diff --git a/package-lock.json b/package-lock.json
index 58a254f..6b86f23 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3669,7 +3669,7 @@
         },
         "array-flatten": {
           "version": "1.1.1",
-          "resolved": "http://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+          "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
           "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=",
           "dev": true,
           "optional": true
@@ -3870,7 +3870,7 @@
           "dependencies": {
             "jsesc": {
               "version": "1.3.0",
-              "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
               "integrity": "sha1-RsP+yMGJKxKwgz25vHYiF226s0s=",
               "dev": true
             },
@@ -4039,13 +4039,13 @@
         },
         "babel-plugin-syntax-async-functions": {
           "version": "6.13.0",
-          "resolved": "http://registry.npmjs.org/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz",
+          "resolved": "https://registry.npmjs.org/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz",
           "integrity": "sha1-ytnK0RkbWtY0vzCuCHI5HgZHvpU=",
           "dev": true
         },
         "babel-plugin-syntax-exponentiation-operator": {
           "version": "6.13.0",
-          "resolved": "http://registry.npmjs.org/babel-plugin-syntax-exponentiation-operator/-/babel-plugin-syntax-exponentiation-operator-6.13.0.tgz",
+          "resolved": "https://registry.npmjs.org/babel-plugin-syntax-exponentiation-operator/-/babel-plugin-syntax-exponentiation-operator-6.13.0.tgz",
           "integrity": "sha1-nufoM3KQ2pUoggGmpX9BcDF4MN4=",
           "dev": true
         },
@@ -4464,7 +4464,7 @@
         },
         "babelify": {
           "version": "7.3.0",
-          "resolved": "http://registry.npmjs.org/babelify/-/babelify-7.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/babelify/-/babelify-7.3.0.tgz",
           "integrity": "sha1-qlau3nBn/XvVSWZu4W3ChQh+iOU=",
           "dev": true,
           "requires": {
@@ -4608,7 +4608,7 @@
         },
         "bl": {
           "version": "1.2.2",
-          "resolved": "http://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
+          "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
           "integrity": "sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==",
           "dev": true,
           "optional": true,
@@ -4725,7 +4725,7 @@
         },
         "browserify-aes": {
           "version": "1.2.0",
-          "resolved": "http://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
           "integrity": "sha512-+7CHXqGuspUn/Sl5aO7Ea0xWGAtETPXNSAjHo48JfLdPWcMng33Xe4znFvQweqc/uzk5zSOI3H52CYnjCfb5hA==",
           "requires": {
             "buffer-xor": "^1.0.3",
@@ -4759,7 +4759,7 @@
         },
         "browserify-rsa": {
           "version": "4.0.1",
-          "resolved": "http://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.0.1.tgz",
           "integrity": "sha1-IeCr+vbyApzy+vsTNWenAdQTVSQ=",
           "requires": {
             "bn.js": "^4.1.0",
@@ -5039,7 +5039,7 @@
         },
         "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=",
           "requires": {
             "ansi-styles": "^2.2.1",
@@ -5237,7 +5237,7 @@
         },
         "commander": {
           "version": "2.8.1",
-          "resolved": "http://registry.npmjs.org/commander/-/commander-2.8.1.tgz",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.8.1.tgz",
           "integrity": "sha1-Br42f+v9oMMwqh4qBy09yXYkJdQ=",
           "requires": {
             "graceful-readlink": ">= 1.0.0"
@@ -5424,7 +5424,7 @@
         },
         "create-hash": {
           "version": "1.2.0",
-          "resolved": "http://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
           "integrity": "sha512-z00bCGNHDG8mHAkP7CtT1qVu+bFQUPjYq/4Iv3C3kWjTFV10zIjfSoeqXo9Asws8gwSHDGj/hl2u4OGIjapeCg==",
           "requires": {
             "cipher-base": "^1.0.1",
@@ -5436,7 +5436,7 @@
         },
         "create-hmac": {
           "version": "1.1.7",
-          "resolved": "http://registry.npmjs.org/create-hmac/-/create-hmac-1.1.7.tgz",
+          "resolved": "https://registry.npmjs.org/create-hmac/-/create-hmac-1.1.7.tgz",
           "integrity": "sha512-MJG9liiZ+ogc4TzUwuvbER1JRdgvUFSB5+VR/g5h82fGaIRWMWddtKBHi7/sVhfjQZ6SehlyhvQYrcYkaUIpLg==",
           "requires": {
             "cipher-base": "^1.0.3",
@@ -5563,7 +5563,7 @@
           "dependencies": {
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
               "dev": true,
               "optional": true
@@ -5642,14 +5642,14 @@
           "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=",
               "dev": true,
               "optional": true
             },
             "get-stream": {
               "version": "2.3.1",
-              "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-2.3.1.tgz",
+              "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-2.3.1.tgz",
               "integrity": "sha1-Xzj5PzRgCWZu4BUKBUFn+Rvdld4=",
               "dev": true,
               "optional": true,
@@ -5660,7 +5660,7 @@
             },
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
               "dev": true,
               "optional": true
@@ -5827,7 +5827,7 @@
         },
         "diffie-hellman": {
           "version": "5.0.3",
-          "resolved": "http://registry.npmjs.org/diffie-hellman/-/diffie-hellman-5.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/diffie-hellman/-/diffie-hellman-5.0.3.tgz",
           "integrity": "sha512-kqag/Nl+f3GwyK25fhUMYj81BUOrZ9IuJsjIcDE5icNM9FJHAVm3VcUDxdLPoQtTuUylWm6ZIknYJwwaPxsUzg==",
           "requires": {
             "bn.js": "^4.1.0",
@@ -6424,7 +6424,7 @@
           "dependencies": {
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
               "dev": true
             }
@@ -6445,7 +6445,7 @@
         },
         "eth-json-rpc-middleware": {
           "version": "1.6.0",
-          "resolved": "http://registry.npmjs.org/eth-json-rpc-middleware/-/eth-json-rpc-middleware-1.6.0.tgz",
+          "resolved": "https://registry.npmjs.org/eth-json-rpc-middleware/-/eth-json-rpc-middleware-1.6.0.tgz",
           "integrity": "sha512-tDVCTlrUvdqHKqivYMjtFZsdD7TtpNLBCfKAcOpaVs7orBMS/A8HWro6dIzNtTZIR05FAbJ3bioFOnZpuCew9Q==",
           "dev": true,
           "requires": {
@@ -6472,7 +6472,7 @@
             },
             "ethereumjs-block": {
               "version": "1.7.1",
-              "resolved": "http://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
+              "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
               "integrity": "sha512-B+sSdtqm78fmKkBq78/QLKJbu/4Ts4P2KFISdgcuZUPDm9x+N7qgBPIIFUGbaakQh8bzuquiRVbdmvPKqbILRg==",
               "dev": true,
               "requires": {
@@ -6633,7 +6633,7 @@
             },
             "ethereumjs-block": {
               "version": "1.7.1",
-              "resolved": "http://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
+              "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
               "integrity": "sha512-B+sSdtqm78fmKkBq78/QLKJbu/4Ts4P2KFISdgcuZUPDm9x+N7qgBPIIFUGbaakQh8bzuquiRVbdmvPKqbILRg==",
               "dev": true,
               "requires": {
@@ -6646,7 +6646,7 @@
             },
             "ethereumjs-vm": {
               "version": "2.3.4",
-              "resolved": "http://registry.npmjs.org/ethereumjs-vm/-/ethereumjs-vm-2.3.4.tgz",
+              "resolved": "https://registry.npmjs.org/ethereumjs-vm/-/ethereumjs-vm-2.3.4.tgz",
               "integrity": "sha512-Y4SlzNDqxrCO58jhp98HdnZVdjOqB+HC0hoU+N/DEp1aU+hFkRX/nru5F7/HkQRPIlA6aJlQp/xIA6xZs1kspw==",
               "dev": true,
               "requires": {
@@ -6665,7 +6665,7 @@
             },
             "fs-extra": {
               "version": "0.30.0",
-              "resolved": "http://registry.npmjs.org/fs-extra/-/fs-extra-0.30.0.tgz",
+              "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-0.30.0.tgz",
               "integrity": "sha1-8jP/zAjU2n1DLapEl3aYnbHfk/A=",
               "dev": true,
               "requires": {
@@ -6678,7 +6678,7 @@
             },
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
               "dev": true
             },
@@ -6703,7 +6703,7 @@
             },
             "web3-provider-engine": {
               "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==",
               "dev": true,
               "requires": {
@@ -6748,7 +6748,7 @@
           "dependencies": {
             "ethereumjs-util": {
               "version": "4.5.0",
-              "resolved": "http://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz",
+              "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz",
               "integrity": "sha1-PpQosxfuvaPXJg2FT93alUsfG8Y=",
               "dev": true,
               "requires": {
@@ -7435,7 +7435,7 @@
         },
         "finalhandler": {
           "version": "1.1.1",
-          "resolved": "http://registry.npmjs.org/finalhandler/-/finalhandler-1.1.1.tgz",
+          "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.1.tgz",
           "integrity": "sha512-Y1GUDo39ez4aHAw7MysnUD5JzYX+WaIj8I57kO3aEPT1fFRL4sr7mjei97FgnwhAyyzRYmQZaTHb2+9uZ1dPtg==",
           "dev": true,
           "optional": true,
@@ -8155,7 +8155,7 @@
         },
         "get-stream": {
           "version": "3.0.0",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
           "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
           "dev": true,
           "optional": true
@@ -8437,7 +8437,7 @@
         },
         "http-errors": {
           "version": "1.6.3",
-          "resolved": "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+          "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
           "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
           "dev": true,
           "optional": true,
@@ -9157,7 +9157,7 @@
         },
         "jsesc": {
           "version": "0.5.0",
-          "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
           "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
           "dev": true
         },
@@ -9226,13 +9226,13 @@
         },
         "json5": {
           "version": "0.5.1",
-          "resolved": "http://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
           "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
           "dev": true
         },
         "jsonfile": {
           "version": "2.4.0",
-          "resolved": "http://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz",
           "integrity": "sha1-NzaitCi4e72gzIO1P6PWM6NcKug=",
           "requires": {
             "graceful-fs": "^4.1.6"
@@ -9320,7 +9320,7 @@
         },
         "level-iterator-stream": {
           "version": "1.3.1",
-          "resolved": "http://registry.npmjs.org/level-iterator-stream/-/level-iterator-stream-1.3.1.tgz",
+          "resolved": "https://registry.npmjs.org/level-iterator-stream/-/level-iterator-stream-1.3.1.tgz",
           "integrity": "sha1-5Dt4sagUPm+pek9IXrjqUwNS8u0=",
           "dev": true,
           "requires": {
@@ -9341,7 +9341,7 @@
             },
             "readable-stream": {
               "version": "1.1.14",
-              "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+              "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
               "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
               "dev": true,
               "requires": {
@@ -9411,7 +9411,7 @@
           "dependencies": {
             "readable-stream": {
               "version": "1.0.34",
-              "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+              "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
               "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
               "dev": true,
               "requires": {
@@ -9658,7 +9658,7 @@
         },
         "load-json-file": {
           "version": "1.1.0",
-          "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
           "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
           "requires": {
             "graceful-fs": "^4.1.2",
@@ -9670,7 +9670,7 @@
           "dependencies": {
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw="
             }
           }
@@ -9859,7 +9859,7 @@
         },
         "lru-cache": {
           "version": "3.2.0",
-          "resolved": "http://registry.npmjs.org/lru-cache/-/lru-cache-3.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-3.2.0.tgz",
           "integrity": "sha1-cXibO39Tmb7IVl3aOKow0qCX7+4=",
           "dev": true,
           "requires": {
@@ -9933,7 +9933,7 @@
         },
         "media-typer": {
           "version": "0.3.0",
-          "resolved": "http://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
           "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=",
           "dev": true,
           "optional": true
@@ -9996,7 +9996,7 @@
         },
         "merkle-patricia-tree": {
           "version": "2.3.1",
-          "resolved": "http://registry.npmjs.org/merkle-patricia-tree/-/merkle-patricia-tree-2.3.1.tgz",
+          "resolved": "https://registry.npmjs.org/merkle-patricia-tree/-/merkle-patricia-tree-2.3.1.tgz",
           "integrity": "sha512-Qp9Mpb3xazznXzzGQBqHbqCpT2AR9joUOHYYPiQjYCarrdCPCnLWXo4BFv77y4xN26KR224xoU1n/qYY7RYYgw==",
           "dev": true,
           "requires": {
@@ -10012,7 +10012,7 @@
           "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=",
               "dev": true
             },
@@ -10153,7 +10153,7 @@
         },
         "minimist": {
           "version": "0.0.8",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
           "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
         },
         "mississippi": {
@@ -10205,7 +10205,7 @@
         },
         "mkdirp": {
           "version": "0.5.1",
-          "resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
           "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
           "requires": {
             "minimist": "0.0.8"
@@ -10323,7 +10323,7 @@
         },
         "nan": {
           "version": "2.10.0",
-          "resolved": "http://registry.npmjs.org/nan/-/nan-2.10.0.tgz",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.10.0.tgz",
           "integrity": "sha512-bAdJv7fBLhWC+/Bls0Oza+mvTaNQtP+1RyhhhvD95pgUJz6XM5IzgmxOkItJ9tkoCiplvAnXI1tNmmUD/eScyA=="
         },
         "nano-json-stream-parser": {
@@ -10375,7 +10375,7 @@
         },
         "node-fetch": {
           "version": "2.1.2",
-          "resolved": "http://registry.npmjs.org/node-fetch/-/node-fetch-2.1.2.tgz",
+          "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.1.2.tgz",
           "integrity": "sha1-q4hOjn5X44qUR1POxwb3iNF2i7U=",
           "dev": true
         },
@@ -11544,7 +11544,7 @@
         },
         "os-homedir": {
           "version": "1.0.2",
-          "resolved": "http://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
+          "resolved": "https://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
           "integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
           "dev": true
         },
@@ -11558,7 +11558,7 @@
         },
         "os-tmpdir": {
           "version": "1.0.2",
-          "resolved": "http://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
+          "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
           "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ="
         },
         "p-cancelable": {
@@ -11697,7 +11697,7 @@
         },
         "path-is-absolute": {
           "version": "1.0.1",
-          "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
           "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
         },
         "path-is-inside": {
@@ -11734,7 +11734,7 @@
           "dependencies": {
             "pify": {
               "version": "2.3.0",
-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
               "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw="
             }
           }
@@ -12046,7 +12046,7 @@
         },
         "query-string": {
           "version": "5.1.1",
-          "resolved": "http://registry.npmjs.org/query-string/-/query-string-5.1.1.tgz",
+          "resolved": "https://registry.npmjs.org/query-string/-/query-string-5.1.1.tgz",
           "integrity": "sha512-gjWOsm2SoGlgLEdAGt7a6slVOk9mGiXmPFMqrEhLQ68rhQuBnpfs3+EmlvqKyxnCo9/PPlF+9MtY02S1aFg+Jw==",
           "dev": true,
           "optional": true,
@@ -12131,7 +12131,7 @@
         },
         "readable-stream": {
           "version": "2.3.6",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
           "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "requires": {
             "core-util-is": "~1.0.0",
@@ -12150,7 +12150,7 @@
             },
             "string_decoder": {
               "version": "1.1.1",
-              "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+              "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
               "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
               "requires": {
                 "safe-buffer": "~5.1.0"
@@ -12206,7 +12206,7 @@
         },
         "regexpu-core": {
           "version": "2.0.0",
-          "resolved": "http://registry.npmjs.org/regexpu-core/-/regexpu-core-2.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-2.0.0.tgz",
           "integrity": "sha1-SdA4g3uNz4v6W5pCE5k45uoq4kA=",
           "dev": true,
           "requires": {
@@ -12217,13 +12217,13 @@
         },
         "regjsgen": {
           "version": "0.2.0",
-          "resolved": "http://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
           "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=",
           "dev": true
         },
         "regjsparser": {
           "version": "0.1.5",
-          "resolved": "http://registry.npmjs.org/regjsparser/-/regjsparser-0.1.5.tgz",
+          "resolved": "https://registry.npmjs.org/regjsparser/-/regjsparser-0.1.5.tgz",
           "integrity": "sha1-fuj4Tcb6eS0/0K4ijSS9lJ6tIFw=",
           "dev": true,
           "requires": {
@@ -12661,7 +12661,7 @@
         },
         "sha.js": {
           "version": "2.4.11",
-          "resolved": "http://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
+          "resolved": "https://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
           "integrity": "sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==",
           "requires": {
             "inherits": "^2.0.1",
@@ -13125,7 +13125,7 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
         },
@@ -13141,7 +13141,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "requires": {
             "ansi-regex": "^2.0.0"
@@ -13290,7 +13290,7 @@
           "dependencies": {
             "minimist": {
               "version": "1.2.0",
-              "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+              "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
               "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
               "dev": true
             }
@@ -13340,7 +13340,7 @@
           "dependencies": {
             "bluebird": {
               "version": "2.11.0",
-              "resolved": "http://registry.npmjs.org/bluebird/-/bluebird-2.11.0.tgz",
+              "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-2.11.0.tgz",
               "integrity": "sha1-U0uQM8AiyVecVro7Plpcqvu2UOE=",
               "dev": true,
               "optional": true
@@ -13390,7 +13390,7 @@
         },
         "through": {
           "version": "2.3.8",
-          "resolved": "http://registry.npmjs.org/through/-/through-2.3.8.tgz",
+          "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
           "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
         },
         "through2": {
@@ -13647,7 +13647,7 @@
         },
         "underscore": {
           "version": "1.8.3",
-          "resolved": "http://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
+          "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
           "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI=",
           "dev": true,
           "optional": true
@@ -14096,7 +14096,7 @@
             },
             "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=",
               "dev": true,
               "optional": true
@@ -14247,7 +14247,7 @@
             },
             "ethereumjs-block": {
               "version": "1.7.1",
-              "resolved": "http://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
+              "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
               "integrity": "sha512-B+sSdtqm78fmKkBq78/QLKJbu/4Ts4P2KFISdgcuZUPDm9x+N7qgBPIIFUGbaakQh8bzuquiRVbdmvPKqbILRg==",
               "dev": true,
               "requires": {
@@ -14366,7 +14366,7 @@
             },
             "utf8": {
               "version": "2.1.1",
-              "resolved": "http://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
+              "resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
               "integrity": "sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g=",
               "dev": true,
               "optional": true
@@ -14643,7 +14643,7 @@
         },
         "whatwg-fetch": {
           "version": "2.0.4",
-          "resolved": "http://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz",
+          "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz",
           "integrity": "sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng==",
           "dev": true
         },
@@ -14680,7 +14680,7 @@
         },
         "wrap-ansi": {
           "version": "2.1.0",
-          "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
           "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
           "requires": {
             "string-width": "^1.0.1",
@@ -15514,8 +15514,7 @@
     "left-pad": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz",
-      "integrity": "sha512-XI5MPzVNApjAyhQzphX8BkmKsKUxD4LdyK24iZeQGinBN9yTQT3bFlCBy/aVx2HrNcqQGsdot8ghrjyrvMCoEA==",
-      "dev": true
+      "integrity": "sha512-XI5MPzVNApjAyhQzphX8BkmKsKUxD4LdyK24iZeQGinBN9yTQT3bFlCBy/aVx2HrNcqQGsdot8ghrjyrvMCoEA=="
     },
     "level-codec": {
       "version": "7.0.1",
@@ -16224,9 +16223,9 @@
       }
     },
     "pathval": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
-      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
+      "integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==",
       "dev": true
     },
     "pbkdf2": {