diff --git a/yarn.lock b/yarn.lock
index c065dfc..6d30b80 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1132,23 +1132,6 @@
   dependencies:
     defer-to-connect "^1.0.1"
 
-"@toruslabs/torus-embed@^0.2.3":
-  version "0.2.3"
-  resolved "https://registry.yarnpkg.com/@toruslabs/torus-embed/-/torus-embed-0.2.3.tgz#060b114dac4ec7985b38f6d4ce808d0b28401da4"
-  integrity sha512-oqen7G4OaAhwNJmtykIxdOrw33r7rXCYpnFSD8sUASfJ8KFQQkqSUptMzLxutjJBHfNbO+soxAQ96GrjvisTxw==
-  dependencies:
-    json-rpc-engine "^5.1.4"
-    json-rpc-middleware-stream "^2.1.1"
-    loglevel "^1.6.4"
-    obj-multiplex "^1.0.0"
-    obs-store "^4.0.3"
-    post-message-stream "^3.0.0"
-    pump "^3.0.0"
-    readable-stream "^3.4.0"
-    sri-toolbox "^0.2.0"
-    through2 "^3.0.1"
-    web3 "0.20.7"
-
 "@types/events@*":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
@@ -4125,7 +4108,7 @@ encoding@^0.1.11:
   dependencies:
     iconv-lite "~0.4.13"
 
-end-of-stream@^1.0.0, end-of-stream@^1.1.0, end-of-stream@^1.4.0, end-of-stream@^1.4.1:
+end-of-stream@^1.0.0, end-of-stream@^1.1.0, end-of-stream@^1.4.1:
   version "1.4.4"
   resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.4.tgz#5ae64a5f45057baf3626ec14da0ca5e4b2431eb0"
   integrity sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==
@@ -4341,13 +4324,6 @@ eth-ens-namehash@^1.0.2:
     idna-uts46 "^1.0.1"
     js-sha3 "^0.5.7"
 
-eth-json-rpc-errors@^1.1.0:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/eth-json-rpc-errors/-/eth-json-rpc-errors-1.1.1.tgz#148377ef55155585981c21ff574a8937f9d6991f"
-  integrity sha512-WT5shJ5KfNqHi9jOZD+ID8I1kuYWNrigtZat7GOQkvwo99f8SzAVaEcWhJUv656WiZOAg3P1RiJQANtUmDmbIg==
-  dependencies:
-    fast-safe-stringify "^2.0.6"
-
 eth-json-rpc-infura@^3.1.0:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/eth-json-rpc-infura/-/eth-json-rpc-infura-3.2.1.tgz#26702a821067862b72d979c016fd611502c6057f"
@@ -5060,11 +5036,6 @@ fast-levenshtein@~2.0.4:
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
   integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
 
-fast-safe-stringify@^2.0.6:
-  version "2.0.7"
-  resolved "https://registry.yarnpkg.com/fast-safe-stringify/-/fast-safe-stringify-2.0.7.tgz#124aa885899261f68aedb42a7c080de9da608743"
-  integrity sha512-Utm6CdzT+6xsDk2m8S6uL8VHxNwI6Jub+e9NYTcAms28T84pTa25GJQV9j0CY0N1rM8hK4x6grpF2BQf+2qwVA==
-
 fastparse@^1.1.1:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/fastparse/-/fastparse-1.1.2.tgz#91728c5a5942eced8531283c79441ee4122c35a9"
@@ -7135,16 +7106,6 @@ json-rpc-engine@^3.4.0, json-rpc-engine@^3.6.0:
     promise-to-callback "^1.0.0"
     safe-event-emitter "^1.0.1"
 
-json-rpc-engine@^5.1.4:
-  version "5.1.4"
-  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-5.1.4.tgz#c18d1959eb175049fa7301d4866931ae2f879e47"
-  integrity sha512-nBFWYJ1mvlZL7gqq0M9230SxedL9CbSYO1WgrFi/C1Zo+ZrHUZWLRbr7fUdlLt9TC0G+sf/aEUeuJjR2lHsMvA==
-  dependencies:
-    async "^2.0.1"
-    eth-json-rpc-errors "^1.1.0"
-    promise-to-callback "^1.0.0"
-    safe-event-emitter "^1.0.1"
-
 json-rpc-error@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/json-rpc-error/-/json-rpc-error-2.0.0.tgz#a7af9c202838b5e905c7250e547f1aff77258a02"
@@ -7152,14 +7113,6 @@ json-rpc-error@^2.0.0:
   dependencies:
     inherits "^2.0.1"
 
-json-rpc-middleware-stream@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/json-rpc-middleware-stream/-/json-rpc-middleware-stream-2.1.1.tgz#06e5409e201e7ddeae47bef29f7059eafd4d5325"
-  integrity sha512-WZheufPN+/RKkjXQP3lK5tFYblqG0n+oYv5qpammwwY2vsJRB7mM4Txhr4ajzvYEZi1UkENnplrmaYiqaqafaA==
-  dependencies:
-    readable-stream "^2.3.3"
-    safe-event-emitter "^1.0.1"
-
 json-rpc-random-id@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/json-rpc-random-id/-/json-rpc-random-id-1.0.1.tgz#ba49d96aded1444dbb8da3d203748acbbcdec8c8"
@@ -7723,9 +7676,9 @@ locate-path@^5.0.0:
     p-locate "^4.1.0"
 
 lodash-es@^4.17.15:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.15.tgz#21bd96839354412f23d7a10340e5eac6ee455d78"
-  integrity sha512-rlrc3yU3+JNOpZ9zj5pQtxnx2THmvRykwL4Xlxoa8I9lHBlVbbyPhgyPMioxVZ4NqyxaVVtaJnzsyOidQIhyyQ==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.21.tgz#43e626c46e6591b7750beb2b50117390c609e3ee"
+  integrity sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw==
 
 lodash.assign@^4.0.3, lodash.assign@^4.0.6:
   version "4.2.0"
@@ -7810,11 +7763,6 @@ log-update@^2.3.0:
     cli-cursor "^2.0.0"
     wrap-ansi "^3.0.1"
 
-loglevel@^1.6.4:
-  version "1.6.4"
-  resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.6.4.tgz#f408f4f006db8354d0577dcf6d33485b3cb90d56"
-  integrity sha512-p0b6mOGKcGa+7nnmKbpzR6qloPbrgLcnio++E+14Vo/XffOGwZtRpUhr8dTH/x2oCMmEoIU0Zwm3ZauhvYD17g==
-
 looper@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/looper/-/looper-2.0.0.tgz#66cd0c774af3d4fedac53794f742db56da8f09ec"
@@ -8706,15 +8654,6 @@ oauth-sign@~0.9.0:
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
   integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
 
-obj-multiplex@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/obj-multiplex/-/obj-multiplex-1.0.0.tgz#2f2ae6bfd4ae11befe742ea9ea5b36636eabffc1"
-  integrity sha1-Lyrmv9SuEb7+dC6p6ls2Y26r/8E=
-  dependencies:
-    end-of-stream "^1.4.0"
-    once "^1.4.0"
-    readable-stream "^2.3.3"
-
 object-assign@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-2.1.1.tgz#43c36e5d569ff8e4816c4efa8be02d26967c18aa"
@@ -8844,16 +8783,6 @@ oboe@2.1.4:
   dependencies:
     http-https "^1.0.0"
 
-obs-store@^4.0.3:
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/obs-store/-/obs-store-4.0.3.tgz#b632ec7814baa604fae084a4c97e87c0b7a6d14c"
-  integrity sha512-+mm13kCRDv6IcvUDKTw0LIy5+dQhIktYaR/RwwZUFzOTi/fjMaNBnk42Adb94qZqJ00qWkjhQSZH7MXlKnTi8A==
-  dependencies:
-    readable-stream "^2.2.2"
-    safe-event-emitter "^1.0.1"
-    through2 "^2.0.3"
-    xtend "^4.0.1"
-
 on-finished@~2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
@@ -9438,13 +9367,6 @@ posix-character-classes@^0.1.0:
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
   integrity sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=
 
-post-message-stream@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/post-message-stream/-/post-message-stream-3.0.0.tgz#90d9f54bd209e6b6f5d74795b87588205b547048"
-  integrity sha1-kNn1S9IJ5rb110eVuHWIIFtUcEg=
-  dependencies:
-    readable-stream "^2.1.4"
-
 postcss-calc@^7.0.1:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/postcss-calc/-/postcss-calc-7.0.1.tgz#36d77bab023b0ecbb9789d84dcb23c4941145436"
@@ -10279,7 +10201,7 @@ readable-stream@^1.0.33:
     isarray "0.0.1"
     string_decoder "~0.10.x"
 
-readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.5, readable-stream@^2.0.6, readable-stream@^2.1.4, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.2.9, readable-stream@^2.3.0, readable-stream@^2.3.3, readable-stream@^2.3.5, readable-stream@^2.3.6, readable-stream@~2.3.3, readable-stream@~2.3.6:
+readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.5, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.2.9, readable-stream@^2.3.0, readable-stream@^2.3.3, readable-stream@^2.3.5, readable-stream@^2.3.6, readable-stream@~2.3.3, readable-stream@~2.3.6:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
   integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
@@ -11215,11 +11137,6 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
   integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
 
-sri-toolbox@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/sri-toolbox/-/sri-toolbox-0.2.0.tgz#a7fea5c3fde55e675cf1c8c06f3ebb5c2935835e"
-  integrity sha1-p/6lw/3lXmdc8cjAbz67XCk1g14=
-
 sshpk@^1.7.0:
   version "1.16.1"
   resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.16.1.tgz#fb661c0bef29b39db40769ee39fa70093d6f6877"
@@ -12737,17 +12654,6 @@ web3-utils@1.2.1, web3-utils@^1.2.0, web3-utils@^1.2.1:
     underscore "1.9.1"
     utf8 "3.0.0"
 
-web3@0.20.7, web3@^0.20.6:
-  version "0.20.7"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-0.20.7.tgz#1605e6d81399ed6f85a471a4f3da0c8be57df2f7"
-  integrity sha512-VU6/DSUX93d1fCzBz7WP/SGCQizO1rKZi4Px9j/3yRyfssHyFcZamMw2/sj4E8TlfMXONvZLoforR8B4bRoyTQ==
-  dependencies:
-    bignumber.js "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
-    crypto-js "^3.1.4"
-    utf8 "^2.1.1"
-    xhr2-cookies "^1.1.0"
-    xmlhttprequest "*"
-
 web3@1.2.1, web3@^1.0.0-beta.34, web3@^1.2.0, web3@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.1.tgz#5d8158bcca47838ab8c2b784a2dee4c3ceb4179b"
@@ -12802,6 +12708,17 @@ web3@^0.18.2:
     xhr2 "*"
     xmlhttprequest "*"
 
+web3@^0.20.6:
+  version "0.20.7"
+  resolved "https://registry.yarnpkg.com/web3/-/web3-0.20.7.tgz#1605e6d81399ed6f85a471a4f3da0c8be57df2f7"
+  integrity sha512-VU6/DSUX93d1fCzBz7WP/SGCQizO1rKZi4Px9j/3yRyfssHyFcZamMw2/sj4E8TlfMXONvZLoforR8B4bRoyTQ==
+  dependencies:
+    bignumber.js "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
+    crypto-js "^3.1.4"
+    utf8 "^2.1.1"
+    xhr2-cookies "^1.1.0"
+    xmlhttprequest "*"
+
 "webcrypto-shim@github:dignifiedquire/webcrypto-shim#master":
   version "0.1.1"
   resolved "https://codeload.github.com/dignifiedquire/webcrypto-shim/tar.gz/190bc9ec341375df6025b17ae12ddb2428ea49c8"