diff --git a/package-lock.json b/package-lock.json
index 0b85343..003e2bf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -31,11 +31,35 @@
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 		},
+		"@types/bn.js": {
+			"version": "4.11.6",
+			"resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-4.11.6.tgz",
+			"integrity": "sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==",
+			"requires": {
+				"@types/node": "*"
+			}
+		},
 		"@types/node": {
 			"version": "10.12.0",
 			"resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.0.tgz",
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 		},
+		"@types/pbkdf2": {
+			"version": "3.1.0",
+			"resolved": "https://registry.npmjs.org/@types/pbkdf2/-/pbkdf2-3.1.0.tgz",
+			"integrity": "sha512-Cf63Rv7jCQ0LaL8tNXmEyqTHuIJxRdlS5vMh1mj5voN4+QFhVZnlZruezqpWYDiJ8UTzhP0VmeLXCmBk66YrMQ==",
+			"requires": {
+				"@types/node": "*"
+			}
+		},
+		"@types/secp256k1": {
+			"version": "4.0.3",
+			"resolved": "https://registry.npmjs.org/@types/secp256k1/-/secp256k1-4.0.3.tgz",
+			"integrity": "sha512-Da66lEIFeIz9ltsdMZcpQvmrmmoqrfju8pm1BH8WbYjZSwUgCwXLb9C+9XYogwBITnbsSaMdVPb2ekf7TV+03w==",
+			"requires": {
+				"@types/node": "*"
+			}
+		},
 		"abab": {
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 			"resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
@@ -88,7 +112,8 @@
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 			"resolved": "http://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
-			"integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc="
+			"integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc=",
+			"optional": true
 		},
 		"acorn-globals": {
 			"version": "1.0.9",
@@ -340,7 +365,7 @@
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 				"chalk": {
 					"version": "1.1.3",
-					"resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+					"resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
 					"integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
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@@ -1213,6 +1238,14 @@
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 			"integrity": "sha1-eAqZyE59YAJgNhURxId2E78k9rs="
 		},
+		"base-x": {
+			"version": "3.0.9",
+			"resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.9.tgz",
+			"integrity": "sha512-H7JU6iBHTal1gp56aKoaa//YUxEaAOUiydvrV/pILqIHXTtqxSkATOnDA2u+jZ/61sD+L/412+7kzXRtWukhpQ==",
+			"requires": {
+				"safe-buffer": "^5.0.1"
+			}
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 		"base64-js": {
 			"version": "1.3.0",
 			"resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
@@ -1231,10 +1264,6 @@
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 		},
-		"bignumber.js": {
-			"version": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
-			"from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
-		},
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 			"resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.12.0.tgz",
@@ -1267,6 +1296,11 @@
 				"safe-buffer": "^5.1.1"
 			}
 		},
+		"blakejs": {
+			"version": "1.1.1",
+			"resolved": "https://registry.npmjs.org/blakejs/-/blakejs-1.1.1.tgz",
+			"integrity": "sha512-bLG6PHOCZJKNshTjGRBvET0vTciwQE6zFKOKKXPDJfwFBd4Ac0yBfPZqcGvGJap50l7ktvlpFqc2jGVaUgbJgg=="
+		},
 		"block-stream": {
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@@ -1410,6 +1444,24 @@
 				"electron-to-chromium": "^1.3.47"
 			}
 		},
+		"bs58": {
+			"version": "4.0.1",
+			"resolved": "https://registry.npmjs.org/bs58/-/bs58-4.0.1.tgz",
+			"integrity": "sha1-vhYedsNU9veIrkBx9j806MTwpCo=",
+			"requires": {
+				"base-x": "^3.0.2"
+			}
+		},
+		"bs58check": {
+			"version": "2.1.2",
+			"resolved": "https://registry.npmjs.org/bs58check/-/bs58check-2.1.2.tgz",
+			"integrity": "sha512-0TS1jicxdU09dwJMNZtVAfzPi6Q6QeN0pM1Fkzrjn+XYHvzMKPU3pHVpva+769iNVSfIYWf7LJ6WR+BuuMf8cA==",
+			"requires": {
+				"bs58": "^4.0.0",
+				"create-hash": "^1.1.0",
+				"safe-buffer": "^5.1.2"
+			}
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 		"buffer": {
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 			"resolved": "https://registry.npmjs.org/buffer/-/buffer-5.2.1.tgz",
@@ -1950,7 +2002,7 @@
 				},
 				"rimraf": {
 					"version": "2.4.5",
-					"resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.4.5.tgz",
+					"resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.4.5.tgz",
 					"integrity": "sha1-7nEM5dk6j9uFb7Xqj/Di11k0sto=",
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@@ -2060,7 +2112,8 @@
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 			"resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.4.tgz",
-			"integrity": "sha512-+7prCSORpXNeR4/fUP3rL+TzqtiFfhMvTd7uEqMdgPvLPt4+uzFUeufx5RHjGTACCargg/DiEt/moMQmvnfkog=="
+			"integrity": "sha512-+7prCSORpXNeR4/fUP3rL+TzqtiFfhMvTd7uEqMdgPvLPt4+uzFUeufx5RHjGTACCargg/DiEt/moMQmvnfkog==",
+			"optional": true
 		},
 		"cssstyle": {
 			"version": "0.2.37",
@@ -2187,7 +2240,7 @@
 			"dependencies": {
 				"file-type": {
 					"version": "3.9.0",
-					"resolved": "http://registry.npmjs.org/file-type/-/file-type-3.9.0.tgz",
+					"resolved": "https://registry.npmjs.org/file-type/-/file-type-3.9.0.tgz",
 					"integrity": "sha1-JXoHg4TR24CHvESdEH1SpSZyuek="
 				},
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@@ -2796,6 +2849,16 @@
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 				"ethereumjs-util": "^5.1.1"
+			},
+			"dependencies": {
+				"ethereumjs-abi": {
+					"version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#2863c40e0982acfc0b7163f0285d4c56427c7799",
+					"from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+					"requires": {
+						"bn.js": "^4.10.0",
+						"ethereumjs-util": "^5.0.0"
+					}
+				}
 			}
 		},
 		"eth-tx-summary": {
@@ -2872,7 +2935,7 @@
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 					"version": "13.8.0",
-					"resolved": "http://registry.npmjs.org/web3-provider-engine/-/web3-provider-engine-13.8.0.tgz",
+					"resolved": "https://registry.npmjs.org/web3-provider-engine/-/web3-provider-engine-13.8.0.tgz",
 					"integrity": "sha512-fZXhX5VWwWpoFfrfocslyg6P7cN3YWPG/ASaevNfeO80R+nzgoPUBXcWQekSGSsNDkeRTis4aMmpmofYf1TNtQ==",
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@@ -2903,12 +2966,106 @@
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 			"integrity": "sha1-L9w1dvIykDNYl26znaeDIT/5Uj8="
 		},
-		"ethereumjs-abi": {
-			"version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#2863c40e0982acfc0b7163f0285d4c56427c7799",
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-			"requires": {
-				"bn.js": "^4.10.0",
-				"ethereumjs-util": "^5.0.0"
+		"ethereum-cryptography": {
+			"version": "0.1.3",
+			"resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-0.1.3.tgz",
+			"integrity": "sha512-w8/4x1SGGzc+tO97TASLja6SLd3fRIK2tLVcV2Gx4IB21hE19atll5Cq9o3d0ZmAYC/8aw0ipieTSiekAea4SQ==",
+			"requires": {
+				"@types/pbkdf2": "^3.0.0",
+				"@types/secp256k1": "^4.0.1",
+				"blakejs": "^1.1.0",
+				"browserify-aes": "^1.2.0",
+				"bs58check": "^2.1.2",
+				"create-hash": "^1.2.0",
+				"create-hmac": "^1.1.7",
+				"hash.js": "^1.1.7",
+				"keccak": "^3.0.0",
+				"pbkdf2": "^3.0.17",
+				"randombytes": "^2.1.0",
+				"safe-buffer": "^5.1.2",
+				"scrypt-js": "^3.0.0",
+				"secp256k1": "^4.0.1",
+				"setimmediate": "^1.0.5"
+			},
+			"dependencies": {
+				"bn.js": {
+					"version": "4.12.0",
+					"resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
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+				"elliptic": {
+					"version": "6.5.4",
+					"resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+					"integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
+					"requires": {
+						"bn.js": "^4.11.9",
+						"brorand": "^1.1.0",
+						"hash.js": "^1.0.0",
+						"hmac-drbg": "^1.0.1",
+						"inherits": "^2.0.4",
+						"minimalistic-assert": "^1.0.1",
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+							"resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+					"resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
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+						"inherits": "^2.0.3",
+						"minimalistic-assert": "^1.0.1"
+					}
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+					"version": "3.0.2",
+					"resolved": "https://registry.npmjs.org/keccak/-/keccak-3.0.2.tgz",
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+					"requires": {
+						"node-addon-api": "^2.0.0",
+						"node-gyp-build": "^4.2.0",
+						"readable-stream": "^3.6.0"
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+				"randombytes": {
+					"version": "2.1.0",
+					"resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
+					"integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
+					"requires": {
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+					}
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+				"readable-stream": {
+					"version": "3.6.0",
+					"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+					"integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+					"requires": {
+						"inherits": "^2.0.3",
+						"string_decoder": "^1.1.1",
+						"util-deprecate": "^1.0.1"
+					}
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+				"scrypt-js": {
+					"version": "3.0.1",
+					"resolved": "http://registry.npmjs.org/scrypt-js/-/scrypt-js-3.0.1.tgz",
+					"integrity": "sha512-cdwTTnqPu0Hyvf5in5asVdZocVDTNRmR7XEcJuIzMjJeSHybHl7vpB66AzwTaIg6CLSbtjcxc8fqcySfnTkccA=="
+				},
+				"secp256k1": {
+					"version": "4.0.3",
+					"resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-4.0.3.tgz",
+					"integrity": "sha512-NLZVf+ROMxwtEj3Xa562qgv2BK5e2WNmXPiOdVIPLgs6lyTzMvBq0aWTYMI5XCP9jZMVKOcqZLw/Wc4vDkuxhA==",
+					"requires": {
+						"elliptic": "^6.5.4",
+						"node-addon-api": "^2.0.0",
+						"node-gyp-build": "^4.2.0"
+					}
+				}
 			}
 		},
 		"ethereumjs-account": {
@@ -3084,7 +3241,7 @@
 				},
 				"uuid": {
 					"version": "2.0.1",
-					"resolved": "http://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
+					"resolved": "https://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
 					"integrity": "sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w="
 				}
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@@ -3189,9 +3346,13 @@
 			"dependencies": {
 				"async": {
 					"version": "1.5.2",
-					"resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+					"resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
 					"integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
 				},
+				"bignumber.js": {
+					"version": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
+					"from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
+				},
 				"fs-extra": {
 					"version": "2.1.2",
 					"resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-2.1.2.tgz",
@@ -3287,7 +3448,7 @@
 						},
 						"web3": {
 							"version": "0.16.0",
-							"resolved": "http://registry.npmjs.org/web3/-/web3-0.16.0.tgz",
+							"resolved": "https://registry.npmjs.org/web3/-/web3-0.16.0.tgz",
 							"integrity": "sha1-pFVBdc1GKUMDWx8dOUMvdBxrYBk=",
 							"requires": {
 								"bignumber.js": "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9",
@@ -3298,7 +3459,7 @@
 							"dependencies": {
 								"bignumber.js": {
 									"version": "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9",
-									"from": "git+https://github.com/debris/bignumber.js.git#master"
+									"from": "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9"
 								}
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@@ -4066,7 +4227,8 @@
 				},
 				"ansi-regex": {
 					"version": "2.1.1",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"aproba": {
 					"version": "1.2.0",
@@ -4084,11 +4246,13 @@
 				},
 				"balanced-match": {
 					"version": "1.0.0",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"brace-expansion": {
 					"version": "1.1.11",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"balanced-match": "^1.0.0",
 						"concat-map": "0.0.1"
@@ -4101,15 +4265,18 @@
 				},
 				"code-point-at": {
 					"version": "1.1.0",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"concat-map": {
 					"version": "0.0.1",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"console-control-strings": {
 					"version": "1.1.0",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"core-util-is": {
 					"version": "1.0.2",
@@ -4212,7 +4379,8 @@
 				},
 				"inherits": {
 					"version": "2.0.3",
-					"bundled": true
+					"bundled": true,
+					"optional": true
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 				"ini": {
 					"version": "1.3.5",
@@ -4222,6 +4390,7 @@
 				"is-fullwidth-code-point": {
 					"version": "1.0.0",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"number-is-nan": "^1.0.0"
 					}
@@ -4234,17 +4403,20 @@
 				"minimatch": {
 					"version": "3.0.4",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"brace-expansion": "^1.1.7"
 					}
 				},
 				"minimist": {
 					"version": "0.0.8",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"minipass": {
 					"version": "2.2.4",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"safe-buffer": "^5.1.1",
 						"yallist": "^3.0.0"
@@ -4261,6 +4433,7 @@
 				"mkdirp": {
 					"version": "0.5.1",
 					"bundled": true,
+					"optional": true,
 					"requires": {
 						"minimist": "0.0.8"
 					}
@@ -4333,7 +4506,8 @@
 				},
 				"number-is-nan": {
 					"version": "1.0.1",
-					"bundled": true
+					"bundled": true,
+					"optional": true
 				},
 				"object-assign": {
 					"version": "4.1.1",
@@ -4343,6 +4517,7 @@
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+					"version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
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@@ -11500,9 +11794,13 @@
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@@ -13870,6 +14263,12 @@
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 								"xhr2": "*",
 								"xmlhttprequest": "*"
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+									"from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
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