diff --git a/package-lock.json b/package-lock.json
index 2107ce8..621f151 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
       "integrity": "sha1-w8p0NJOGSMPg2cHjKN1otiLChMo=",
       "dev": true,
       "requires": {
-        "mime-types": "2.1.16",
+        "mime-types": "~2.1.11",
         "negotiator": "0.6.1"
       }
     },
@@ -38,7 +38,7 @@
       "integrity": "sha1-x1K9IQvvZ5UBtsbLf8hPj0cVjMQ=",
       "dev": true,
       "requires": {
-        "acorn": "4.0.13"
+        "acorn": "^4.0.3"
       },
       "dependencies": {
         "acorn": {
@@ -55,7 +55,7 @@
       "integrity": "sha1-DXceuMW44kQSSvGT0AbiG9fTCcY=",
       "dev": true,
       "requires": {
-        "acorn": "5.1.1"
+        "acorn": "^5.0.0"
       }
     },
     "ajv": {
@@ -64,10 +64,10 @@
       "integrity": "sha1-R8aNaehvXZUxA7AHSpQw3GPaXjk=",
       "dev": true,
       "requires": {
-        "co": "4.6.0",
-        "fast-deep-equal": "1.0.0",
-        "json-schema-traverse": "0.3.1",
-        "json-stable-stringify": "1.0.1"
+        "co": "^4.6.0",
+        "fast-deep-equal": "^1.0.0",
+        "json-schema-traverse": "^0.3.0",
+        "json-stable-stringify": "^1.0.1"
       }
     },
     "ajv-keywords": {
@@ -82,9 +82,9 @@
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
       "requires": {
-        "kind-of": "3.2.2",
-        "longest": "1.0.1",
-        "repeat-string": "1.6.1"
+        "kind-of": "^3.0.2",
+        "longest": "^1.0.1",
+        "repeat-string": "^1.5.2"
       }
     },
     "ansi-html": {
@@ -111,8 +111,8 @@
       "integrity": "sha1-VT3Lj5HjyImEXf26NMd3IbkLnXo=",
       "dev": true,
       "requires": {
-        "micromatch": "2.3.11",
-        "normalize-path": "2.1.1"
+        "micromatch": "^2.1.5",
+        "normalize-path": "^2.0.0"
       }
     },
     "arr-diff": {
@@ -121,7 +121,7 @@
       "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
       "dev": true,
       "requires": {
-        "arr-flatten": "1.1.0"
+        "arr-flatten": "^1.0.1"
       }
     },
     "arr-flatten": {
@@ -154,7 +154,7 @@
       "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
       "dev": true,
       "requires": {
-        "array-uniq": "1.0.3"
+        "array-uniq": "^1.0.1"
       }
     },
     "array-uniq": {
@@ -181,9 +181,9 @@
       "integrity": "sha1-SLokC0WpKA6UdImQull9IWYX/UA=",
       "dev": true,
       "requires": {
-        "bn.js": "4.11.7",
-        "inherits": "2.0.3",
-        "minimalistic-assert": "1.0.0"
+        "bn.js": "^4.0.0",
+        "inherits": "^2.0.1",
+        "minimalistic-assert": "^1.0.0"
       }
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     "assert": {
@@ -201,13 +201,19 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
+    "assertion-error": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
+      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
+      "dev": true
+    },
     "async": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/async/-/async-2.5.0.tgz",
       "integrity": "sha1-hDGQ/WtzV6C54clW7d3V7IRitU0=",
       "dev": true,
       "requires": {
-        "lodash": "4.17.4"
+        "lodash": "^4.14.0"
       }
     },
     "async-each": {
@@ -240,9 +246,9 @@
       "integrity": "sha1-AnYgvuVnqIwyVhV05/0IAdMxGOQ=",
       "dev": true,
       "requires": {
-        "chalk": "1.1.3",
-        "esutils": "2.0.2",
-        "js-tokens": "3.0.2"
+        "chalk": "^1.1.0",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.0"
       }
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@@ -251,25 +257,25 @@
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       "dev": true,
       "requires": {
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-        "babel-generator": "6.25.0",
-        "babel-helpers": "6.24.1",
-        "babel-messages": "6.23.0",
-        "babel-register": "6.24.1",
-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0",
-        "babylon": "6.17.4",
-        "convert-source-map": "1.5.0",
-        "debug": "2.6.8",
-        "json5": "0.5.1",
-        "lodash": "4.17.4",
-        "minimatch": "3.0.4",
-        "path-is-absolute": "1.0.1",
-        "private": "0.1.7",
-        "slash": "1.0.0",
-        "source-map": "0.5.6"
+        "babel-code-frame": "^6.22.0",
+        "babel-generator": "^6.25.0",
+        "babel-helpers": "^6.24.1",
+        "babel-messages": "^6.23.0",
+        "babel-register": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.25.0",
+        "babel-traverse": "^6.25.0",
+        "babel-types": "^6.25.0",
+        "babylon": "^6.17.2",
+        "convert-source-map": "^1.1.0",
+        "debug": "^2.1.1",
+        "json5": "^0.5.0",
+        "lodash": "^4.2.0",
+        "minimatch": "^3.0.2",
+        "path-is-absolute": "^1.0.0",
+        "private": "^0.1.6",
+        "slash": "^1.0.0",
+        "source-map": "^0.5.0"
       }
     },
     "babel-generator": {
@@ -278,14 +284,14 @@
       "integrity": "sha1-M6GvcNXyiQrrRlpKd5PB32qeqfw=",
       "dev": true,
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-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0",
-        "detect-indent": "4.0.0",
-        "jsesc": "1.3.0",
-        "lodash": "4.17.4",
-        "source-map": "0.5.6",
-        "trim-right": "1.0.1"
+        "babel-messages": "^6.23.0",
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.25.0",
+        "detect-indent": "^4.0.0",
+        "jsesc": "^1.3.0",
+        "lodash": "^4.2.0",
+        "source-map": "^0.5.0",
+        "trim-right": "^1.0.1"
       }
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     "babel-helper-bindify-decorators": {
@@ -294,9 +300,9 @@
       "integrity": "sha1-FMGeXxQte0fxmlJDHlKxzLxAozA=",
       "dev": true,
       "requires": {
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-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
       }
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     "babel-helper-builder-binary-assignment-operator-visitor": {
@@ -305,9 +311,9 @@
       "integrity": "sha1-zORReto1b0IgvK6KAsKzRvmlZmQ=",
       "dev": true,
       "requires": {
-        "babel-helper-explode-assignable-expression": "6.24.1",
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-helper-explode-assignable-expression": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
       }
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     "babel-helper-call-delegate": {
@@ -316,10 +322,10 @@
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       "dev": true,
       "requires": {
-        "babel-helper-hoist-variables": "6.24.1",
-        "babel-runtime": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-helper-hoist-variables": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
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     "babel-helper-define-map": {
@@ -328,10 +334,10 @@
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       "dev": true,
       "requires": {
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-        "babel-runtime": "6.26.0",
-        "babel-types": "6.26.0",
-        "lodash": "4.17.4"
+        "babel-helper-function-name": "^6.24.1",
+        "babel-runtime": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "lodash": "^4.17.4"
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@@ -340,8 +346,8 @@
           "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
           "dev": true,
           "requires": {
-            "core-js": "2.5.0",
-            "regenerator-runtime": "0.11.0"
+            "core-js": "^2.4.0",
+            "regenerator-runtime": "^0.11.0"
           }
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@@ -350,10 +356,10 @@
           "integrity": "sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=",
           "dev": true,
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-            "esutils": "2.0.2",
-            "lodash": "4.17.4",
-            "to-fast-properties": "1.0.3"
+            "babel-runtime": "^6.26.0",
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.4",
+            "to-fast-properties": "^1.0.3"
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@@ -370,9 +376,9 @@
       "integrity": "sha1-8luCz33BBDPFX3BZLVdGQArCLKo=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
       }
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     "babel-helper-explode-class": {
@@ -381,10 +387,10 @@
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       "dev": true,
       "requires": {
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-        "babel-runtime": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-helper-bindify-decorators": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
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     "babel-helper-function-name": {
@@ -393,11 +399,11 @@
       "integrity": "sha1-00dbjAPtmCQqJbSDUasYOZ01gKk=",
       "dev": true,
       "requires": {
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-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-helper-get-function-arity": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
       }
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     "babel-helper-get-function-arity": {
@@ -406,8 +412,8 @@
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       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
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     "babel-helper-hoist-variables": {
@@ -416,8 +422,8 @@
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       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
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     "babel-helper-optimise-call-expression": {
@@ -426,8 +432,8 @@
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       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
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     "babel-helper-regex": {
@@ -436,9 +442,9 @@
       "integrity": "sha1-MlxZ+QL4LyS3T6zu0DY5VPZJXnI=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.26.0",
-        "babel-types": "6.26.0",
-        "lodash": "4.17.4"
+        "babel-runtime": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "lodash": "^4.17.4"
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       "dependencies": {
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@@ -447,8 +453,8 @@
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           "dev": true,
           "requires": {
-            "core-js": "2.5.0",
-            "regenerator-runtime": "0.11.0"
+            "core-js": "^2.4.0",
+            "regenerator-runtime": "^0.11.0"
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         "babel-types": {
@@ -457,10 +463,10 @@
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           "dev": true,
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-            "esutils": "2.0.2",
-            "lodash": "4.17.4",
-            "to-fast-properties": "1.0.3"
+            "babel-runtime": "^6.26.0",
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.4",
+            "to-fast-properties": "^1.0.3"
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         "regenerator-runtime": {
@@ -477,11 +483,11 @@
       "integrity": "sha1-XsWBgnrXI/7N04HxySg5BnbkVRs=",
       "dev": true,
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-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-helper-function-name": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
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     "babel-helper-replace-supers": {
@@ -490,12 +496,12 @@
       "integrity": "sha1-v22/5Dk40XNpohPKiov3S2qQqxo=",
       "dev": true,
       "requires": {
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-        "babel-messages": "6.23.0",
-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-helper-optimise-call-expression": "^6.24.1",
+        "babel-messages": "^6.23.0",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
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@@ -504,8 +510,8 @@
       "integrity": "sha1-NHHenK7DiOXIUOWX5Yom3fN2ArI=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1"
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@@ -514,9 +520,9 @@
       "integrity": "sha1-uHE0yLEuPkwqlOBUYIW8aAorhIg=",
       "dev": true,
       "requires": {
-        "find-cache-dir": "1.0.0",
-        "loader-utils": "1.1.0",
-        "mkdirp": "0.5.1"
+        "find-cache-dir": "^1.0.0",
+        "loader-utils": "^1.0.2",
+        "mkdirp": "^0.5.1"
       }
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     "babel-messages": {
@@ -525,7 +531,7 @@
       "integrity": "sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0"
+        "babel-runtime": "^6.22.0"
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     "babel-plugin-check-es2015-constants": {
@@ -534,7 +540,7 @@
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       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0"
+        "babel-runtime": "^6.22.0"
       }
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     "babel-plugin-syntax-async-functions": {
@@ -615,9 +621,9 @@
       "integrity": "sha1-8FiQAUX9PpkHpt3yjaWfIVJYpds=",
       "dev": true,
       "requires": {
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-        "babel-plugin-syntax-async-generators": "6.13.0",
-        "babel-runtime": "6.25.0"
+        "babel-helper-remap-async-to-generator": "^6.24.1",
+        "babel-plugin-syntax-async-generators": "^6.5.0",
+        "babel-runtime": "^6.22.0"
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@@ -626,9 +632,9 @@
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       "dev": true,
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-        "babel-plugin-syntax-async-functions": "6.13.0",
-        "babel-runtime": "6.25.0"
+        "babel-helper-remap-async-to-generator": "^6.24.1",
+        "babel-plugin-syntax-async-functions": "^6.8.0",
+        "babel-runtime": "^6.22.0"
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@@ -637,9 +643,9 @@
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       "dev": true,
       "requires": {
-        "babel-plugin-syntax-class-constructor-call": "6.18.0",
-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0"
+        "babel-plugin-syntax-class-constructor-call": "^6.18.0",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1"
       }
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@@ -648,10 +654,10 @@
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       "dev": true,
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-        "babel-plugin-syntax-class-properties": "6.13.0",
-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0"
+        "babel-helper-function-name": "^6.24.1",
+        "babel-plugin-syntax-class-properties": "^6.8.0",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1"
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     "babel-plugin-transform-decorators": {
@@ -660,11 +666,11 @@
       "integrity": "sha1-eIAT2PjGtSIr33s0Q5Df13Vp4k0=",
       "dev": true,
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-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-helper-explode-class": "^6.24.1",
+        "babel-plugin-syntax-decorators": "^6.13.0",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-types": "^6.24.1"
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@@ -673,8 +679,8 @@
       "integrity": "sha1-KMyvkoEtlJws0SgfaQyP3EaK6bs=",
       "dev": true,
       "requires": {
-        "babel-plugin-syntax-do-expressions": "6.13.0",
-        "babel-runtime": "6.25.0"
+        "babel-plugin-syntax-do-expressions": "^6.8.0",
+        "babel-runtime": "^6.22.0"
       }
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     "babel-plugin-transform-es2015-arrow-functions": {
@@ -683,7 +689,7 @@
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       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0"
+        "babel-runtime": "^6.22.0"
       }
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     "babel-plugin-transform-es2015-block-scoped-functions": {
@@ -692,7 +698,7 @@
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-        "elliptic": "6.4.0"
+        "bn.js": "^4.1.0",
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@@ -1823,10 +1861,10 @@
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-        "inherits": "2.0.3",
-        "ripemd160": "2.0.1",
-        "sha.js": "2.4.8"
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@@ -1835,12 +1873,12 @@
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-        "safe-buffer": "5.1.1",
-        "sha.js": "2.4.8"
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+        "ripemd160": "^2.0.0",
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-        "shebang-command": "1.2.0",
-        "which": "1.3.0"
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@@ -1869,7 +1907,7 @@
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@@ -1880,16 +1918,16 @@
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-        "randombytes": "2.0.5"
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+        "browserify-sign": "^4.0.0",
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       "requires": {
-        "boolbase": "1.0.0",
-        "css-what": "2.1.0",
+        "boolbase": "~1.0.0",
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@@ -1922,7 +1960,7 @@
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       "dev": true,
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@@ -1931,7 +1969,7 @@
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@@ -1940,7 +1978,7 @@
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       "dev": true,
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-        "es5-ext": "0.10.26"
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@@ -1949,7 +1987,7 @@
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       "dev": true,
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@@ -1973,6 +2011,15 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
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+      "dev": true,
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-        "pify": "3.0.0",
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       "dev": true,
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@@ -2050,15 +2097,21 @@
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       "dev": true
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-        "miller-rabin": "4.0.0",
-        "randombytes": "2.0.5"
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+        "ip": "^1.1.0",
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       "dev": true,
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       "dev": true,
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-        "entities": "1.1.1"
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       "dev": true,
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       "dev": true,
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@@ -2171,7 +2224,7 @@
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-        "inherits": "2.0.3",
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+        "brorand": "^1.0.1",
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-        "object-assign": "4.1.1",
-        "tapable": "0.2.8"
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+        "memory-fs": "^0.4.0",
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       "dev": true,
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       "dev": true,
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-        "es6-symbol": "3.1.1",
-        "event-emitter": "0.3.5"
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-        "d": "1.0.0",
-        "es5-ext": "0.10.26"
+        "d": "1",
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@@ -2307,10 +2360,10 @@
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-        "es6-iterator": "2.0.1",
-        "es6-symbol": "3.1.1"
+        "d": "1",
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@@ -2331,11 +2384,11 @@
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-        "esutils": "2.0.2",
-        "optionator": "0.8.2",
-        "source-map": "0.5.6"
+        "esprima": "^3.1.3",
+        "estraverse": "^4.2.0",
+        "esutils": "^2.0.2",
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-        "es6-weak-map": "2.0.2",
-        "esrecurse": "4.2.0",
-        "estraverse": "4.2.0"
+        "es6-map": "^0.1.3",
+        "es6-weak-map": "^2.0.1",
+        "esrecurse": "^4.1.0",
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       "dev": true,
       "requires": {
-        "estraverse": "4.2.0",
-        "object-assign": "4.1.1"
+        "estraverse": "^4.1.0",
+        "object-assign": "^4.0.1"
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@@ -2392,8 +2445,8 @@
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-        "d": "1.0.0",
-        "es5-ext": "0.10.26"
+        "d": "1",
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@@ -2414,7 +2467,7 @@
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       "dev": true,
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-        "original": "1.0.0"
+        "original": ">=0.0.5"
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@@ -2423,7 +2476,7 @@
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       "dev": true,
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+        "create-hash": "^1.1.1"
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@@ -2432,13 +2485,13 @@
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-        "signal-exit": "3.0.2",
-        "strip-eof": "1.0.0"
+        "cross-spawn": "^5.0.1",
+        "get-stream": "^3.0.0",
+        "is-stream": "^1.1.0",
+        "npm-run-path": "^2.0.0",
+        "p-finally": "^1.0.0",
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@@ -2447,7 +2500,7 @@
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       "dev": true,
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+        "is-posix-bracket": "^0.1.0"
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@@ -2456,7 +2509,7 @@
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       "dev": true,
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+        "fill-range": "^2.1.0"
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@@ -2465,34 +2518,34 @@
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       "dev": true,
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-        "content-type": "1.0.2",
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-        "encodeurl": "1.0.1",
-        "escape-html": "1.0.3",
-        "etag": "1.8.0",
-        "finalhandler": "1.0.4",
+        "depd": "~1.1.1",
+        "encodeurl": "~1.0.1",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.0",
+        "finalhandler": "~1.0.4",
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-        "on-finished": "2.3.0",
-        "parseurl": "1.3.1",
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-        "lodash": "4.17.4",
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@@ -4782,7 +4887,7 @@
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@@ -4836,6 +4941,51 @@
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@@ -4877,7 +5027,7 @@
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@@ -4892,7 +5042,7 @@
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-        "domain-browser": "1.1.7",
-        "events": "1.1.1",
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+        "console-browserify": "^1.1.0",
+        "constants-browserify": "^1.0.0",
+        "crypto-browserify": "^3.11.0",
+        "domain-browser": "^1.1.1",
+        "events": "^1.0.0",
         "https-browserify": "0.0.1",
-        "os-browserify": "0.2.1",
+        "os-browserify": "^0.2.0",
         "path-browserify": "0.0.0",
-        "process": "0.11.10",
-        "punycode": "1.4.1",
-        "querystring-es3": "0.2.1",
-        "readable-stream": "2.3.3",
-        "stream-browserify": "2.0.1",
-        "stream-http": "2.7.2",
-        "string_decoder": "0.10.31",
-        "timers-browserify": "2.0.3",
+        "process": "^0.11.0",
+        "punycode": "^1.2.4",
+        "querystring-es3": "^0.2.0",
+        "readable-stream": "^2.0.5",
+        "stream-browserify": "^2.0.1",
+        "stream-http": "^2.3.1",
+        "string_decoder": "^0.10.25",
+        "timers-browserify": "^2.0.2",
         "tty-browserify": "0.0.0",
-        "url": "0.11.0",
-        "util": "0.10.3",
+        "url": "^0.11.0",
+        "util": "^0.10.3",
         "vm-browserify": "0.0.4"
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@@ -4946,10 +5096,10 @@
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       "dev": true,
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-        "hosted-git-info": "2.5.0",
-        "is-builtin-module": "1.0.0",
-        "semver": "5.4.1",
-        "validate-npm-package-license": "3.0.1"
+        "hosted-git-info": "^2.1.4",
+        "is-builtin-module": "^1.0.0",
+        "semver": "2 || 3 || 4 || 5",
+        "validate-npm-package-license": "^3.0.1"
       }
     },
     "normalize-path": {
@@ -4958,7 +5108,7 @@
       "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
       "dev": true,
       "requires": {
-        "remove-trailing-separator": "1.0.2"
+        "remove-trailing-separator": "^1.0.1"
       }
     },
     "npm-run-path": {
@@ -4967,7 +5117,7 @@
       "integrity": "sha1-NakjLfo11wZ7TLLd8jV7GHFTbF8=",
       "dev": true,
       "requires": {
-        "path-key": "2.0.1"
+        "path-key": "^2.0.0"
       }
     },
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@@ -4976,7 +5126,7 @@
       "integrity": "sha1-mSms32KPwsQQmN6rgqxYDPFJquQ=",
       "dev": true,
       "requires": {
-        "boolbase": "1.0.0"
+        "boolbase": "~1.0.0"
       }
     },
     "number-is-nan": {
@@ -5009,8 +5159,8 @@
       "integrity": "sha1-Gpx0SCnznbuFjHbKNXmuKlTr0fo=",
       "dev": true,
       "requires": {
-        "for-own": "0.1.5",
-        "is-extendable": "0.1.1"
+        "for-own": "^0.1.4",
+        "is-extendable": "^0.1.1"
       }
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@@ -5040,7 +5190,7 @@
       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
       "dev": true,
       "requires": {
-        "wrappy": "1.0.2"
+        "wrappy": "1"
       }
     },
     "opn": {
@@ -5049,8 +5199,8 @@
       "integrity": "sha1-erwi5kTf9jsKltWrfyeQwPAavJU=",
       "dev": true,
       "requires": {
-        "object-assign": "4.1.1",
-        "pinkie-promise": "2.0.1"
+        "object-assign": "^4.0.1",
+        "pinkie-promise": "^2.0.0"
       }
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     "optionator": {
@@ -5059,12 +5209,12 @@
       "integrity": "sha1-NkxeQJ0/TWMB1sC0wFu6UBgK62Q=",
       "dev": true,
       "requires": {
-        "deep-is": "0.1.3",
-        "fast-levenshtein": "2.0.6",
-        "levn": "0.3.0",
-        "prelude-ls": "1.1.2",
-        "type-check": "0.3.2",
-        "wordwrap": "1.0.0"
+        "deep-is": "~0.1.3",
+        "fast-levenshtein": "~2.0.4",
+        "levn": "~0.3.0",
+        "prelude-ls": "~1.1.2",
+        "type-check": "~0.3.2",
+        "wordwrap": "~1.0.0"
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@@ -5081,7 +5231,7 @@
       "integrity": "sha1-kUf5P6FpbQS+YeAb1QuurKZWvTs=",
       "dev": true,
       "requires": {
-        "url-parse": "1.0.5"
+        "url-parse": "1.0.x"
       },
       "dependencies": {
         "url-parse": {
@@ -5090,8 +5240,8 @@
           "integrity": "sha1-CFSGBCKv3P7+tsllxmLUgAFpkns=",
           "dev": true,
           "requires": {
-            "querystringify": "0.0.4",
-            "requires-port": "1.0.0"
+            "querystringify": "0.0.x",
+            "requires-port": "1.0.x"
           }
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@@ -5114,9 +5264,9 @@
       "integrity": "sha1-QrwpAKa1uL0XN2yOiCtlr8zyS/I=",
       "dev": true,
       "requires": {
-        "execa": "0.7.0",
-        "lcid": "1.0.0",
-        "mem": "1.1.0"
+        "execa": "^0.7.0",
+        "lcid": "^1.0.0",
+        "mem": "^1.1.0"
       }
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     "os-tmpdir": {
@@ -5143,7 +5293,7 @@
       "integrity": "sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=",
       "dev": true,
       "requires": {
-        "p-limit": "1.1.0"
+        "p-limit": "^1.1.0"
       }
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@@ -5164,7 +5314,7 @@
       "integrity": "sha1-35T9jPZTHs915r75oIWPvHK+Ikc=",
       "dev": true,
       "requires": {
-        "no-case": "2.3.2"
+        "no-case": "^2.2.0"
       }
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@@ -5173,11 +5323,11 @@
       "integrity": "sha1-N8T5t+06tlx0gXtfJICTf7+XxxI=",
       "dev": true,
       "requires": {
-        "asn1.js": "4.9.1",
-        "browserify-aes": "1.0.6",
-        "create-hash": "1.1.3",
-        "evp_bytestokey": "1.0.0",
-        "pbkdf2": "3.0.13"
+        "asn1.js": "^4.0.0",
+        "browserify-aes": "^1.0.0",
+        "create-hash": "^1.1.0",
+        "evp_bytestokey": "^1.0.0",
+        "pbkdf2": "^3.0.3"
       }
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     "parse-glob": {
@@ -5186,10 +5336,10 @@
       "integrity": "sha1-ssN2z7EfNVE7rdFz7wu246OIORw=",
       "dev": true,
       "requires": {
-        "glob-base": "0.3.0",
-        "is-dotfile": "1.0.3",
-        "is-extglob": "1.0.0",
-        "is-glob": "2.0.1"
+        "glob-base": "^0.3.0",
+        "is-dotfile": "^1.0.0",
+        "is-extglob": "^1.0.0",
+        "is-glob": "^2.0.0"
       }
     },
     "parse-json": {
@@ -5198,7 +5348,7 @@
       "integrity": "sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=",
       "dev": true,
       "requires": {
-        "error-ex": "1.3.1"
+        "error-ex": "^1.2.0"
       }
     },
     "parse5": {
@@ -5207,7 +5357,7 @@
       "integrity": "sha1-Be/1fw70V3+xRKefi5qWemzERRA=",
       "dev": true,
       "requires": {
-        "@types/node": "6.0.90"
+        "@types/node": "^6.0.46"
       }
     },
     "parseurl": {
@@ -5258,20 +5408,26 @@
       "integrity": "sha1-8BLMuEFbcJb8LaoQVMPXI4lZTHM=",
       "dev": true,
       "requires": {
-        "pify": "2.3.0"
+        "pify": "^2.0.0"
       }
     },
+    "pathval": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
+      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
+      "dev": true
+    },
     "pbkdf2": {
       "version": "3.0.13",
       "resolved": "https://registry.npmjs.org/pbkdf2/-/pbkdf2-3.0.13.tgz",
       "integrity": "sha1-w30pVTHnhrHaPj6tyEBCasywriU=",
       "dev": true,
       "requires": {
-        "create-hash": "1.1.3",
-        "create-hmac": "1.1.6",
-        "ripemd160": "2.0.1",
-        "safe-buffer": "5.1.1",
-        "sha.js": "2.4.8"
+        "create-hash": "^1.1.2",
+        "create-hmac": "^1.1.4",
+        "ripemd160": "^2.0.1",
+        "safe-buffer": "^5.0.1",
+        "sha.js": "^2.4.8"
       }
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     "performance-now": {
@@ -5298,7 +5454,7 @@
       "integrity": "sha1-ITXW36ejWMBprJsXh3YogihFD/o=",
       "dev": true,
       "requires": {
-        "pinkie": "2.0.4"
+        "pinkie": "^2.0.0"
       }
     },
     "pkg-dir": {
@@ -5307,7 +5463,7 @@
       "integrity": "sha1-9tXREJ4Z1j7fQo4L1X4Sd3YVM0s=",
       "dev": true,
       "requires": {
-        "find-up": "2.1.0"
+        "find-up": "^2.1.0"
       }
     },
     "pn": {
@@ -5322,9 +5478,9 @@
       "integrity": "sha1-uzLs2HwnEErm7kS1o8y/Drsa7ek=",
       "dev": true,
       "requires": {
-        "async": "1.5.2",
-        "debug": "2.6.8",
-        "mkdirp": "0.5.1"
+        "async": "^1.5.2",
+        "debug": "^2.2.0",
+        "mkdirp": "0.5.x"
       },
       "dependencies": {
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@@ -5353,8 +5509,8 @@
       "integrity": "sha1-X0+HyPkeWuPzuoerTPXgOxoX8aM=",
       "dev": true,
       "requires": {
-        "renderkid": "2.0.1",
-        "utila": "0.4.0"
+        "renderkid": "^2.0.1",
+        "utila": "~0.4"
       }
     },
     "private": {
@@ -5381,7 +5537,7 @@
       "integrity": "sha1-ccDuOxAt4/IC87ZPYI0XP8uhqRg=",
       "dev": true,
       "requires": {
-        "forwarded": "0.1.0",
+        "forwarded": "~0.1.0",
         "ipaddr.js": "1.4.0"
       }
     },
@@ -5403,11 +5559,11 @@
       "integrity": "sha1-OfaZ86RlYN1eusvKaTyvfGXBjMY=",
       "dev": true,
       "requires": {
-        "bn.js": "4.11.7",
-        "browserify-rsa": "4.0.1",
-        "create-hash": "1.1.3",
-        "parse-asn1": "5.1.0",
-        "randombytes": "2.0.5"
+        "bn.js": "^4.1.0",
+        "browserify-rsa": "^4.0.0",
+        "create-hash": "^1.1.0",
+        "parse-asn1": "^5.0.0",
+        "randombytes": "^2.0.1"
       }
     },
     "punycode": {
@@ -5446,8 +5602,8 @@
       "integrity": "sha1-x6vpzIuHwLqodrGf3oP9RkeX44w=",
       "dev": true,
       "requires": {
-        "is-number": "3.0.0",
-        "kind-of": "4.0.0"
+        "is-number": "^3.0.0",
+        "kind-of": "^4.0.0"
       },
       "dependencies": {
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@@ -5456,7 +5612,7 @@
           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           },
           "dependencies": {
             "kind-of": {
@@ -5465,7 +5621,7 @@
               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
               "dev": true,
               "requires": {
-                "is-buffer": "1.1.5"
+                "is-buffer": "^1.1.5"
               }
             }
           }
@@ -5476,7 +5632,7 @@
           "integrity": "sha1-IIE989cSkosgc3hpGkUGb65y3Vc=",
           "dev": true,
           "requires": {
-            "is-buffer": "1.1.5"
+            "is-buffer": "^1.1.5"
           }
         }
       }
@@ -5487,7 +5643,7 @@
       "integrity": "sha1-3ACaJGuNCaF3tLegrne8Vw9LG3k=",
       "dev": true,
       "requires": {
-        "safe-buffer": "5.1.1"
+        "safe-buffer": "^5.1.0"
       }
     },
     "range-parser": {
@@ -5502,9 +5658,9 @@
       "integrity": "sha1-jvHAYjxqbbDcZxPEv6xGMysjaPg=",
       "dev": true,
       "requires": {
-        "load-json-file": "2.0.0",
-        "normalize-package-data": "2.4.0",
-        "path-type": "2.0.0"
+        "load-json-file": "^2.0.0",
+        "normalize-package-data": "^2.3.2",
+        "path-type": "^2.0.0"
       }
     },
     "read-pkg-up": {
@@ -5513,8 +5669,8 @@
       "integrity": "sha1-a3KoBImE4MQeeVEP1en6mbO1Sb4=",
       "dev": true,
       "requires": {
-        "find-up": "2.1.0",
-        "read-pkg": "2.0.0"
+        "find-up": "^2.0.0",
+        "read-pkg": "^2.0.0"
       }
     },
     "readable-stream": {
@@ -5523,13 +5679,13 @@
       "integrity": "sha1-No8lEtefnUb9/HE0mueHi7weuVw=",
       "dev": true,
       "requires": {
-        "core-util-is": "1.0.2",
-        "inherits": "2.0.3",
-        "isarray": "1.0.0",
-        "process-nextick-args": "1.0.7",
-        "safe-buffer": "5.1.1",
-        "string_decoder": "1.0.3",
-        "util-deprecate": "1.0.2"
+        "core-util-is": "~1.0.0",
+        "inherits": "~2.0.3",
+        "isarray": "~1.0.0",
+        "process-nextick-args": "~1.0.6",
+        "safe-buffer": "~5.1.1",
+        "string_decoder": "~1.0.3",
+        "util-deprecate": "~1.0.1"
       }
     },
     "readdirp": {
@@ -5538,10 +5694,10 @@
       "integrity": "sha1-TtCtBg3zBzMAxIRANz9y0cxkLXg=",
       "dev": true,
       "requires": {
-        "graceful-fs": "4.1.11",
-        "minimatch": "3.0.4",
-        "readable-stream": "2.3.3",
-        "set-immediate-shim": "1.0.1"
+        "graceful-fs": "^4.1.2",
+        "minimatch": "^3.0.2",
+        "readable-stream": "^2.0.2",
+        "set-immediate-shim": "^1.0.1"
       }
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     "redent": {
@@ -5550,8 +5706,8 @@
       "integrity": "sha1-z5Fqsf1fHxbfsggi3W7H9zDCr94=",
       "dev": true,
       "requires": {
-        "indent-string": "2.1.0",
-        "strip-indent": "1.0.1"
+        "indent-string": "^2.1.0",
+        "strip-indent": "^1.0.1"
       }
     },
     "regenerate": {
@@ -5572,9 +5728,9 @@
       "integrity": "sha1-HkmWg3Ix2ot/PPQRTXG1aRoGgN0=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0",
-        "private": "0.1.7"
+        "babel-runtime": "^6.18.0",
+        "babel-types": "^6.19.0",
+        "private": "^0.1.6"
       }
     },
     "regex-cache": {
@@ -5583,8 +5739,8 @@
       "integrity": "sha1-mxpsNdTQ3871cRrmUejp09cRQUU=",
       "dev": true,
       "requires": {
-        "is-equal-shallow": "0.1.3",
-        "is-primitive": "2.0.0"
+        "is-equal-shallow": "^0.1.3",
+        "is-primitive": "^2.0.0"
       }
     },
     "regexpu-core": {
@@ -5593,9 +5749,9 @@
       "integrity": "sha1-SdA4g3uNz4v6W5pCE5k45uoq4kA=",
       "dev": true,
       "requires": {
-        "regenerate": "1.3.2",
-        "regjsgen": "0.2.0",
-        "regjsparser": "0.1.5"
+        "regenerate": "^1.2.1",
+        "regjsgen": "^0.2.0",
+        "regjsparser": "^0.1.4"
       }
     },
     "regjsgen": {
@@ -5610,7 +5766,7 @@
       "integrity": "sha1-fuj4Tcb6eS0/0K4ijSS9lJ6tIFw=",
       "dev": true,
       "requires": {
-        "jsesc": "0.5.0"
+        "jsesc": "~0.5.0"
       },
       "dependencies": {
         "jsesc": {
@@ -5639,11 +5795,11 @@
       "integrity": "sha1-iYyr/Ivt5Le5ETWj/9Mj5YwNsxk=",
       "dev": true,
       "requires": {
-        "css-select": "1.2.0",
-        "dom-converter": "0.1.4",
-        "htmlparser2": "3.3.0",
-        "strip-ansi": "3.0.1",
-        "utila": "0.3.3"
+        "css-select": "^1.1.0",
+        "dom-converter": "~0.1",
+        "htmlparser2": "~3.3.0",
+        "strip-ansi": "^3.0.0",
+        "utila": "~0.3"
       },
       "dependencies": {
         "utila": {
@@ -5672,7 +5828,7 @@
       "integrity": "sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=",
       "dev": true,
       "requires": {
-        "is-finite": "1.0.2"
+        "is-finite": "^1.0.0"
       }
     },
     "request": {
@@ -5681,28 +5837,28 @@
       "integrity": "sha1-ygtl2gLtYpNYh4COb1EDgQNOM1Y=",
       "dev": true,
       "requires": {
-        "aws-sign2": "0.7.0",
-        "aws4": "1.6.0",
-        "caseless": "0.12.0",
-        "combined-stream": "1.0.5",
-        "extend": "3.0.1",
-        "forever-agent": "0.6.1",
-        "form-data": "2.3.1",
-        "har-validator": "5.0.3",
-        "hawk": "6.0.2",
-        "http-signature": "1.2.0",
-        "is-typedarray": "1.0.0",
-        "isstream": "0.1.2",
-        "json-stringify-safe": "5.0.1",
-        "mime-types": "2.1.17",
-        "oauth-sign": "0.8.2",
-        "performance-now": "2.1.0",
-        "qs": "6.5.1",
-        "safe-buffer": "5.1.1",
-        "stringstream": "0.0.5",
-        "tough-cookie": "2.3.3",
-        "tunnel-agent": "0.6.0",
-        "uuid": "3.1.0"
+        "aws-sign2": "~0.7.0",
+        "aws4": "^1.6.0",
+        "caseless": "~0.12.0",
+        "combined-stream": "~1.0.5",
+        "extend": "~3.0.1",
+        "forever-agent": "~0.6.1",
+        "form-data": "~2.3.1",
+        "har-validator": "~5.0.3",
+        "hawk": "~6.0.2",
+        "http-signature": "~1.2.0",
+        "is-typedarray": "~1.0.0",
+        "isstream": "~0.1.2",
+        "json-stringify-safe": "~5.0.1",
+        "mime-types": "~2.1.17",
+        "oauth-sign": "~0.8.2",
+        "performance-now": "^2.1.0",
+        "qs": "~6.5.1",
+        "safe-buffer": "^5.1.1",
+        "stringstream": "~0.0.5",
+        "tough-cookie": "~2.3.3",
+        "tunnel-agent": "^0.6.0",
+        "uuid": "^3.1.0"
       },
       "dependencies": {
         "mime-db": {
@@ -5717,7 +5873,7 @@
           "integrity": "sha1-Cdejk/A+mVp5+K+Fe3Cp4KsWVXo=",
           "dev": true,
           "requires": {
-            "mime-db": "1.30.0"
+            "mime-db": "~1.30.0"
           }
         },
         "qs": {
@@ -5740,7 +5896,7 @@
       "integrity": "sha1-Pu4AssWqgyOc+wTFcA2jb4HNCLY=",
       "dev": true,
       "requires": {
-        "lodash": "4.17.4"
+        "lodash": "^4.13.1"
       }
     },
     "request-promise-native": {
@@ -5750,8 +5906,8 @@
       "dev": true,
       "requires": {
         "request-promise-core": "1.1.1",
-        "stealthy-require": "1.1.1",
-        "tough-cookie": "2.3.3"
+        "stealthy-require": "^1.1.0",
+        "tough-cookie": ">=2.3.3"
       }
     },
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@@ -5778,7 +5934,7 @@
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+            "uglify-to-browserify": "~1.0.0",
+            "yargs": "~3.10.0"
           },
           "dependencies": {
             "yargs": {
@@ -6563,9 +6779,9 @@
               "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
               "dev": true,
               "requires": {
-                "camelcase": "1.2.1",
-                "cliui": "2.1.0",
-                "decamelize": "1.2.0",
+                "camelcase": "^1.0.2",
+                "cliui": "^2.1.0",
+                "decamelize": "^1.0.0",
                 "window-size": "0.1.0"
               }
             }
@@ -6577,9 +6793,9 @@
           "integrity": "sha1-uVH0q7a9YX5m9j64kUmOORdj4wk=",
           "dev": true,
           "requires": {
-            "source-map": "0.5.6",
-            "uglify-js": "2.8.29",
-            "webpack-sources": "1.0.1"
+            "source-map": "^0.5.6",
+            "uglify-js": "^2.8.29",
+            "webpack-sources": "^1.0.1"
           }
         }
       }
@@ -6590,11 +6806,11 @@
       "integrity": "sha1-007++y7dp+HTtdvgcolRMhllFwk=",
       "dev": true,
       "requires": {
-        "memory-fs": "0.4.1",
-        "mime": "1.3.4",
-        "path-is-absolute": "1.0.1",
-        "range-parser": "1.2.0",
-        "time-stamp": "2.0.0"
+        "memory-fs": "~0.4.1",
+        "mime": "^1.3.4",
+        "path-is-absolute": "^1.0.0",
+        "range-parser": "^1.0.3",
+        "time-stamp": "^2.0.0"
       }
     },
     "webpack-dev-server": {
@@ -6604,27 +6820,27 @@
       "dev": true,
       "requires": {
         "ansi-html": "0.0.7",
-        "bonjour": "3.5.0",
-        "chokidar": "1.7.0",
-        "compression": "1.7.0",
-        "connect-history-api-fallback": "1.3.0",
-        "del": "3.0.0",
-        "express": "4.15.4",
-        "html-entities": "1.2.1",
-        "http-proxy-middleware": "0.17.4",
-        "internal-ip": "1.2.0",
-        "loglevel": "1.4.1",
+        "bonjour": "^3.5.0",
+        "chokidar": "^1.6.0",
+        "compression": "^1.5.2",
+        "connect-history-api-fallback": "^1.3.0",
+        "del": "^3.0.0",
+        "express": "^4.13.3",
+        "html-entities": "^1.2.0",
+        "http-proxy-middleware": "~0.17.4",
+        "internal-ip": "^1.2.0",
+        "loglevel": "^1.4.1",
         "opn": "4.0.2",
-        "portfinder": "1.0.13",
-        "selfsigned": "1.9.1",
-        "serve-index": "1.9.0",
+        "portfinder": "^1.0.9",
+        "selfsigned": "^1.9.1",
+        "serve-index": "^1.7.2",
         "sockjs": "0.3.18",
         "sockjs-client": "1.1.4",
-        "spdy": "3.4.7",
-        "strip-ansi": "3.0.1",
-        "supports-color": "3.2.3",
-        "webpack-dev-middleware": "1.12.0",
-        "yargs": "6.6.0"
+        "spdy": "^3.4.1",
+        "strip-ansi": "^3.0.0",
+        "supports-color": "^3.1.1",
+        "webpack-dev-middleware": "^1.11.0",
+        "yargs": "^6.0.0"
       },
       "dependencies": {
         "camelcase": {
@@ -6639,9 +6855,9 @@
           "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
           "dev": true,
           "requires": {
-            "string-width": "1.0.2",
-            "strip-ansi": "3.0.1",
-            "wrap-ansi": "2.1.0"
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1",
+            "wrap-ansi": "^2.0.0"
           }
         },
         "find-up": {
@@ -6650,8 +6866,8 @@
           "integrity": "sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=",
           "dev": true,
           "requires": {
-            "path-exists": "2.1.0",
-            "pinkie-promise": "2.0.1"
+            "path-exists": "^2.0.0",
+            "pinkie-promise": "^2.0.0"
           }
         },
         "has-flag": {
@@ -6666,11 +6882,11 @@
           "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
           "dev": true,
           "requires": {
-            "graceful-fs": "4.1.11",
-            "parse-json": "2.2.0",
-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1",
-            "strip-bom": "2.0.0"
+            "graceful-fs": "^4.1.2",
+            "parse-json": "^2.2.0",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0",
+            "strip-bom": "^2.0.0"
           }
         },
         "os-locale": {
@@ -6679,7 +6895,7 @@
           "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
           "dev": true,
           "requires": {
-            "lcid": "1.0.0"
+            "lcid": "^1.0.0"
           }
         },
         "path-exists": {
@@ -6688,7 +6904,7 @@
           "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
           "dev": true,
           "requires": {
-            "pinkie-promise": "2.0.1"
+            "pinkie-promise": "^2.0.0"
           }
         },
         "path-type": {
@@ -6697,9 +6913,9 @@
           "integrity": "sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=",
           "dev": true,
           "requires": {
-            "graceful-fs": "4.1.11",
-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1"
+            "graceful-fs": "^4.1.2",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0"
           }
         },
         "read-pkg": {
@@ -6708,9 +6924,9 @@
           "integrity": "sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=",
           "dev": true,
           "requires": {
-            "load-json-file": "1.1.0",
-            "normalize-package-data": "2.4.0",
-            "path-type": "1.1.0"
+            "load-json-file": "^1.0.0",
+            "normalize-package-data": "^2.3.2",
+            "path-type": "^1.0.0"
           }
         },
         "read-pkg-up": {
@@ -6719,8 +6935,8 @@
           "integrity": "sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=",
           "dev": true,
           "requires": {
-            "find-up": "1.1.2",
-            "read-pkg": "1.1.0"
+            "find-up": "^1.0.0",
+            "read-pkg": "^1.0.0"
           }
         },
         "string-width": {
@@ -6729,9 +6945,9 @@
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
         },
         "strip-bom": {
@@ -6740,7 +6956,7 @@
           "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
           "dev": true,
           "requires": {
-            "is-utf8": "0.2.1"
+            "is-utf8": "^0.2.0"
           }
         },
         "supports-color": {
@@ -6749,7 +6965,7 @@
           "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
           "dev": true,
           "requires": {
-            "has-flag": "1.0.0"
+            "has-flag": "^1.0.0"
           }
         },
         "which-module": {
@@ -6764,19 +6980,19 @@
           "integrity": "sha1-eC7CHvQDNF+DCoCMo9UTr1YGUgg=",
           "dev": true,
           "requires": {
-            "camelcase": "3.0.0",
-            "cliui": "3.2.0",
-            "decamelize": "1.2.0",
-            "get-caller-file": "1.0.2",
-            "os-locale": "1.4.0",
-            "read-pkg-up": "1.0.1",
-            "require-directory": "2.1.1",
-            "require-main-filename": "1.0.1",
-            "set-blocking": "2.0.0",
-            "string-width": "1.0.2",
-            "which-module": "1.0.0",
-            "y18n": "3.2.1",
-            "yargs-parser": "4.2.1"
+            "camelcase": "^3.0.0",
+            "cliui": "^3.2.0",
+            "decamelize": "^1.1.1",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^1.4.0",
+            "read-pkg-up": "^1.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^1.0.2",
+            "which-module": "^1.0.0",
+            "y18n": "^3.2.1",
+            "yargs-parser": "^4.2.0"
           }
         },
         "yargs-parser": {
@@ -6785,7 +7001,7 @@
           "integrity": "sha1-KczqwNxPA8bIe0qfIX3RjJ90hxw=",
           "dev": true,
           "requires": {
-            "camelcase": "3.0.0"
+            "camelcase": "^3.0.0"
           }
         }
       }
@@ -6796,8 +7012,8 @@
       "integrity": "sha1-xzVkNqTRMSO+LiQmoF0drZy+Zc8=",
       "dev": true,
       "requires": {
-        "source-list-map": "2.0.0",
-        "source-map": "0.5.6"
+        "source-list-map": "^2.0.0",
+        "source-map": "~0.5.3"
       }
     },
     "webrtc-adapter": {
@@ -6806,8 +7022,8 @@
       "integrity": "sha1-+wt3p0KVK9Jv6dgmTIctcsLouYI=",
       "dev": true,
       "requires": {
-        "rtcpeerconnection-shim": "1.2.4",
-        "sdp": "2.5.0"
+        "rtcpeerconnection-shim": "^1.1.13",
+        "sdp": "^2.3.0"
       }
     },
     "websocket-driver": {
@@ -6816,7 +7032,7 @@
       "integrity": "sha1-XLJVbOuF9Dc8bYI4qmkchFThOjY=",
       "dev": true,
       "requires": {
-        "websocket-extensions": "0.1.1"
+        "websocket-extensions": ">=0.1.1"
       }
     },
     "websocket-extensions": {
@@ -6848,9 +7064,9 @@
       "integrity": "sha1-WX7lSINxq+eSLIQzl93sGulMBI0=",
       "dev": true,
       "requires": {
-        "lodash.sortby": "4.7.0",
-        "tr46": "1.0.1",
-        "webidl-conversions": "4.0.2"
+        "lodash.sortby": "^4.7.0",
+        "tr46": "^1.0.0",
+        "webidl-conversions": "^4.0.1"
       }
     },
     "which": {
@@ -6859,7 +7075,7 @@
       "integrity": "sha1-/wS9/AEO5UfXgL7DjhrBwnd9JTo=",
       "dev": true,
       "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
       }
     },
     "which-module": {
@@ -6886,8 +7102,8 @@
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
       "dev": true,
       "requires": {
-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1"
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
       },
       "dependencies": {
         "string-width": {
@@ -6896,9 +7112,9 @@
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
         }
       }
@@ -6945,19 +7161,19 @@
       "integrity": "sha1-YpmpBVsc78lp/355wdkY3Osiw2A=",
       "dev": true,
       "requires": {
-        "camelcase": "4.1.0",
-        "cliui": "3.2.0",
-        "decamelize": "1.2.0",
-        "get-caller-file": "1.0.2",
-        "os-locale": "2.1.0",
-        "read-pkg-up": "2.0.0",
-        "require-directory": "2.1.1",
-        "require-main-filename": "1.0.1",
-        "set-blocking": "2.0.0",
-        "string-width": "2.1.1",
-        "which-module": "2.0.0",
-        "y18n": "3.2.1",
-        "yargs-parser": "7.0.0"
+        "camelcase": "^4.1.0",
+        "cliui": "^3.2.0",
+        "decamelize": "^1.1.1",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^2.0.0",
+        "read-pkg-up": "^2.0.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^2.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^3.2.1",
+        "yargs-parser": "^7.0.0"
       },
       "dependencies": {
         "camelcase": {
@@ -6972,9 +7188,9 @@
           "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
           "dev": true,
           "requires": {
-            "string-width": "1.0.2",
-            "strip-ansi": "3.0.1",
-            "wrap-ansi": "2.1.0"
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1",
+            "wrap-ansi": "^2.0.0"
           },
           "dependencies": {
             "string-width": {
@@ -6983,9 +7199,9 @@
               "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
               "dev": true,
               "requires": {
-                "code-point-at": "1.1.0",
-                "is-fullwidth-code-point": "1.0.0",
-                "strip-ansi": "3.0.1"
+                "code-point-at": "^1.0.0",
+                "is-fullwidth-code-point": "^1.0.0",
+                "strip-ansi": "^3.0.0"
               }
             }
           }
@@ -6998,7 +7214,7 @@
       "integrity": "sha1-jQrELxbqVd69MyyvTEA4s+P139k=",
       "dev": true,
       "requires": {
-        "camelcase": "4.1.0"
+        "camelcase": "^4.1.0"
       },
       "dependencies": {
         "camelcase": {
diff --git a/package.json b/package.json
index 80d54d6..d3c5853 100644
--- a/package.json
+++ b/package.json
@@ -29,12 +29,15 @@
     "babel-preset-env": "^1.6.1",
     "babel-preset-stage-0": "^6.24.1",
     "babel-register": "^6.24.1",
+    "chai": "^4.2.0",
     "clean-webpack-plugin": "^0.1.16",
     "html-webpack-plugin": "^2.30.1",
     "jsdom": "11.3.0",
     "jsdom-global": "3.0.2",
+    "mocha": "^5.2.0",
     "mock-socket": "^7.0.0",
     "rimraf": "^2.6.2",
+    "should": "^13.2.3",
     "webpack": "^3.4.1",
     "webpack-dev-server": "^2.6.1",
     "webrtc-adapter": "6.0.4"