diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 4ee225d6a8..7ffd79aa2a 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -468,6 +468,7 @@
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
       "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
       "dev": true,
+      "optional": true,
       "requires": {
         "mime-types": "~2.1.18",
         "negotiator": "0.6.1"
@@ -552,7 +553,8 @@
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
       "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "anymatch": {
       "version": "2.0.0",
@@ -612,7 +614,8 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "array-union": {
       "version": "1.0.2",
@@ -1504,6 +1507,7 @@
       "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
       "integrity": "sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "readable-stream": "^2.3.5",
         "safe-buffer": "^5.1.1"
@@ -1535,6 +1539,7 @@
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.3.tgz",
       "integrity": "sha1-WykhmP/dVTs6DyDe0FkrlWlVyLQ=",
       "dev": true,
+      "optional": true,
       "requires": {
         "bytes": "3.0.0",
         "content-type": "~1.0.4",
@@ -1553,6 +1558,7 @@
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
           "dev": true,
+          "optional": true,
           "requires": {
             "ms": "2.0.0"
           }
@@ -1733,6 +1739,7 @@
       "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.2.1.tgz",
       "integrity": "sha512-c+Ko0loDaFfuPWiL02ls9Xd3GO3cPVmUobQ6t3rXNUk304u6hGq+8N/kFi+QEIKhzK3uwolVhLzszmfLmMLnqg==",
       "dev": true,
+      "optional": true,
       "requires": {
         "base64-js": "^1.0.2",
         "ieee754": "^1.1.4"
@@ -1743,6 +1750,7 @@
       "resolved": "https://registry.npmjs.org/buffer-alloc/-/buffer-alloc-1.2.0.tgz",
       "integrity": "sha512-CFsHQgjtW1UChdXgbyJGtnm+O/uLQeZdtbDo8mfUgYXCHSM1wgrVxXm6bSyrUuErEb+4sYVGCzASBRot7zyrow==",
       "dev": true,
+      "optional": true,
       "requires": {
         "buffer-alloc-unsafe": "^1.1.0",
         "buffer-fill": "^1.0.0"
@@ -1752,7 +1760,8 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz",
       "integrity": "sha512-TEM2iMIEQdJ2yjPJoSIsldnleVaAk1oW3DBVUykyOLsEsFmEc9kn+SFFPz+gl54KQNxlDnAwCXosOS9Okx2xAg==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "buffer-crc32": {
       "version": "0.2.13",
@@ -1765,7 +1774,8 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
       "integrity": "sha1-+PeLdniYiO858gXNY39o5wISKyw=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "buffer-from": {
       "version": "1.1.1",
@@ -1776,7 +1786,8 @@
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/buffer-to-arraybuffer/-/buffer-to-arraybuffer-0.0.5.tgz",
       "integrity": "sha1-YGSkD6dutDxyOrqe+PbhIW0QURo=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "buffer-xor": {
       "version": "1.0.3",
@@ -1793,7 +1804,8 @@
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
       "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "bytewise": {
       "version": "1.1.0",
@@ -2207,13 +2219,15 @@
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
       "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "content-type": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
       "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "convert-source-map": {
       "version": "1.6.0",
@@ -2227,19 +2241,22 @@
       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
       "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "cookie-signature": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "cookiejar": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/cookiejar/-/cookiejar-2.1.2.tgz",
       "integrity": "sha512-Mw+adcfzPxcPeI+0WlvRrr/3lGVO0bD75SxX6811cxSh1Wbxx7xZBGK1eVtDf6si8rg2lhnUjsVLMFMfbRIuwA==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "copy-concurrently": {
       "version": "1.0.5",
@@ -2276,6 +2293,7 @@
       "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
       "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
       "dev": true,
+      "optional": true,
       "requires": {
         "object-assign": "^4",
         "vary": "^1"
@@ -2498,6 +2516,7 @@
       "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-3.3.0.tgz",
       "integrity": "sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=",
       "dev": true,
+      "optional": true,
       "requires": {
         "mimic-response": "^1.0.0"
       }
@@ -2507,6 +2526,7 @@
       "resolved": "https://registry.npmjs.org/decompress-tar/-/decompress-tar-4.1.1.tgz",
       "integrity": "sha512-JdJMaCrGpB5fESVyxwpCx4Jdj2AagLmv3y58Qy4GE6HMVjWz1FeVQk1Ct4Kye7PftcdOo/7U7UKzYBJgqnGeUQ==",
       "dev": true,
+      "optional": true,
       "requires": {
         "file-type": "^5.2.0",
         "is-stream": "^1.1.0",
@@ -2715,7 +2735,8 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
       "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "des.js": {
       "version": "1.0.0",
@@ -2731,7 +2752,8 @@
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
       "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "detect-indent": {
       "version": "4.0.0",
@@ -2792,7 +2814,8 @@
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer3/-/duplexer3-0.1.4.tgz",
       "integrity": "sha1-7gHdHKwO08vH/b6jfcCo8c4ALOI=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "duplexify": {
       "version": "3.7.1",
@@ -2819,7 +2842,8 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
       "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "electron-to-chromium": {
       "version": "1.3.113",
@@ -2862,7 +2886,8 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
       "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "encoding": {
       "version": "0.1.12",
@@ -2963,7 +2988,8 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
       "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "escape-string-regexp": {
       "version": "1.0.5",
@@ -3361,7 +3387,8 @@
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
       "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "eth-block-tracker": {
       "version": "3.0.1",
@@ -3440,6 +3467,7 @@
       "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.1.27.tgz",
       "integrity": "sha512-B8czsfkJYzn2UIEMwjc7Mbj+Cy72V+/OXH/tb44LV8jhrjizQJJ325xMOMyk3+ETa6r6oi0jsUY14+om8mQMWA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "bn.js": "^4.11.6",
         "elliptic": "^6.4.0",
@@ -3517,13 +3545,12 @@
           "resolved": "https://registry.npmjs.org/eth-sig-util/-/eth-sig-util-1.4.2.tgz",
           "integrity": "sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=",
           "requires": {
-            "ethereumjs-abi": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
             "ethereumjs-util": "^5.1.1"
           },
           "dependencies": {
             "ethereumjs-abi": {
               "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
-              "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+              "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
               "requires": {
                 "bn.js": "^4.10.0",
                 "ethereumjs-util": "^5.0.0"
@@ -3540,8 +3567,8 @@
           "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
           "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
           "requires": {
-            "bn.js": "^4.10.0",
-            "ethereumjs-util": "^5.0.0"
+            "bn.js": "^4.11.8",
+            "ethereumjs-util": "^6.0.0"
           }
         },
         "ethereumjs-block": {
@@ -3939,6 +3966,7 @@
       "resolved": "https://registry.npmjs.org/ethjs-unit/-/ethjs-unit-0.1.6.tgz",
       "integrity": "sha1-xmWSHkduh7ziqdWIpv4EBbLEFpk=",
       "dev": true,
+      "optional": true,
       "requires": {
         "bn.js": "4.11.6",
         "number-to-bn": "1.7.0"
@@ -3948,7 +3976,8 @@
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
           "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -3965,7 +3994,8 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-1.1.1.tgz",
       "integrity": "sha1-R3hr2qCHyvext15zq8XH1UAVjNA=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "events": {
       "version": "3.0.0",
@@ -4056,6 +4086,7 @@
       "resolved": "https://registry.npmjs.org/express/-/express-4.16.4.tgz",
       "integrity": "sha512-j12Uuyb4FMrd/qQAm6uCHAkPtO8FDTRJZBDd5D2KOL2eLaz1yUNdUB/NOIyq0iU4q4cFarsUCrnFDPBcnksuOg==",
       "dev": true,
+      "optional": true,
       "requires": {
         "accepts": "~1.3.5",
         "array-flatten": "1.1.1",
@@ -4094,6 +4125,7 @@
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
           "dev": true,
+          "optional": true,
           "requires": {
             "ms": "2.0.0"
           }
@@ -4102,7 +4134,8 @@
           "version": "1.4.0",
           "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
           "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew==",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -4300,7 +4333,8 @@
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/file-type/-/file-type-5.2.0.tgz",
       "integrity": "sha1-LdvqfHP/42No365J3DOMBYwritY=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "file-uri-to-path": {
       "version": "1.0.0",
@@ -4341,6 +4375,7 @@
       "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.1.tgz",
       "integrity": "sha512-Y1GUDo39ez4aHAw7MysnUD5JzYX+WaIj8I57kO3aEPT1fFRL4sr7mjei97FgnwhAyyzRYmQZaTHb2+9uZ1dPtg==",
       "dev": true,
+      "optional": true,
       "requires": {
         "debug": "2.6.9",
         "encodeurl": "~1.0.2",
@@ -4356,6 +4391,7 @@
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
           "dev": true,
+          "optional": true,
           "requires": {
             "ms": "2.0.0"
           }
@@ -4364,7 +4400,8 @@
           "version": "1.4.0",
           "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
           "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew==",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -4455,7 +4492,8 @@
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
       "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "fragment-cache": {
       "version": "0.2.1",
@@ -4470,7 +4508,8 @@
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/fresh/-/fresh-0.5.2.tgz",
       "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "from2": {
       "version": "2.3.0",
@@ -4486,13 +4525,15 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
       "integrity": "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "fs-extra": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-2.1.2.tgz",
       "integrity": "sha1-BGxwFjzvmq1GsOSn+kZ/si1x3jU=",
       "dev": true,
+      "optional": true,
       "requires": {
         "graceful-fs": "^4.1.2",
         "jsonfile": "^2.1.0"
@@ -4548,7 +4589,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -4569,12 +4611,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -4589,17 +4633,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -4716,7 +4763,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -4728,6 +4776,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -4742,6 +4791,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -4749,12 +4799,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -4773,6 +4825,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -4853,7 +4906,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -4865,6 +4919,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -4950,7 +5005,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -4986,6 +5042,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -5005,6 +5062,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -5048,12 +5106,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -5062,6 +5122,7 @@
       "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
+      "optional": true,
       "requires": {
         "graceful-fs": "^4.1.2",
         "inherits": "~2.0.0",
@@ -5111,7 +5172,8 @@
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
       "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "get-value": {
       "version": "2.0.6",
@@ -5207,6 +5269,7 @@
       "resolved": "https://registry.npmjs.org/got/-/got-7.1.0.tgz",
       "integrity": "sha512-Y5WMo7xKKq1muPsxD+KmrR8DH5auG7fBdDVueZwETwV6VytKyU9OX/ddpq2/1hp1vIPvVb4T81dKQz3BivkNLw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "decompress-response": "^3.2.0",
         "duplexer3": "^0.1.4",
@@ -5281,7 +5344,8 @@
       "version": "1.4.2",
       "resolved": "https://registry.npmjs.org/has-symbol-support-x/-/has-symbol-support-x-1.4.2.tgz",
       "integrity": "sha512-3ToOva++HaW+eCpgqZrCfN51IPB+7bJNVT6CUATzueB5Heb8o6Nam0V3HG5dlDvZU1Gn5QLcbahiKw/XVk5JJw==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "has-symbols": {
       "version": "1.0.0",
@@ -5293,6 +5357,7 @@
       "resolved": "https://registry.npmjs.org/has-to-string-tag-x/-/has-to-string-tag-x-1.4.1.tgz",
       "integrity": "sha512-vdbKfmw+3LoOYVr+mtxHaX5a96+0f3DljYd8JOqvOLsf5mw2Otda2qCDT9qRqLAhrjyQ0h7ual5nOiASpsGNFw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "has-symbol-support-x": "^1.4.1"
       }
@@ -5399,6 +5464,7 @@
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
       "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
       "dev": true,
+      "optional": true,
       "requires": {
         "depd": "~1.1.2",
         "inherits": "2.0.3",
@@ -5410,7 +5476,8 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/http-https/-/http-https-1.0.0.tgz",
       "integrity": "sha1-L5CN1fHbQGjAWM1ubUzjkskTOJs=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "http-signature": {
       "version": "1.2.0",
@@ -5770,7 +5837,8 @@
       "version": "1.8.0",
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.8.0.tgz",
       "integrity": "sha1-6qM9bd16zo9/b+DJygRA5wZzix4=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "is-accessor-descriptor": {
       "version": "0.1.6",
@@ -5965,7 +6033,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/is-object/-/is-object-1.0.1.tgz",
       "integrity": "sha1-iVJojF7C/9awPsyF52ngKQMINHA=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "is-observable": {
       "version": "1.1.0",
@@ -6004,7 +6073,8 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/is-plain-obj/-/is-plain-obj-1.1.0.tgz",
       "integrity": "sha1-caUMhCnfync8kqOQpKA7OfzVHT4=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "is-plain-object": {
       "version": "2.0.4",
@@ -6045,7 +6115,8 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/is-retry-allowed/-/is-retry-allowed-1.1.0.tgz",
       "integrity": "sha1-EaBgVotnM5REAz0BJaYaINVk+zQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "is-stream": {
       "version": "1.1.0",
@@ -6132,6 +6203,7 @@
       "resolved": "https://registry.npmjs.org/isurl/-/isurl-1.0.0.tgz",
       "integrity": "sha512-1P/yWsxPlDtn7QeRD+ULKQPaIaN6yF368GZ2vDfv0AL0NwpStafjWCDDdn0k8wgFMWpVAqG7oJhxHnlud42i9w==",
       "dev": true,
+      "optional": true,
       "requires": {
         "has-to-string-tag-x": "^1.2.0",
         "is-object": "^1.0.1"
@@ -6875,7 +6947,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/lowercase-keys/-/lowercase-keys-1.0.1.tgz",
       "integrity": "sha512-G2Lj61tXDnVFFOi8VZds+SoQjtQC3dgokKdDG2mTm1tx4m50NUHBOZSBwQQHyy0V12A0JTG4icfZQH+xPyh8VA==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "lru-cache": {
       "version": "3.2.0",
@@ -6960,7 +7033,8 @@
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "mem": {
       "version": "4.1.0",
@@ -7015,7 +7089,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
       "integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "merkle-patricia-tree": {
       "version": "2.3.1",
@@ -7077,7 +7152,8 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
       "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "micromatch": {
       "version": "3.1.10",
@@ -7114,7 +7190,8 @@
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/mime/-/mime-1.4.1.tgz",
       "integrity": "sha512-KI1+qOZu5DcW6wayYHSzR/tXKCDC5Om4s1z2QJjDULzLcmf3DvzS7oluY4HCTrc+9FiKmWUgeNLg7W3uIQvxtQ==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "mime-db": {
       "version": "1.38.0",
@@ -7139,7 +7216,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/mimic-response/-/mimic-response-1.0.1.tgz",
       "integrity": "sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "min-document": {
       "version": "2.19.0",
@@ -7357,7 +7435,8 @@
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/nano-json-stream-parser/-/nano-json-stream-parser-0.1.2.tgz",
       "integrity": "sha1-DMj20OK2IrR5xA1JnEbWS3Vcb18=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "nanomatch": {
       "version": "1.2.13",
@@ -7388,7 +7467,8 @@
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.1.tgz",
       "integrity": "sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "neo-async": {
       "version": "2.6.0",
@@ -8672,6 +8752,7 @@
       "resolved": "https://registry.npmjs.org/oboe/-/oboe-2.1.3.tgz",
       "integrity": "sha1-K0hl29Rr6BIlcT9Om/5Lz09oCk8=",
       "dev": true,
+      "optional": true,
       "requires": {
         "http-https": "^1.0.0"
       }
@@ -8681,6 +8762,7 @@
       "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.3.0.tgz",
       "integrity": "sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "ee-first": "1.1.1"
       }
@@ -8744,7 +8826,8 @@
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-0.3.0.tgz",
       "integrity": "sha512-RVbZPLso8+jFeq1MfNvgXtCRED2raz/dKpacfTNxsx6pLEpEomM7gah6VeHSYV3+vo0OAi4MkArtQcWWXuQoyw==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "p-defer": {
       "version": "1.0.0",
@@ -8793,6 +8876,7 @@
       "resolved": "https://registry.npmjs.org/p-timeout/-/p-timeout-1.2.1.tgz",
       "integrity": "sha1-XrOzU7f86Z8QGhA4iAuwVOu+o4Y=",
       "dev": true,
+      "optional": true,
       "requires": {
         "p-finally": "^1.0.0"
       }
@@ -8855,7 +8939,8 @@
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.2.tgz",
       "integrity": "sha1-/CidTtiZMRlGDBViUyYs3I3mW/M=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "pascalcase": {
       "version": "0.1.1",
@@ -8909,7 +8994,8 @@
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
       "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "path-type": {
       "version": "1.1.0",
@@ -9055,7 +9141,8 @@
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-1.0.4.tgz",
       "integrity": "sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "prettier": {
       "version": "1.16.4",
@@ -9110,6 +9197,7 @@
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.4.tgz",
       "integrity": "sha512-5erio2h9jp5CHGwcybmxmVqHmnCBZeewlfJ0pex+UW7Qny7OOZXTtH56TGNyBizkgiOwhJtMKrVzDTeKcySZwA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "forwarded": "~0.1.2",
         "ipaddr.js": "1.8.0"
@@ -9243,6 +9331,7 @@
       "resolved": "https://registry.npmjs.org/query-string/-/query-string-5.1.1.tgz",
       "integrity": "sha512-gjWOsm2SoGlgLEdAGt7a6slVOk9mGiXmPFMqrEhLQ68rhQuBnpfs3+EmlvqKyxnCo9/PPlF+9MtY02S1aFg+Jw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "decode-uri-component": "^0.2.0",
         "object-assign": "^4.1.0",
@@ -9283,19 +9372,22 @@
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/randomhex/-/randomhex-0.1.5.tgz",
       "integrity": "sha1-us7vmCMpCRQA8qKRLGzQLxCU9YU=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "range-parser": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.0.tgz",
       "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "raw-body": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.3.3.tgz",
       "integrity": "sha512-9esiElv1BrZoI3rCDuOuKCBRbuApGGaDPQfjSflGxdy4oyzqghxu6klEkkVIvBje+FF0BX9coEv8KqW6X/7njw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "bytes": "3.0.0",
         "http-errors": "1.6.3",
@@ -9748,6 +9840,7 @@
       "resolved": "https://registry.npmjs.org/send/-/send-0.16.2.tgz",
       "integrity": "sha512-E64YFPUssFHEFBvpbbjr44NCLtI1AohxQ8ZSiJjQLskAdKuriYEP6VyGEsRDH8ScozGpkaX1BGvhanqCwkcEZw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "debug": "2.6.9",
         "depd": "~1.1.2",
@@ -9769,6 +9862,7 @@
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
           "dev": true,
+          "optional": true,
           "requires": {
             "ms": "2.0.0"
           }
@@ -9777,7 +9871,8 @@
           "version": "1.4.0",
           "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
           "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew==",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -9792,6 +9887,7 @@
       "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
       "integrity": "sha512-p/tdJrO4U387R9oMjb1oj7qSMaMfmOyd4j9hOFoxZe2baQszgHcSWjuya/CiT5kgZZKRudHNOA0pYXOl8rQ5nw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "encodeurl": "~1.0.2",
         "escape-html": "~1.0.3",
@@ -9804,6 +9900,7 @@
       "resolved": "https://registry.npmjs.org/servify/-/servify-0.1.12.tgz",
       "integrity": "sha512-/xE6GvsKKqyo1BAY+KxOWXcLpPsUUyji7Qg3bVD7hh1eRze5bR1uYiuDA/k3Gof1s9BTzQZEJK8sNcNGFIzeWw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "body-parser": "^1.16.0",
         "cors": "^2.8.1",
@@ -9855,7 +9952,8 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
       "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "sha.js": {
       "version": "2.4.11",
@@ -9899,13 +9997,15 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.0.tgz",
       "integrity": "sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "simple-get": {
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/simple-get/-/simple-get-2.8.1.tgz",
       "integrity": "sha512-lSSHRSw3mQNUGPAYRqo7xy9dhKmxFXIjLjp4KHpf99GEH2VH7C3AM+Qfx6du6jhfUi6Vm7XnbEVEf7Wb6N8jRw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "decompress-response": "^3.3.0",
         "once": "^1.3.1",
@@ -10259,7 +10359,8 @@
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
       "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "stream-browserify": {
       "version": "2.0.2",
@@ -10320,7 +10421,8 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz",
       "integrity": "sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "string-argv": {
       "version": "0.0.2",
@@ -10545,6 +10647,7 @@
       "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-1.6.2.tgz",
       "integrity": "sha512-rzS0heiNf8Xn7/mpdSVVSMAWAoy9bfb1WOTYC78Z0UQKeKa/CWS8FOq0lKGNa8DWKAn9gxjCvMLYc5PGXYlK2A==",
       "dev": true,
+      "optional": true,
       "requires": {
         "bl": "^1.0.0",
         "buffer-alloc": "^1.2.0",
@@ -10607,6 +10710,7 @@
       "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.0.tgz",
       "integrity": "sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=",
       "dev": true,
+      "optional": true,
       "requires": {
         "any-promise": "^1.0.0"
       }
@@ -10616,6 +10720,7 @@
       "resolved": "https://registry.npmjs.org/thenify-all/-/thenify-all-1.6.0.tgz",
       "integrity": "sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=",
       "dev": true,
+      "optional": true,
       "requires": {
         "thenify": ">= 3.1.0 < 4"
       }
@@ -10638,7 +10743,8 @@
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/timed-out/-/timed-out-4.0.1.tgz",
       "integrity": "sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "timers-browserify": {
       "version": "2.0.10",
@@ -10667,7 +10773,8 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/to-buffer/-/to-buffer-1.1.1.tgz",
       "integrity": "sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "to-fast-properties": {
       "version": "1.0.3",
@@ -10787,6 +10894,7 @@
       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.16.tgz",
       "integrity": "sha512-HRkVv/5qY2G6I8iab9cI7v1bOIdhm94dVjQCPFElW9W+3GeDOSHmy2EBYe4VTApuzolPcmgFTN3ftVJRKR2J9Q==",
       "dev": true,
+      "optional": true,
       "requires": {
         "media-typer": "0.3.0",
         "mime-types": "~2.1.18"
@@ -10861,7 +10969,8 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
       "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "unbzip2-stream": {
       "version": "1.3.3",
@@ -10878,7 +10987,8 @@
       "version": "1.8.3",
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
       "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "union-value": {
       "version": "1.0.0",
@@ -10942,7 +11052,8 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
       "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "unset-value": {
       "version": "1.0.0",
@@ -11033,6 +11144,7 @@
       "resolved": "https://registry.npmjs.org/url-parse-lax/-/url-parse-lax-1.0.0.tgz",
       "integrity": "sha1-evjzA2Rem9eaJy56FKxovAYJ2nM=",
       "dev": true,
+      "optional": true,
       "requires": {
         "prepend-http": "^1.0.1"
       }
@@ -11041,13 +11153,15 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/url-set-query/-/url-set-query-1.0.0.tgz",
       "integrity": "sha1-AW6M/Xwg7gXK/neV6JK9BwL6ozk=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "url-to-options": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/url-to-options/-/url-to-options-1.0.1.tgz",
       "integrity": "sha1-FQWgOiiaSMvXpDTvuu7FBV9WM6k=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "use": {
       "version": "3.1.1",
@@ -11088,7 +11202,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
       "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "uuid": {
       "version": "3.3.2",
@@ -11114,7 +11229,8 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "verror": {
       "version": "1.10.0",
@@ -11179,6 +11295,7 @@
       "resolved": "https://registry.npmjs.org/web3-core/-/web3-core-1.0.0-beta.35.tgz",
       "integrity": "sha512-ayGavbgVk4KL9Y88Uv411fBJ0SVgVfKhKEBweKYzmP0zOqneMzWt6YsyD1n6kRvjAbqA0AfUPEOKyMNjcx2tjw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "web3-core-helpers": "1.0.0-beta.35",
         "web3-core-method": "1.0.0-beta.35",
@@ -11191,6 +11308,7 @@
       "resolved": "https://registry.npmjs.org/web3-core-helpers/-/web3-core-helpers-1.0.0-beta.35.tgz",
       "integrity": "sha512-APOu3sEsamyqWt//8o4yq9KF25/uqGm+pQShson/sC4gKzmfJB07fLo2ond0X30E8fIqAPeVCotPXQxGciGUmA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "underscore": "1.8.3",
         "web3-eth-iban": "1.0.0-beta.35",
@@ -11202,6 +11320,7 @@
       "resolved": "https://registry.npmjs.org/web3-core-method/-/web3-core-method-1.0.0-beta.35.tgz",
       "integrity": "sha512-jidImCide8q0GpfsO4L73qoHrbkeWgwU3uOH5DKtJtv0ccmG086knNMRgryb/o9ZgetDWLmDEsJnHjBSoIwcbA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "underscore": "1.8.3",
         "web3-core-helpers": "1.0.0-beta.35",
@@ -11215,6 +11334,7 @@
       "resolved": "https://registry.npmjs.org/web3-core-promievent/-/web3-core-promievent-1.0.0-beta.35.tgz",
       "integrity": "sha512-GvqXqKq07OmHuVi5uNRg6k79a1/CI0ViCC+EtNv4CORHtDRmYEt5Bvdv6z6FJEiaaQkD0lKbFwNhLxutx7HItw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "any-promise": "1.3.0",
         "eventemitter3": "1.1.1"
@@ -11225,6 +11345,7 @@
       "resolved": "https://registry.npmjs.org/web3-core-requestmanager/-/web3-core-requestmanager-1.0.0-beta.35.tgz",
       "integrity": "sha512-S+zW2h17ZZQU9oe3yaCJE0E7aJS4C3Kf4kGPDv+nXjW0gKhQQhgVhw1Doq/aYQGqNSWJp7f1VHkz5gQWwg6RRg==",
       "dev": true,
+      "optional": true,
       "requires": {
         "underscore": "1.8.3",
         "web3-core-helpers": "1.0.0-beta.35",
@@ -11238,6 +11359,7 @@
       "resolved": "https://registry.npmjs.org/web3-core-subscriptions/-/web3-core-subscriptions-1.0.0-beta.35.tgz",
       "integrity": "sha512-gXzLrWvcGkGiWq1y33Z4Y80XI8XMrwowiQJkrPSjQ81K5PBKquOGwcMffLaKcwdmEy/NpsOXDeFo3eLE1Ghvvw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "eventemitter3": "1.1.1",
         "underscore": "1.8.3",
@@ -11270,6 +11392,7 @@
       "resolved": "https://registry.npmjs.org/web3-eth-abi/-/web3-eth-abi-1.0.0-beta.35.tgz",
       "integrity": "sha512-KUDC+EtFFYG8z01ZleKrASdjj327/rtWHzEt6RWsEj7bBa0bGp9nEh+nqdZx/Sdgz1O8tnfFzJlrRcXpfr1vGg==",
       "dev": true,
+      "optional": true,
       "requires": {
         "bn.js": "4.11.6",
         "underscore": "1.8.3",
@@ -11281,7 +11404,8 @@
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
           "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -11358,6 +11482,7 @@
       "resolved": "https://registry.npmjs.org/web3-eth-iban/-/web3-eth-iban-1.0.0-beta.35.tgz",
       "integrity": "sha512-H5wkcNcAIc+h/WoDIKv7ZYmrM2Xqu3O7jBQl1IWo73EDVQji+AoB2i3J8tuwI1yZRInRwrfpI3Zuwuf54hXHmQ==",
       "dev": true,
+      "optional": true,
       "requires": {
         "bn.js": "4.11.6",
         "web3-utils": "1.0.0-beta.35"
@@ -11367,7 +11492,8 @@
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
           "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -11376,6 +11502,7 @@
       "resolved": "https://registry.npmjs.org/web3-eth-personal/-/web3-eth-personal-1.0.0-beta.35.tgz",
       "integrity": "sha512-AcM9nnlxu7ZRRxPvkrFB9eLxMM4A2cPfj2aCg21Wb2EpMnhR+b/O1cT33k7ApRowoMpM+T9M8vx2oPNwXfaCOQ==",
       "dev": true,
+      "optional": true,
       "requires": {
         "web3-core": "1.0.0-beta.35",
         "web3-core-helpers": "1.0.0-beta.35",
@@ -11389,6 +11516,7 @@
       "resolved": "https://registry.npmjs.org/web3-net/-/web3-net-1.0.0-beta.35.tgz",
       "integrity": "sha512-bbwaQ/KohGjIJ6HAKbZ6KrklCAaG6/B7hIbAbVLSFLxF+Yz9lmAgQYaDInpidpC/NLb3WOmcbRF+P77J4qMVIA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "web3-core": "1.0.0-beta.35",
         "web3-core-method": "1.0.0-beta.35",
@@ -11427,13 +11555,12 @@
           "resolved": "https://registry.npmjs.org/eth-sig-util/-/eth-sig-util-1.4.2.tgz",
           "integrity": "sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=",
           "requires": {
-            "ethereumjs-abi": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
             "ethereumjs-util": "^5.1.1"
           },
           "dependencies": {
             "ethereumjs-abi": {
               "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
-              "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+              "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
               "requires": {
                 "bn.js": "^4.10.0",
                 "ethereumjs-util": "^5.0.0"
@@ -11450,8 +11577,8 @@
           "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
           "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
           "requires": {
-            "bn.js": "^4.10.0",
-            "ethereumjs-util": "^5.0.0"
+            "bn.js": "^4.11.8",
+            "ethereumjs-util": "^6.0.0"
           }
         },
         "ethereumjs-block": {
@@ -11481,6 +11608,7 @@
       "resolved": "https://registry.npmjs.org/web3-providers-http/-/web3-providers-http-1.0.0-beta.35.tgz",
       "integrity": "sha512-DcIMFq52Fb08UpWyZ3ZlES6NsNqJnco4hBS/Ej6eOcASfuUayPI+GLkYVZsnF3cBYqlH+DOKuArcKSuIxK7jIA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "web3-core-helpers": "1.0.0-beta.35",
         "xhr2-cookies": "1.1.0"
@@ -11491,6 +11619,7 @@
       "resolved": "https://registry.npmjs.org/web3-providers-ipc/-/web3-providers-ipc-1.0.0-beta.35.tgz",
       "integrity": "sha512-iB0FG0HcpUnayfa8pn4guqEQ4Y1nrroi/jffdtQgFkrNt0sD3fMSwwC0AbmECqj3tDLl0e1slBR0RENll+ZF0g==",
       "dev": true,
+      "optional": true,
       "requires": {
         "oboe": "2.1.3",
         "underscore": "1.8.3",
@@ -11502,25 +11631,23 @@
       "resolved": "https://registry.npmjs.org/web3-providers-ws/-/web3-providers-ws-1.0.0-beta.35.tgz",
       "integrity": "sha512-Cx64NgDStynKaUGDIIOfaCd0fZusL8h5avKTkdTjUu2aHhFJhZoVBGVLhoDtUaqZGWIZGcBJOoVf2JkGUOjDRQ==",
       "dev": true,
+      "optional": true,
       "requires": {
         "underscore": "1.8.3",
-        "web3-core-helpers": "1.0.0-beta.35",
-        "websocket": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2"
+        "web3-core-helpers": "1.0.0-beta.35"
       },
       "dependencies": {
         "debug": {
           "version": "2.6.9",
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "dev": true,
           "requires": {
             "ms": "2.0.0"
           }
         },
         "websocket": {
           "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-          "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
-          "dev": true,
+          "from": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
           "requires": {
             "debug": "^2.2.0",
             "nan": "^2.3.3",
@@ -11548,6 +11675,7 @@
       "resolved": "https://registry.npmjs.org/web3-utils/-/web3-utils-1.0.0-beta.35.tgz",
       "integrity": "sha512-Dq6f0SOKj3BDFRgOPnE6ALbzBDCKVIW8mKWVf7tGVhTDHf+wQaWwQSC3aArFSqdExB75BPBPyDpuMTNszhljpA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "bn.js": "4.11.6",
         "eth-lib": "0.1.27",
@@ -11562,13 +11690,15 @@
           "version": "4.11.6",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.6.tgz",
           "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "utf8": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
           "integrity": "sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -11931,6 +12061,7 @@
       "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
       "integrity": "sha512-nnWLa/NwZSt4KQJu51MYlCcSQ5g7INpOrOMt4XV8j4dqTXdmlUmSHQ8/oLC069ckre0fRsgfvsKwbTdtKLCDkA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "async-limiter": "~1.0.0",
         "safe-buffer": "~5.1.0",
@@ -11953,6 +12084,7 @@
       "resolved": "https://registry.npmjs.org/xhr-request/-/xhr-request-1.1.0.tgz",
       "integrity": "sha512-Y7qzEaR3FDtL3fP30k9wO/e+FBnBByZeybKOhASsGP30NIkRAAkKD/sCnLvgEfAIEC1rcmK7YG8f4oEnIrrWzA==",
       "dev": true,
+      "optional": true,
       "requires": {
         "buffer-to-arraybuffer": "^0.0.5",
         "object-assign": "^4.1.1",
@@ -11968,6 +12100,7 @@
       "resolved": "https://registry.npmjs.org/xhr-request-promise/-/xhr-request-promise-0.1.2.tgz",
       "integrity": "sha1-NDxE0e53JrhkgGloLQ+EDIO0Jh0=",
       "dev": true,
+      "optional": true,
       "requires": {
         "xhr-request": "^1.0.1"
       }
@@ -11977,6 +12110,7 @@
       "resolved": "https://registry.npmjs.org/xhr2-cookies/-/xhr2-cookies-1.1.0.tgz",
       "integrity": "sha1-fXdEnQmZGX8VXLc7I99yUF7YnUg=",
       "dev": true,
+      "optional": true,
       "requires": {
         "cookiejar": "^2.1.1"
       }