diff --git a/package-lock.json b/package-lock.json
index 926c57f..89381b9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -369,6 +369,17 @@
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+      },
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+          "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
+          "dev": true,
+          "requires": {
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+          }
+        }
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@@ -493,9 +504,9 @@
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-      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
-      "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.2.tgz",
+      "integrity": "sha512-6xrbvN0MOBKSJDdonmSSz2OwFSgxRaVtBDes26mj9KIGtDo+g9xosFRSC+i1gQh2oAN/tQ62AI/pGZGQjVOiRg==",
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@@ -664,9 +675,9 @@
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-      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.12.0.tgz",
-      "integrity": "sha512-DYWGk01lDcxeS/K9IHPGWfT8PsJmbXRtRd2Sx72Tnb8pcYZQFF1oSDb8hJtS1vhp212q1Rzi5dUf9+nq0o9UIg==",
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.13.1.tgz",
+      "integrity": "sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==",
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@@ -1106,24 +1117,23 @@
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-      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-2.0.4.tgz",
-      "integrity": "sha512-z9n7yt9rOvIJrMhvDtDictKrkFHeihkNl6uWMmZlmL6tJtX9Cs+87oK+teBx+JIgzvbX3yZHT3eF8vpbDxHJXQ==",
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-2.1.5.tgz",
+      "integrity": "sha512-i0TprVWp+Kj4WRPtInjexJ8Q+BqTE909VpH8xVhXrJkoc5QC8VO9TryGOqTr+2hljzc1sC62t22h5tZePodM/A==",
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-        "async-each": "^1.0.0",
-        "braces": "^2.3.0",
-        "fsevents": "^1.2.2",
+        "async-each": "^1.0.1",
+        "braces": "^2.3.2",
+        "fsevents": "^1.2.7",
         "glob-parent": "^3.1.0",
-        "inherits": "^2.0.1",
+        "inherits": "^2.0.3",
         "is-binary-path": "^1.0.0",
         "is-glob": "^4.0.0",
-        "lodash.debounce": "^4.0.8",
-        "normalize-path": "^2.1.1",
+        "normalize-path": "^3.0.0",
         "path-is-absolute": "^1.0.0",
-        "readdirp": "^2.0.0",
-        "upath": "^1.0.5"
+        "readdirp": "^2.2.1",
+        "upath": "^1.1.1"
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@@ -2681,9 +2691,9 @@
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-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.4.tgz",
-      "integrity": "sha512-z8H8/diyk76B7q5wg+Ud0+CqzcAF3mBBI/bA5ne5zrRUUIvNkJY//D3BqyH571KuAC4Nr7Rw7CjWX4r0y9DvNg==",
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+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.7.tgz",
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@@ -2700,8 +2710,7 @@
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-          "dev": true,
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+          "dev": true
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@@ -2710,7 +2719,7 @@
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@@ -2722,21 +2731,19 @@
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-          "dev": true,
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+          "dev": true
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-          "version": "1.0.1",
+          "version": "1.1.1",
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@@ -2744,20 +2751,17 @@
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-          "dev": true,
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+          "dev": true
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-          "dev": true,
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+          "dev": true
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@@ -2775,7 +2779,7 @@
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-          "version": "0.5.1",
+          "version": "0.6.0",
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@@ -2824,7 +2828,7 @@
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-          "version": "7.1.2",
+          "version": "7.1.3",
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@@ -2844,12 +2848,12 @@
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-          "version": "0.4.21",
+          "version": "0.4.24",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "safer-buffer": "^2.1.0"
+            "safer-buffer": ">= 2.1.2 < 3"
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@@ -2874,8 +2878,7 @@
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           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
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@@ -2887,7 +2890,6 @@
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@@ -2902,7 +2904,6 @@
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@@ -2910,21 +2911,19 @@
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           "version": "0.0.8",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
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+          "version": "2.3.5",
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-          "optional": true,
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-            "safe-buffer": "^5.1.1",
+            "safe-buffer": "^5.1.2",
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-          "version": "1.1.0",
+          "version": "1.2.1",
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@@ -2936,7 +2935,6 @@
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@@ -2948,7 +2946,7 @@
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+          "version": "2.2.4",
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@@ -2959,18 +2957,18 @@
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-          "version": "0.10.0",
+          "version": "0.10.3",
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           "requires": {
             "detect-libc": "^1.0.2",
             "mkdirp": "^0.5.1",
-            "needle": "^2.2.0",
+            "needle": "^2.2.1",
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             "npmlog": "^4.0.2",
-            "rc": "^1.1.7",
+            "rc": "^1.2.7",
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             "semver": "^5.3.0",
             "tar": "^4"
@@ -2987,13 +2985,13 @@
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-          "version": "1.0.3",
+          "version": "1.0.5",
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           "optional": true
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-          "version": "1.1.10",
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@@ -3017,8 +3015,7 @@
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-          "dev": true,
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@@ -3030,7 +3027,6 @@
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@@ -3070,12 +3066,12 @@
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-          "version": "1.2.7",
+          "version": "1.2.8",
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           "dev": true,
           "optional": true,
           "requires": {
-            "deep-extend": "^0.5.1",
+            "deep-extend": "^0.6.0",
             "ini": "~1.3.0",
             "minimist": "^1.2.0",
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@@ -3105,19 +3101,18 @@
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-          "version": "2.6.2",
+          "version": "2.6.3",
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           "dev": true,
           "optional": true,
           "requires": {
-            "glob": "^7.0.5"
+            "glob": "^7.1.3"
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-          "version": "5.1.1",
+          "version": "5.1.2",
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@@ -3132,7 +3127,7 @@
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@@ -3153,7 +3148,6 @@
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@@ -3173,7 +3167,6 @@
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@@ -3185,17 +3178,17 @@
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+          "version": "4.4.8",
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-            "chownr": "^1.0.1",
+            "chownr": "^1.1.1",
             "fs-minipass": "^1.2.5",
-            "minipass": "^2.2.4",
-            "minizlib": "^1.1.0",
+            "minipass": "^2.3.4",
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@@ -3206,25 +3199,23 @@
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           "version": "1.0.2",
           "bundled": true,
-          "dev": true,
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@@ -3290,7 +3281,7 @@
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-          "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",
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@@ -3431,7 +3422,7 @@
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+      "resolved": "https://registry.npmjs.org/got/-/got-6.7.1.tgz",
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@@ -4486,12 +4477,6 @@
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+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.5.tgz",
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-        "yallist": "^3.0.2"
+        "yallist": "^2.1.2"
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@@ -4953,21 +4938,21 @@
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+      "version": "1.18.11",
+      "resolved": "https://registry.npmjs.org/nodemon/-/nodemon-1.18.11.tgz",
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       "dev": true,
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-        "chokidar": "^2.0.4",
+        "chokidar": "^2.1.5",
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         "minimatch": "^3.0.4",
-        "pstree.remy": "^1.1.2",
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@@ -5009,13 +4994,10 @@
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-      "dev": true,
-      "requires": {
-        "remove-trailing-separator": "^1.0.1"
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+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
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@@ -5556,9 +5538,9 @@
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@@ -5763,9 +5745,9 @@
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+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/registry-auth-token/-/registry-auth-token-3.4.0.tgz",
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       "dev": true,
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@@ -7115,9 +7097,9 @@
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+      "resolved": "https://registry.npmjs.org/upath/-/upath-1.1.2.tgz",
+      "integrity": "sha512-kXpym8nmDmlCBr7nKdIx8P2jNBa+pBpIUFRnKJ4dr8htyYGJFokkr2ZvERRtUN+9SY+JqXouNgUPtv6JQva/2Q==",
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     "update-notifier": {
@@ -7576,31 +7558,13 @@
       "requires": {
         "underscore": "1.8.3",
         "web3-core-helpers": "1.0.0-beta.36",
-        "websocket": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible"
+        "websocket": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2"
       },
       "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
           "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
-        },
-        "websocket": {
-          "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-          "from": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-          "requires": {
-            "debug": "^2.2.0",
-            "nan": "^2.3.3",
-            "typedarray-to-buffer": "^3.1.2",
-            "yaeti": "^0.0.6"
-          }
         }
       }
     },
@@ -7646,6 +7610,26 @@
         }
       }
     },
+    "websocket": {
+      "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+      "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
+      "requires": {
+        "debug": "^2.2.0",
+        "nan": "^2.3.3",
+        "typedarray-to-buffer": "^3.1.2",
+        "yaeti": "^0.0.6"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        }
+      }
+    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -7687,9 +7671,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "write-file-atomic": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.3.0.tgz",
-      "integrity": "sha512-xuPeK4OdjWqtfi59ylvVL0Yn35SF3zgcAcv7rBPFHVaEapaDr4GdGgm3j7ckTwH9wHL7fGmgfAnb0+THrHb8tA==",
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.2.tgz",
+      "integrity": "sha512-s0b6vB3xIVRLWywa6X9TOMA7k9zio0TMOsl9ZnDkliA/cfJlpHXAscj0gbHVJiTdIuAYpIyqS5GW91fqm6gG5g==",
       "dev": true,
       "requires": {
         "graceful-fs": "^4.1.11",
@@ -7780,9 +7764,9 @@
       "integrity": "sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc="
     },
     "yallist": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
-      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
       "dev": true
     },
     "yn": {
diff --git a/package.json b/package.json
index ec19248..18f1063 100644
--- a/package.json
+++ b/package.json
@@ -89,7 +89,7 @@
     "husky": "1.2.0",
     "lint-staged": "8.1.0",
     "mocha": "5.2.0",
-    "nodemon": "1.18.7",
+    "nodemon": "1.18.11",
     "prettier": "1.15.2",
     "rimraf": "2.6.2",
     "tslint": "5.11.0",