@^1.0.6:
     bindings "^1.3.1"
     websocket "^1.0.28"
 
-truffle-interface-adapter@^0.1.2:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/truffle-interface-adapter/-/truffle-interface-adapter-0.1.2.tgz#b544e726a3a0833911ce6dadb1197cef53ad801b"
-  integrity sha512-1+pZprFU94mN8ydy4wVI2reW4iELDmsUADpa2ti++HwsX/T02yHK5+GxK3wQ9lXglRiI/B694fKFbHcv3t+Vxg==
-  dependencies:
-    bn.js "^4.11.8"
-    web3 "1.0.0-beta.37"
-
 truffle-privatekey-provider@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/truffle-privatekey-provider/-/truffle-privatekey-provider-1.1.0.tgz#92faaa2679df90d14e3c541c2d94555da34d2902"
@@ -5462,6 +5784,16 @@ type-is@~1.6.16:
     media-typer "0.3.0"
     mime-types "~2.1.18"
 
+type@^1.0.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/type/-/type-1.2.0.tgz#848dd7698dafa3e54a6c479e759c4bc3f18847a0"
+  integrity sha512-+5nt5AAniqsCnu2cEQQdpzCAh33kVx8n0VoFidKpB1dVVLAN/F+bgVOqOJqOnEnrhp222clB5p3vUlD+1QAnfg==
+
+type@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/type/-/type-2.0.0.tgz#5f16ff6ef2eb44f260494dae271033b29c09a9c3"
+  integrity sha512-KBt58xCHry4Cejnc2ISQAF7QY+ORngsWfxezO68+12hKV6lQY8P/psIkcbjeHWn7MqcgciWJyCCevFMJdIXpow==
+
 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"
@@ -5492,6 +5824,11 @@ underscore@1.8.3:
   resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.8.3.tgz#4f3fb53b106e6097fcf9cb4109f2a5e9bdfa5022"
   integrity sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI=
 
+underscore@1.9.1, underscore@^1.8.3:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.9.1.tgz#06dce34a0e68a7babc29b365b8e74b8925203961"
+  integrity sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg==
+
 universalify@^0.1.0:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
@@ -5516,6 +5853,13 @@ url-parse-lax@^1.0.0:
   dependencies:
     prepend-http "^1.0.1"
 
+url-parse-lax@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/url-parse-lax/-/url-parse-lax-3.0.0.tgz#16b5cafc07dbe3676c1b1999177823d6503acb0c"
+  integrity sha1-FrXK/Afb42dsGxmZF3gj1lA6yww=
+  dependencies:
+    prepend-http "^2.0.0"
+
 url-parse@1.4.4:
   version "1.4.4"
   resolved "https://registry.yarnpkg.com/url-parse/-/url-parse-1.4.4.tgz#cac1556e95faa0303691fec5cf9d5a1bc34648f8"
@@ -5539,7 +5883,7 @@ utf8@2.1.1:
   resolved "https://registry.yarnpkg.com/utf8/-/utf8-2.1.1.tgz#2e01db02f7d8d0944f77104f1609eb0c304cf768"
   integrity sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g=
 
-utf8@^3.0.0:
+utf8@3.0.0, utf8@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/utf8/-/utf8-3.0.0.tgz#f052eed1364d696e769ef058b183df88c87f69d1"
   integrity sha512-E8VjFIQ/TyQgp+TZfS6l8yp/xWppSAHzidGiRrqe4bK4XP9pTRyKFgGJpO3SN7zdX4DeomTrwaseCHovfpFcqQ==
@@ -5616,6 +5960,16 @@ web3-bzz@1.0.0-beta.52:
     lodash "^4.17.11"
     swarm-js "^0.1.39"
 
+web3-bzz@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-bzz/-/web3-bzz-1.2.2.tgz#a3b9f613c49fd3e120e0997088a73557d5adb724"
+  integrity sha512-b1O2ObsqUN1lJxmFSjvnEC4TsaCbmh7Owj3IAIWTKqL9qhVgx7Qsu5O9cD13pBiSPNZJ68uJPaKq380QB4NWeA==
+  dependencies:
+    "@types/node" "^10.12.18"
+    got "9.6.0"
+    swarm-js "0.1.39"
+    underscore "1.9.1"
+
 web3-core-helpers@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.0.0-beta.37.tgz#04ec354b7f5c57234c309eea2bda9bf1f2fe68ba"
@@ -5635,6 +5989,15 @@ web3-core-helpers@1.0.0-beta.52:
     web3-eth-iban "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-core-helpers@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.2.2.tgz#484974f4bd4a487217b85b0d7cfe841af0907619"
+  integrity sha512-HJrRsIGgZa1jGUIhvGz4S5Yh6wtOIo/TMIsSLe+Xay+KVnbseJpPprDI5W3s7H2ODhMQTbogmmUFquZweW2ImQ==
+  dependencies:
+    underscore "1.9.1"
+    web3-eth-iban "1.2.2"
+    web3-utils "1.2.2"
+
 web3-core-method@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.0.0-beta.37.tgz#53d148e63f818b23461b26307afdfbdaa9457744"
@@ -5655,6 +6018,17 @@ web3-core-method@1.0.0-beta.52:
     eventemitter3 "3.1.0"
     lodash "^4.17.11"
 
+web3-core-method@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.2.2.tgz#d4fe2bb1945b7152e5f08e4ea568b171132a1e56"
+  integrity sha512-szR4fDSBxNHaF1DFqE+j6sFR/afv9Aa36OW93saHZnrh+iXSrYeUUDfugeNcRlugEKeUCkd4CZylfgbK2SKYJA==
+  dependencies:
+    underscore "1.9.1"
+    web3-core-helpers "1.2.2"
+    web3-core-promievent "1.2.2"
+    web3-core-subscriptions "1.2.2"
+    web3-utils "1.2.2"
+
 web3-core-promievent@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.0.0-beta.37.tgz#4e51c469d0a7ac0a969885a4dbcde8504abe5b02"
@@ -5663,6 +6037,14 @@ web3-core-promievent@1.0.0-beta.37:
     any-promise "1.3.0"
     eventemitter3 "1.1.1"
 
+web3-core-promievent@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.2.2.tgz#3b60e3f2a0c96db8a891c927899d29d39e66ab1c"
+  integrity sha512-tKvYeT8bkUfKABcQswK6/X79blKTKYGk949urZKcLvLDEaWrM3uuzDwdQT3BNKzQ3vIvTggFPX9BwYh0F1WwqQ==
+  dependencies:
+    any-promise "1.3.0"
+    eventemitter3 "3.1.2"
+
 web3-core-requestmanager@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.0.0-beta.37.tgz#721a75df5920621bff42d9d74f7a64413675d56b"
@@ -5674,6 +6056,17 @@ web3-core-requestmanager@1.0.0-beta.37:
     web3-providers-ipc "1.0.0-beta.37"
     web3-providers-ws "1.0.0-beta.37"
 
+web3-core-requestmanager@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.2.2.tgz#667ba9ac724c9c76fa8965ae8a3c61f66e68d8d6"
+  integrity sha512-a+gSbiBRHtHvkp78U2bsntMGYGF2eCb6219aMufuZWeAZGXJ63Wc2321PCbA8hF9cQrZI4EoZ4kVLRI4OF15Hw==
+  dependencies:
+    underscore "1.9.1"
+    web3-core-helpers "1.2.2"
+    web3-providers-http "1.2.2"
+    web3-providers-ipc "1.2.2"
+    web3-providers-ws "1.2.2"
+
 web3-core-subscriptions@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.0.0-beta.37.tgz#40de5e2490cc05b15faa8f935c97fd48d670cd9a"
@@ -5692,6 +6085,15 @@ web3-core-subscriptions@1.0.0-beta.52:
     eventemitter3 "^3.1.0"
     lodash "^4.17.11"
 
+web3-core-subscriptions@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.2.2.tgz#bf4ba23a653a003bdc3551649958cc0b080b068e"
+  integrity sha512-QbTgigNuT4eicAWWr7ahVpJyM8GbICsR1Ys9mJqzBEwpqS+RXTRVSkwZ2IsxO+iqv6liMNwGregbJLq4urMFcQ==
+  dependencies:
+    eventemitter3 "3.1.2"
+    underscore "1.9.1"
+    web3-core-helpers "1.2.2"
+
 web3-core@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.0.0-beta.37.tgz#66c2c7000772c9db36d737ada31607ace09b7e90"
@@ -5713,6 +6115,18 @@ web3-core@1.0.0-beta.52:
     lodash "^4.17.11"
     web3-utils "1.0.0-beta.52"
 
+web3-core@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.2.2.tgz#334b99c8222ef9cfd0339e27352f0b58ea789a2f"
+  integrity sha512-miHAX3qUgxV+KYfaOY93Hlc3kLW2j5fH8FJy6kSxAv+d4d5aH0wwrU2IIoJylQdT+FeenQ38sgsCnFu9iZ1hCQ==
+  dependencies:
+    "@types/bn.js" "^4.11.4"
+    "@types/node" "^12.6.1"
+    web3-core-helpers "1.2.2"
+    web3-core-method "1.2.2"
+    web3-core-requestmanager "1.2.2"
+    web3-utils "1.2.2"
+
 web3-eth-abi@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.0.0-beta.37.tgz#55592fa9cd2427d9f0441d78f3b8d0c1359a2a24"
@@ -5732,6 +6146,15 @@ web3-eth-abi@1.0.0-beta.52:
     lodash "^4.17.11"
     web3-utils "1.0.0-beta.52"
 
+web3-eth-abi@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.2.2.tgz#d5616d88a90020f894763423a9769f2da11fe37a"
+  integrity sha512-Yn/ZMgoOLxhTVxIYtPJ0eS6pnAnkTAaJgUJh1JhZS4ekzgswMfEYXOwpMaD5eiqPJLpuxmZFnXnBZlnQ1JMXsw==
+  dependencies:
+    ethers "4.0.0-beta.3"
+    underscore "1.9.1"
+    web3-utils "1.2.2"
+
 web3-eth-accounts@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.0.0-beta.37.tgz#0a5a9f14a6c3bd285e001c15eb3bb38ffa4b5204"
@@ -5765,6 +6188,24 @@ web3-eth-accounts@1.0.0-beta.52:
     web3-providers "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-eth-accounts@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.2.2.tgz#c187e14bff6baa698ac352220290222dbfd332e5"
+  integrity sha512-KzHOEyXOEZ13ZOkWN3skZKqSo5f4Z1ogPFNn9uZbKCz+kSp+gCAEKxyfbOsB/JMAp5h7o7pb6eYsPCUBJmFFiA==
+  dependencies:
+    any-promise "1.3.0"
+    crypto-browserify "3.12.0"
+    eth-lib "0.2.7"
+    ethereumjs-common "^1.3.2"
+    ethereumjs-tx "^2.1.1"
+    scrypt-shim "github:web3-js/scrypt-shim"
+    underscore "1.9.1"
+    uuid "3.3.2"
+    web3-core "1.2.2"
+    web3-core-helpers "1.2.2"
+    web3-core-method "1.2.2"
+    web3-utils "1.2.2"
+
 web3-eth-contract@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.0.0-beta.37.tgz#87f93c95ed16f320ba54943b7886890de6766013"
@@ -5796,6 +6237,21 @@ web3-eth-contract@1.0.0-beta.52:
     web3-providers "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-eth-contract@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.2.2.tgz#84e92714918a29e1028ee7718f0712536e14e9a1"
+  integrity sha512-EKT2yVFws3FEdotDQoNsXTYL798+ogJqR2//CaGwx3p0/RvQIgfzEwp8nbgA6dMxCsn9KOQi7OtklzpnJMkjtA==
+  dependencies:
+    "@types/bn.js" "^4.11.4"
+    underscore "1.9.1"
+    web3-core "1.2.2"
+    web3-core-helpers "1.2.2"
+    web3-core-method "1.2.2"
+    web3-core-promievent "1.2.2"
+    web3-core-subscriptions "1.2.2"
+    web3-eth-abi "1.2.2"
+    web3-utils "1.2.2"
+
 web3-eth-ens@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.0.0-beta.37.tgz#714ecb01eb447ee3eb39b2b20a10ae96edb1f01f"
@@ -5827,6 +6283,20 @@ web3-eth-ens@1.0.0-beta.52:
     web3-providers "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-eth-ens@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.2.2.tgz#0a4abed1d4cbdacbf5e1ab06e502d806d1192bc6"
+  integrity sha512-CFjkr2HnuyMoMFBoNUWojyguD4Ef+NkyovcnUc/iAb9GP4LHohKrODG4pl76R5u61TkJGobC2ij6TyibtsyVYg==
+  dependencies:
+    eth-ens-namehash "2.0.8"
+    underscore "1.9.1"
+    web3-core "1.2.2"
+    web3-core-helpers "1.2.2"
+    web3-core-promievent "1.2.2"
+    web3-eth-abi "1.2.2"
+    web3-eth-contract "1.2.2"
+    web3-utils "1.2.2"
+
 web3-eth-iban@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.0.0-beta.37.tgz#313a3f18ae2ab00ba98678ea1156b09ef32a3655"
@@ -5844,6 +6314,14 @@ web3-eth-iban@1.0.0-beta.52:
     bn.js "4.11.8"
     web3-utils "1.0.0-beta.52"
 
+web3-eth-iban@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.2.2.tgz#76bec73bad214df7c4192388979a59fc98b96c5a"
+  integrity sha512-gxKXBoUhaTFHr0vJB/5sd4i8ejF/7gIsbM/VvemHT3tF5smnmY6hcwSMmn7sl5Gs+83XVb/BngnnGkf+I/rsrQ==
+  dependencies:
+    bn.js "4.11.8"
+    web3-utils "1.2.2"
+
 web3-eth-personal@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.0.0-beta.37.tgz#187472f51861e2b6d45da43411801bc91a859f9a"
@@ -5868,6 +6346,18 @@ web3-eth-personal@1.0.0-beta.52:
     web3-providers "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-eth-personal@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.2.2.tgz#eee1c86a8132fa16b5e34c6d421ca92e684f0be6"
+  integrity sha512-4w+GLvTlFqW3+q4xDUXvCEMU7kRZ+xm/iJC8gm1Li1nXxwwFbs+Y+KBK6ZYtoN1qqAnHR+plYpIoVo27ixI5Rg==
+  dependencies:
+    "@types/node" "^12.6.1"
+    web3-core "1.2.2"
+    web3-core-helpers "1.2.2"
+    web3-core-method "1.2.2"
+    web3-net "1.2.2"
+    web3-utils "1.2.2"
+
 web3-eth@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.0.0-beta.37.tgz#0e8ffcd857a5f85ae4b5f052ad831ca5c56f4f74"
@@ -5909,6 +6399,25 @@ web3-eth@1.0.0-beta.52:
     web3-providers "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-eth@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.2.2.tgz#65a1564634a23b990efd1655bf94ad513904286c"
+  integrity sha512-UXpC74mBQvZzd4b+baD4Ocp7g+BlwxhBHumy9seyE/LMIcMlePXwCKzxve9yReNpjaU16Mmyya6ZYlyiKKV8UA==
+  dependencies:
+    underscore "1.9.1"
+    web3-core "1.2.2"
+    web3-core-helpers "1.2.2"
+    web3-core-method "1.2.2"
+    web3-core-subscriptions "1.2.2"
+    web3-eth-abi "1.2.2"
+    web3-eth-accounts "1.2.2"
+    web3-eth-contract "1.2.2"
+    web3-eth-ens "1.2.2"
+    web3-eth-iban "1.2.2"
+    web3-eth-personal "1.2.2"
+    web3-net "1.2.2"
+    web3-utils "1.2.2"
+
 web3-net@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.0.0-beta.37.tgz#b494136043f3c6ba84fe4a47d4c028c2a63c9a8e"
@@ -5931,6 +6440,15 @@ web3-net@1.0.0-beta.52:
     web3-providers "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-net@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.2.2.tgz#5c3226ca72df7c591422440ce6f1203fd42ddad9"
+  integrity sha512-K07j2DXq0x4UOJgae65rWZKraOznhk8v5EGSTdFqASTx7vWE/m+NqBijBYGEsQY1lSMlVaAY9UEQlcXK5HzXTw==
+  dependencies:
+    web3-core "1.2.2"
+    web3-core-method "1.2.2"
+    web3-utils "1.2.2"
+
 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"
@@ -5990,6 +6508,14 @@ web3-providers-http@1.0.0-beta.37:
     web3-core-helpers "1.0.0-beta.37"
     xhr2-cookies "1.1.0"
 
+web3-providers-http@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.2.2.tgz#155e55c1d69f4c5cc0b411ede40dea3d06720956"
+  integrity sha512-BNZ7Hguy3eBszsarH5gqr9SIZNvqk9eKwqwmGH1LQS1FL3NdoOn7tgPPdddrXec4fL94CwgNk4rCU+OjjZRNDg==
+  dependencies:
+    web3-core-helpers "1.2.2"
+    xhr2-cookies "1.1.0"
+
 web3-providers-ipc@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.0.0-beta.37.tgz#55d247e7197257ca0c3e4f4b0fe1561311b9d5b9"
@@ -5999,6 +6525,15 @@ web3-providers-ipc@1.0.0-beta.37:
     underscore "1.8.3"
     web3-core-helpers "1.0.0-beta.37"
 
+web3-providers-ipc@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.2.2.tgz#c6d165a12bc68674b4cdd543ea18aec79cafc2e8"
+  integrity sha512-t97w3zi5Kn/LEWGA6D9qxoO0LBOG+lK2FjlEdCwDQatffB/+vYrzZ/CLYVQSoyFZAlsDoBasVoYSWZK1n39aHA==
+  dependencies:
+    oboe "2.1.4"
+    underscore "1.9.1"
+    web3-core-helpers "1.2.2"
+
 web3-providers-ws@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.0.0-beta.37.tgz#77c15aebc00b75d760d22d063ac2e415bdbef72f"
@@ -6008,6 +6543,15 @@ web3-providers-ws@1.0.0-beta.37:
     web3-core-helpers "1.0.0-beta.37"
     websocket "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible"
 
+web3-providers-ws@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.2.2.tgz#d2c05c68598cea5ad3fa6ef076c3bcb3ca300d29"
+  integrity sha512-Wb1mrWTGMTXOpJkL0yGvL/WYLt8fUIXx8k/l52QB2IiKzvyd42dTWn4+j8IKXGSYYzOm7NMqv6nhA5VDk12VfA==
+  dependencies:
+    underscore "1.9.1"
+    web3-core-helpers "1.2.2"
+    websocket "github:web3-js/WebSocket-Node#polyfill/globalThis"
+
 web3-providers@1.0.0-beta.52:
   version "1.0.0-beta.52"
   resolved "https://registry.yarnpkg.com/web3-providers/-/web3-providers-1.0.0-beta.52.tgz#04a514430dc9740ff6da35334590886a9df4f71c"
@@ -6045,6 +6589,16 @@ web3-shh@1.0.0-beta.52:
     web3-providers "1.0.0-beta.52"
     web3-utils "1.0.0-beta.52"
 
+web3-shh@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.2.2.tgz#44ed998f2a6ba0ec5cb9d455184a0f647826a49c"
+  integrity sha512-og258NPhlBn8yYrDWjoWBBb6zo1OlBgoWGT+LL5/LPqRbjPe09hlOYHgscAAr9zZGtohTOty7RrxYw6Z6oDWCg==
+  dependencies:
+    web3-core "1.2.2"
+    web3-core-method "1.2.2"
+    web3-core-subscriptions "1.2.2"
+    web3-net "1.2.2"
+
 web3-utils@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.0.0-beta.37.tgz#ab868a90fe5e649337e38bdaf72133fcbf4d414d"
@@ -6074,6 +6628,20 @@ web3-utils@1.0.0-beta.52:
     randomhex "0.1.5"
     utf8 "2.1.1"
 
+web3-utils@1.2.2, web3-utils@^1.2.1:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.2.2.tgz#b53a08c40d2c3f31d3c4a28e7d749405df99c8c0"
+  integrity sha512-joF+s3243TY5cL7Z7y4h1JsJpUCf/kmFmj+eJar7Y2yNIGVcW961VyrAms75tjUysSuHaUQ3eQXjBEUJueT52A==
+  dependencies:
+    bn.js "4.11.8"
+    eth-lib "0.2.7"
+    ethereum-bloom-filters "^1.0.6"
+    ethjs-unit "0.1.6"
+    number-to-bn "1.7.0"
+    randombytes "^2.1.0"
+    underscore "1.9.1"
+    utf8 "3.0.0"
+
 web3@1.0.0-beta.37:
   version "1.0.0-beta.37"
   resolved "https://registry.yarnpkg.com/web3/-/web3-1.0.0-beta.37.tgz#b42c30e67195f816cd19d048fda872f70eca7083"
@@ -6087,6 +6655,20 @@ web3@1.0.0-beta.37:
     web3-shh "1.0.0-beta.37"
     web3-utils "1.0.0-beta.37"
 
+web3@1.2.2, web3@^1.0.0-beta.34, web3@^1.2.1:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.2.tgz#b1b8b69aafdf94cbaeadbb68a8aa1df2ef266aec"
+  integrity sha512-/ChbmB6qZpfGx6eNpczt5YSUBHEA5V2+iUCbn85EVb3Zv6FVxrOo5Tv7Lw0gE2tW7EEjASbCyp3mZeiZaCCngg==
+  dependencies:
+    "@types/node" "^12.6.1"
+    web3-bzz "1.2.2"
+    web3-core "1.2.2"
+    web3-eth "1.2.2"
+    web3-eth-personal "1.2.2"
+    web3-net "1.2.2"
+    web3-shh "1.2.2"
+    web3-utils "1.2.2"
+
 web3@^1.0.0-beta.52:
   version "1.0.0-beta.52"
   resolved "https://registry.yarnpkg.com/web3/-/web3-1.0.0-beta.52.tgz#a524888b84206d1ceea8abe1d6056bd7a0a8e33f"
@@ -6124,6 +6706,17 @@ websocket@^1.0.28:
     typedarray-to-buffer "^3.1.2"
     yaeti "^0.0.6"
 
+"websocket@github:web3-js/WebSocket-Node#polyfill/globalThis":
+  version "1.0.29"
+  uid "905deb4812572b344f5801f8c9ce8bb02799d82e"
+  resolved "https://codeload.github.com/web3-js/WebSocket-Node/tar.gz/905deb4812572b344f5801f8c9ce8bb02799d82e"
+  dependencies:
+    debug "^2.2.0"
+    es5-ext "^0.10.50"
+    nan "^2.14.0"
+    typedarray-to-buffer "^3.1.5"
+    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"