diff --git a/contracts/mocks/ERC721TokenMock.sol b/contracts/mocks/ERC721TokenMock.sol
index 4695ad296..5e07f9f5f 100644
--- a/contracts/mocks/ERC721TokenMock.sol
+++ b/contracts/mocks/ERC721TokenMock.sol
@@ -24,4 +24,8 @@ contract ERC721TokenMock is ERC721Token {
   function setTokenURI(uint256 _tokenId, string _uri) public {
     super._setTokenURI(_tokenId, _uri);
   }
+  
+  function _removeTokenFrom(address _from, uint256 _tokenId) public {
+    super.removeTokenFrom(_from, _tokenId);
+  }
 }
diff --git a/contracts/token/ERC721/ERC721Token.sol b/contracts/token/ERC721/ERC721Token.sol
index 0b28e0c45..1cc81d232 100644
--- a/contracts/token/ERC721/ERC721Token.sol
+++ b/contracts/token/ERC721/ERC721Token.sol
@@ -161,7 +161,7 @@ contract ERC721Token is SupportsInterfaceWithLookup, ERC721BasicToken, ERC721 {
     uint256 lastToken = ownedTokens[_from][lastTokenIndex];
 
     ownedTokens[_from][tokenIndex] = lastToken;
-    ownedTokens[_from][lastTokenIndex] = 0;
+
     // Note that this will handle single-element arrays. In that case, both tokenIndex and lastTokenIndex are going to
     // be zero. Then we can make sure that we will remove _tokenId from the ownedTokens list since we are first swapping
     // the lastToken to the first position, and then dropping the element placed in the last position of the list
diff --git a/package-lock.json b/package-lock.json
index 60adaa505..9252d4f10 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
       "integrity": "sha512-6RmGuGZSsvwIYS9otANM+Rie7/6UNdE0IbxwUiXFjXmjHNCJZEjyX2Pltl5BvIYszLODlsnXtyA7A7Ujlca4Gw==",
       "dev": true,
       "requires": {
-        "xtend": "4.0.1"
+        "xtend": "~4.0.0"
       }
     },
     "accepts": {
@@ -31,7 +31,7 @@
       "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
       "dev": true,
       "requires": {
-        "mime-types": "2.1.18",
+        "mime-types": "~2.1.18",
         "negotiator": "0.6.1"
       },
       "dependencies": {
@@ -47,7 +47,7 @@
           "integrity": "sha512-lc/aahn+t4/SWV/qcmumYjymLsWfN3ELhpmVuUFjgsORruuZPVSwAQryq+HHGvO/SI2KVX26bx+En+zhM8g8hQ==",
           "dev": true,
           "requires": {
-            "mime-db": "1.33.0"
+            "mime-db": "~1.33.0"
           }
         }
       }
@@ -58,7 +58,7 @@
       "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
       "dev": true,
       "requires": {
-        "acorn": "3.3.0"
+        "acorn": "^3.0.4"
       },
       "dependencies": {
         "acorn": {
@@ -81,10 +81,10 @@
       "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
       "dev": true,
       "requires": {
-        "co": "4.6.0",
-        "fast-deep-equal": "1.0.0",
-        "fast-json-stable-stringify": "2.0.0",
-        "json-schema-traverse": "0.3.1"
+        "co": "^4.6.0",
+        "fast-deep-equal": "^1.0.0",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.3.0"
       }
     },
     "ajv-keywords": {
@@ -99,9 +99,9 @@
       "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"
       }
     },
     "amdefine": {
@@ -140,8 +140,8 @@
       "integrity": "sha512-0XNayC8lTHQ2OI8aljNCN3sSx6hsr/1+rlcDAotXJR7C1oZZHCNsfpbKwMjRA3Uqb5tF1Rae2oloTr4xpq+WjA==",
       "dev": true,
       "requires": {
-        "micromatch": "2.3.11",
-        "normalize-path": "2.1.1"
+        "micromatch": "^2.1.5",
+        "normalize-path": "^2.0.0"
       }
     },
     "aproba": {
@@ -156,8 +156,8 @@
       "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
       "dev": true,
       "requires": {
-        "delegates": "1.0.0",
-        "readable-stream": "2.3.3"
+        "delegates": "^1.0.0",
+        "readable-stream": "^2.0.6"
       }
     },
     "argparse": {
@@ -166,7 +166,7 @@
       "integrity": "sha1-c9g7wmP4bpf4zE9rrhsOkKfSLIY=",
       "dev": true,
       "requires": {
-        "sprintf-js": "1.0.3"
+        "sprintf-js": "~1.0.2"
       }
     },
     "arr-diff": {
@@ -175,7 +175,7 @@
       "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
       "dev": true,
       "requires": {
-        "arr-flatten": "1.1.0"
+        "arr-flatten": "^1.0.1"
       }
     },
     "arr-flatten": {
@@ -202,7 +202,7 @@
       "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
       "dev": true,
       "requires": {
-        "array-uniq": "1.0.3"
+        "array-uniq": "^1.0.1"
       }
     },
     "array-uniq": {
@@ -265,7 +265,7 @@
       "integrity": "sha1-959IDf2mZFqXvWFCwBcVDWO05w4=",
       "dev": true,
       "requires": {
-        "async": "2.5.0"
+        "async": "^2.4.0"
       },
       "dependencies": {
         "async": {
@@ -274,7 +274,7 @@
           "integrity": "sha512-e+lJAJeNWuPCNyxZKOBdaJGyLGHugXVQtrAwtuAe2vhxTYxFTKE73p8JuTmdH0qdQZtDvI4dhJwjZc5zsfIsYw==",
           "dev": true,
           "requires": {
-            "lodash": "4.17.4"
+            "lodash": "^4.14.0"
           }
         }
       }
@@ -309,9 +309,9 @@
       "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"
       }
     },
     "babel-core": {
@@ -320,25 +320,25 @@
       "integrity": "sha1-fdQrBGPHQunVKW3rPsZ6kyLa1yk=",
       "dev": true,
       "requires": {
-        "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": "6.25.0",
-        "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": {
@@ -347,14 +347,14 @@
       "integrity": "sha1-M6GvcNXyiQrrRlpKd5PB32qeqfw=",
       "dev": true,
       "requires": {
-        "babel-messages": "6.23.0",
-        "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"
       },
       "dependencies": {
         "jsesc": {
@@ -371,9 +371,9 @@
       "integrity": "sha1-FMGeXxQte0fxmlJDHlKxzLxAozA=",
       "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"
       }
     },
     "babel-helper-builder-binary-assignment-operator-visitor": {
@@ -382,9 +382,9 @@
       "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"
       }
     },
     "babel-helper-call-delegate": {
@@ -393,10 +393,10 @@
       "integrity": "sha1-7Oaqzdx25Bw0YfiL/Fdb0Nqi340=",
       "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"
       }
     },
     "babel-helper-define-map": {
@@ -405,10 +405,10 @@
       "integrity": "sha1-epdH8ljYlH0y1RX2qhx70CIEoIA=",
       "dev": true,
       "requires": {
-        "babel-helper-function-name": "6.24.1",
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0",
-        "lodash": "4.17.4"
+        "babel-helper-function-name": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1",
+        "lodash": "^4.2.0"
       }
     },
     "babel-helper-explode-assignable-expression": {
@@ -417,9 +417,9 @@
       "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"
       }
     },
     "babel-helper-explode-class": {
@@ -428,10 +428,10 @@
       "integrity": "sha1-fcKjkQ3uAHBW4eMdZAztPVTqqes=",
       "dev": true,
       "requires": {
-        "babel-helper-bindify-decorators": "6.24.1",
-        "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"
       }
     },
     "babel-helper-function-name": {
@@ -440,11 +440,11 @@
       "integrity": "sha1-00dbjAPtmCQqJbSDUasYOZ01gKk=",
       "dev": true,
       "requires": {
-        "babel-helper-get-function-arity": "6.24.1",
-        "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"
       }
     },
     "babel-helper-get-function-arity": {
@@ -453,8 +453,8 @@
       "integrity": "sha1-j3eCqpNAfEHTqlCQj4mwMbG2hT0=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
       }
     },
     "babel-helper-hoist-variables": {
@@ -463,8 +463,8 @@
       "integrity": "sha1-HssnaJydJVE+rbyZFKc/VAi+enY=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
       }
     },
     "babel-helper-optimise-call-expression": {
@@ -473,8 +473,8 @@
       "integrity": "sha1-96E0J7qfc/j0+pk8VKl4gtEkQlc=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0"
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
       }
     },
     "babel-helper-regex": {
@@ -483,9 +483,9 @@
       "integrity": "sha1-024i+rEAjXnYhkjjIRaGgShFbOg=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-types": "6.25.0",
-        "lodash": "4.17.4"
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1",
+        "lodash": "^4.2.0"
       }
     },
     "babel-helper-remap-async-to-generator": {
@@ -494,11 +494,11 @@
       "integrity": "sha1-XsWBgnrXI/7N04HxySg5BnbkVRs=",
       "dev": true,
       "requires": {
-        "babel-helper-function-name": "6.24.1",
-        "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"
       }
     },
     "babel-helper-replace-supers": {
@@ -507,12 +507,12 @@
       "integrity": "sha1-v22/5Dk40XNpohPKiov3S2qQqxo=",
       "dev": true,
       "requires": {
-        "babel-helper-optimise-call-expression": "6.24.1",
-        "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"
       }
     },
     "babel-helpers": {
@@ -521,8 +521,8 @@
       "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"
       }
     },
     "babel-messages": {
@@ -531,7 +531,7 @@
       "integrity": "sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0"
+        "babel-runtime": "^6.22.0"
       }
     },
     "babel-plugin-check-es2015-constants": {
@@ -540,7 +540,7 @@
       "integrity": "sha1-NRV7EBQm/S/9PaP3XH0ekYNbv4o=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0"
+        "babel-runtime": "^6.22.0"
       }
     },
     "babel-plugin-syntax-async-functions": {
@@ -615,9 +615,9 @@
       "integrity": "sha1-8FiQAUX9PpkHpt3yjaWfIVJYpds=",
       "dev": true,
       "requires": {
-        "babel-helper-remap-async-to-generator": "6.24.1",
-        "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"
       }
     },
     "babel-plugin-transform-async-to-generator": {
@@ -626,9 +626,9 @@
       "integrity": "sha1-ZTbjeK/2yx1VF6wOQOs+n8jQh2E=",
       "dev": true,
       "requires": {
-        "babel-helper-remap-async-to-generator": "6.24.1",
-        "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"
       }
     },
     "babel-plugin-transform-class-constructor-call": {
@@ -637,9 +637,9 @@
       "integrity": "sha1-gNwoVQWsBn3LjWxl4vbxGrd2Xvk=",
       "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"
       }
     },
     "babel-plugin-transform-class-properties": {
@@ -648,10 +648,10 @@
       "integrity": "sha1-anl2PqYdM9NvN7YRqp3vgagbRqw=",
       "dev": true,
       "requires": {
-        "babel-helper-function-name": "6.24.1",
-        "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"
       }
     },
     "babel-plugin-transform-decorators": {
@@ -660,11 +660,11 @@
       "integrity": "sha1-eIAT2PjGtSIr33s0Q5Df13Vp4k0=",
       "dev": true,
       "requires": {
-        "babel-helper-explode-class": "6.24.1",
-        "babel-plugin-syntax-decorators": "6.13.0",
-        "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"
       }
     },
     "babel-plugin-transform-es2015-arrow-functions": {
@@ -673,7 +673,7 @@
       "integrity": "sha1-RSaSy3EdX3ncf4XkQM5BufJE0iE=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0"
+        "babel-runtime": "^6.22.0"
       }
     },
     "babel-plugin-transform-es2015-block-scoped-functions": {
@@ -682,7 +682,7 @@
       "integrity": "sha1-u8UbSflk1wy42OC5ToICRs46YUE=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0"
+        "babel-runtime": "^6.22.0"
       }
     },
     "babel-plugin-transform-es2015-block-scoping": {
@@ -691,11 +691,11 @@
       "integrity": "sha1-dsKV3DpHQbFmWt/TFnIV3P8ypXY=",
       "dev": true,
       "requires": {
-        "babel-runtime": "6.25.0",
-        "babel-template": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0",
-        "lodash": "4.17.4"
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1",
+        "lodash": "^4.2.0"
       }
     },
     "babel-plugin-transform-es2015-classes": {
@@ -704,15 +704,15 @@
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@@ -1142,7 +1142,7 @@
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@@ -1179,10 +1180,10 @@
       "integrity": "sha1-QOc/cGdMJn8UjNv4N08qUL4Waw0=",
       "dev": true,
       "requires": {
-        "create-hash": "1.1.3",
-        "pbkdf2": "3.0.13",
-        "randombytes": "2.0.5",
-        "unorm": "1.4.1"
+        "create-hash": "^1.1.0",
+        "pbkdf2": "^3.0.0",
+        "randombytes": "^2.0.1",
+        "unorm": "^1.3.3"
       }
     },
     "bip66": {
@@ -1191,7 +1192,7 @@
       "integrity": "sha1-AfqHSHhcpwlV1QESF9GzE5lpyiI=",
       "dev": true,
       "requires": {
-        "safe-buffer": "5.1.1"
+        "safe-buffer": "^5.0.1"
       }
     },
     "bl": {
@@ -1200,7 +1201,7 @@
       "integrity": "sha1-ysMo977kVzDUBLaSID/LWQ4XLV4=",
       "dev": true,
       "requires": {
-        "readable-stream": "2.3.3"
+        "readable-stream": "^2.0.5"
       }
     },
     "bn.js": {
@@ -1216,15 +1217,15 @@
       "dev": true,
       "requires": {
         "bytes": "3.0.0",
-        "content-type": "1.0.4",
+        "content-type": "~1.0.4",
         "debug": "2.6.9",
-        "depd": "1.1.2",
-        "http-errors": "1.6.3",
+        "depd": "~1.1.2",
+        "http-errors": "~1.6.3",
         "iconv-lite": "0.4.23",
-        "on-finished": "2.3.0",
+        "on-finished": "~2.3.0",
         "qs": "6.5.2",
         "raw-body": "2.3.3",
-        "type-is": "1.6.16"
+        "type-is": "~1.6.16"
       },
       "dependencies": {
         "debug": {
@@ -1242,7 +1243,7 @@
           "integrity": "sha512-neyTUVFtahjf0mB3dZT77u+8O0QB89jFdnBkd5P1JgYPbPaia3gXXOVL2fq8VyU2gMMD7SaN7QukTB/pmXYvDA==",
           "dev": true,
           "requires": {
-            "safer-buffer": "2.1.2"
+            "safer-buffer": ">= 2.1.2 < 3"
           }
         },
         "qs": {
@@ -1259,7 +1260,7 @@
       "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
       "dev": true,
       "requires": {
-        "hoek": "2.16.3"
+        "hoek": "2.x.x"
       }
     },
     "brace-expansion": {
@@ -1268,7 +1269,7 @@
       "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
       "dev": true,
       "requires": {
-        "balanced-match": "1.0.0",
+        "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
       }
     },
@@ -1278,9 +1279,9 @@
       "integrity": "sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=",
       "dev": true,
       "requires": {
-        "expand-range": "1.8.2",
-        "preserve": "0.2.0",
-        "repeat-element": "1.1.2"
+        "expand-range": "^1.8.1",
+        "preserve": "^0.2.0",
+        "repeat-element": "^1.1.2"
       }
     },
     "brorand": {
@@ -1301,11 +1302,11 @@
       "integrity": "sha1-Xncl297x/Vkw1OurSFZ85FHEigo=",
       "dev": true,
       "requires": {
-        "buffer-xor": "1.0.3",
-        "cipher-base": "1.0.4",
-        "create-hash": "1.1.3",
-        "evp_bytestokey": "1.0.0",
-        "inherits": "2.0.3"
+        "buffer-xor": "^1.0.2",
+        "cipher-base": "^1.0.0",
+        "create-hash": "^1.1.0",
+        "evp_bytestokey": "^1.0.0",
+        "inherits": "^2.0.1"
       }
     },
     "browserify-sha3": {
@@ -1314,7 +1315,7 @@
       "integrity": "sha1-P/NKMAbvFcD7NWflQbkaI0ASPRE=",
       "dev": true,
       "requires": {
-        "js-sha3": "0.3.1"
+        "js-sha3": "^0.3.1"
       }
     },
     "bs58": {
@@ -1323,7 +1324,7 @@
       "integrity": "sha1-1MJjiL9IBMrHFBQbGUWqR+XrJI4=",
       "dev": true,
       "requires": {
-        "base-x": "1.1.0"
+        "base-x": "^1.1.0"
       }
     },
     "bs58check": {
@@ -1332,8 +1333,8 @@
       "integrity": "sha1-xSVABzdJEXcU+gQsMEfrj5FRy/g=",
       "dev": true,
       "requires": {
-        "bs58": "3.1.0",
-        "create-hash": "1.1.3"
+        "bs58": "^3.1.0",
+        "create-hash": "^1.1.0"
       }
     },
     "buffer-from": {
@@ -1395,7 +1396,7 @@
       "integrity": "sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=",
       "dev": true,
       "requires": {
-        "callsites": "0.2.0"
+        "callsites": "^0.2.0"
       }
     },
     "callsites": {
@@ -1423,8 +1424,8 @@
       "dev": true,
       "optional": true,
       "requires": {
-        "align-text": "0.1.4",
-        "lazy-cache": "1.0.4"
+        "align-text": "^0.1.3",
+        "lazy-cache": "^1.0.3"
       }
     },
     "chai": {
@@ -1433,12 +1434,12 @@
       "integrity": "sha1-ZuISeebzxkFf+CMYeCJ5AOIXGzk=",
       "dev": true,
       "requires": {
-        "assertion-error": "1.0.2",
-        "check-error": "1.0.2",
-        "deep-eql": "2.0.2",
-        "get-func-name": "2.0.0",
-        "pathval": "1.1.0",
-        "type-detect": "4.0.3"
+        "assertion-error": "^1.0.1",
+        "check-error": "^1.0.1",
+        "deep-eql": "^2.0.1",
+        "get-func-name": "^2.0.0",
+        "pathval": "^1.0.0",
+        "type-detect": "^4.0.0"
       }
     },
     "chai-as-promised": {
@@ -1447,7 +1448,7 @@
       "integrity": "sha512-azL6xMoi+uxu6z4rhWQ1jbdUhOMhis2PvscD/xjLqNMkv3BPPp2JyyuTHOrf9BOosGpNQ11v6BKv/g57RXbiaA==",
       "dev": true,
       "requires": {
-        "check-error": "1.0.2"
+        "check-error": "^1.0.2"
       }
     },
     "chai-bignumber": {
@@ -1462,11 +1463,11 @@
       "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
       "dev": true,
       "requires": {
-        "ansi-styles": "2.2.1",
-        "escape-string-regexp": "1.0.5",
-        "has-ansi": "2.0.0",
-        "strip-ansi": "3.0.1",
-        "supports-color": "2.0.0"
+        "ansi-styles": "^2.2.1",
+        "escape-string-regexp": "^1.0.2",
+        "has-ansi": "^2.0.0",
+        "strip-ansi": "^3.0.0",
+        "supports-color": "^2.0.0"
       }
     },
     "chardet": {
@@ -1487,7 +1488,7 @@
       "integrity": "sha1-BOTLUWuRQziTWB5tRgGnjpVS6gY=",
       "dev": true,
       "requires": {
-        "functional-red-black-tree": "1.0.1"
+        "functional-red-black-tree": "^1.0.1"
       }
     },
     "chokidar": {
@@ -1496,15 +1497,15 @@
       "integrity": "sha1-eY5ol3gVHIB2tLNg5e3SjNortGg=",
       "dev": true,
       "requires": {
-        "anymatch": "1.3.2",
-        "async-each": "1.0.1",
-        "fsevents": "1.2.3",
-        "glob-parent": "2.0.0",
-        "inherits": "2.0.3",
-        "is-binary-path": "1.0.1",
-        "is-glob": "2.0.1",
-        "path-is-absolute": "1.0.1",
-        "readdirp": "2.1.0"
+        "anymatch": "^1.3.0",
+        "async-each": "^1.0.0",
+        "fsevents": "^1.0.0",
+        "glob-parent": "^2.0.0",
+        "inherits": "^2.0.1",
+        "is-binary-path": "^1.0.0",
+        "is-glob": "^2.0.0",
+        "path-is-absolute": "^1.0.0",
+        "readdirp": "^2.0.0"
       }
     },
     "chownr": {
@@ -1519,8 +1520,8 @@
       "integrity": "sha512-Kkht5ye6ZGmwv40uUDZztayT2ThLQGfnj/T71N/XzeZeo3nf8foyW7zGTsPYkEya3m5f3cAypH+qe7YOrM1U2Q==",
       "dev": true,
       "requires": {
-        "inherits": "2.0.3",
-        "safe-buffer": "5.1.1"
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.0.1"
       }
     },
     "circular-json": {
@@ -1535,7 +1536,7 @@
       "integrity": "sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=",
       "dev": true,
       "requires": {
-        "restore-cursor": "2.0.0"
+        "restore-cursor": "^2.0.0"
       }
     },
     "cli-spinners": {
@@ -1568,7 +1569,7 @@
       "dev": true,
       "requires": {
         "slice-ansi": "0.0.4",
-        "string-width": "1.0.2"
+        "string-width": "^1.0.1"
       },
       "dependencies": {
         "slice-ansi": {
@@ -1591,9 +1592,9 @@
       "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"
       }
     },
     "clone": {
@@ -1614,7 +1615,7 @@
       "integrity": "sha1-0dyXOSAxTfZ/vrlCI7TuNQI56Ws=",
       "dev": true,
       "requires": {
-        "mimic-response": "1.0.0"
+        "mimic-response": "^1.0.0"
       }
     },
     "clone-stats": {
@@ -1629,9 +1630,9 @@
       "integrity": "sha512-Bq6+4t+lbM8vhTs/Bef5c5AdEMtapp/iFb6+s4/Hh9MVTt8OLKH7ZOOZSCT+Ys7hsHvqv0GuMPJ1lnQJVHvxpg==",
       "dev": true,
       "requires": {
-        "inherits": "2.0.3",
-        "process-nextick-args": "2.0.0",
-        "readable-stream": "2.3.6"
+        "inherits": "^2.0.1",
+        "process-nextick-args": "^2.0.0",
+        "readable-stream": "^2.3.5"
       },
       "dependencies": {
         "process-nextick-args": {
@@ -1646,13 +1647,13 @@
           "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "dev": true,
           "requires": {
-            "core-util-is": "1.0.2",
-            "inherits": "2.0.3",
-            "isarray": "1.0.0",
-            "process-nextick-args": "2.0.0",
-            "safe-buffer": "5.1.1",
-            "string_decoder": "1.1.1",
-            "util-deprecate": "1.0.2"
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
           }
         },
         "string_decoder": {
@@ -1661,7 +1662,7 @@
           "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
           "dev": true,
           "requires": {
-            "safe-buffer": "5.1.1"
+            "safe-buffer": "~5.1.0"
           }
         }
       }
@@ -1684,8 +1685,8 @@
       "integrity": "sha1-zbYzY6lhUCQEolr7gsLibV/2J6Q=",
       "dev": true,
       "requires": {
-        "bs58": "2.0.1",
-        "create-hash": "1.1.3"
+        "bs58": "^2.0.1",
+        "create-hash": "^1.1.1"
       },
       "dependencies": {
         "bs58": {
@@ -1702,7 +1703,7 @@
       "integrity": "sha512-mjGanIiwQJskCC18rPR6OmrZ6fm2Lc7PeGFYwCmy5J34wC6F1PzdGL6xeMfmgicfYcNLGuVFA3WzXtIDCQSZxQ==",
       "dev": true,
       "requires": {
-        "color-name": "1.1.3"
+        "color-name": "^1.1.1"
       }
     },
     "color-name": {
@@ -1723,7 +1724,7 @@
       "integrity": "sha1-k4NwpXtKUd6ix3wV1cX9+JUWQAk=",
       "dev": true,
       "requires": {
-        "delayed-stream": "1.0.0"
+        "delayed-stream": "~1.0.0"
       }
     },
     "commander": {
@@ -1750,9 +1751,9 @@
       "integrity": "sha1-CqxmL9Ur54lk1VMvaUeE5wEQrPc=",
       "dev": true,
       "requires": {
-        "inherits": "2.0.3",
-        "readable-stream": "2.3.3",
-        "typedarray": "0.0.6"
+        "inherits": "^2.0.3",
+        "readable-stream": "^2.2.2",
+        "typedarray": "^0.0.6"
       }
     },
     "console-control-strings": {
@@ -1815,8 +1816,8 @@
       "integrity": "sha1-K9OB8usgECAQXNUOpZ2mMJBpRoY=",
       "dev": true,
       "requires": {
-        "object-assign": "4.1.1",
-        "vary": "1.1.2"
+        "object-assign": "^4",
+        "vary": "^1"
       }
     },
     "coveralls": {
@@ -1846,10 +1847,10 @@
       "integrity": "sha1-YGBCrIuSYnUPSDyt2rD1gZFy2P0=",
       "dev": true,
       "requires": {
-        "cipher-base": "1.0.4",
-        "inherits": "2.0.3",
-        "ripemd160": "2.0.1",
-        "sha.js": "2.4.8"
+        "cipher-base": "^1.0.1",
+        "inherits": "^2.0.1",
+        "ripemd160": "^2.0.0",
+        "sha.js": "^2.4.0"
       }
     },
     "create-hmac": {
@@ -1858,12 +1859,12 @@
       "integrity": "sha1-rLniIaThe9sHbpBlfEK5PjcmzwY=",
       "dev": true,
       "requires": {
-        "cipher-base": "1.0.4",
-        "create-hash": "1.1.3",
-        "inherits": "2.0.3",
-        "ripemd160": "2.0.1",
-        "safe-buffer": "5.1.1",
-        "sha.js": "2.4.8"
+        "cipher-base": "^1.0.3",
+        "create-hash": "^1.1.0",
+        "inherits": "^2.0.1",
+        "ripemd160": "^2.0.0",
+        "safe-buffer": "^5.0.1",
+        "sha.js": "^2.4.8"
       }
     },
     "cross-spawn": {
@@ -1872,9 +1873,9 @@
       "integrity": "sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=",
       "dev": true,
       "requires": {
-        "lru-cache": "4.1.1",
-        "shebang-command": "1.2.0",
-        "which": "1.3.0"
+        "lru-cache": "^4.0.1",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
       },
       "dependencies": {
         "lru-cache": {
@@ -1883,8 +1884,8 @@
           "integrity": "sha512-q4spe4KTfsAS1SUHLO0wz8Qiyf1+vMIAgpRYioFYDMNqKfHQbg+AVDH3i4fvpl71/P1L0dBl+fQi+P37UYf0ew==",
           "dev": true,
           "requires": {
-            "pseudomap": "1.0.2",
-            "yallist": "2.1.2"
+            "pseudomap": "^1.0.2",
+            "yallist": "^2.1.2"
           }
         }
       }
@@ -1895,7 +1896,7 @@
       "integrity": "sha1-O9/s3GCBR8HGcgL6KR59ylnqo7g=",
       "dev": true,
       "requires": {
-        "boom": "2.10.1"
+        "boom": "2.x.x"
       }
     },
     "crypto-js": {
@@ -1916,7 +1917,7 @@
       "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
       "dev": true,
       "requires": {
-        "assert-plus": "1.0.0"
+        "assert-plus": "^1.0.0"
       },
       "dependencies": {
         "assert-plus": {
@@ -1972,7 +1973,7 @@
       "integrity": "sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=",
       "dev": true,
       "requires": {
-        "mimic-response": "1.0.0"
+        "mimic-response": "^1.0.0"
       }
     },
     "deep-eql": {
@@ -1981,7 +1982,7 @@
       "integrity": "sha1-sbrAblbwp2d3aG1Qyf63XC7XZ5o=",
       "dev": true,
       "requires": {
-        "type-detect": "3.0.0"
+        "type-detect": "^3.0.0"
       },
       "dependencies": {
         "type-detect": {
@@ -2016,7 +2017,7 @@
       "integrity": "sha512-uukrWD2bguRtXilKt6cAWKyoXrTSMo5m7crUdLfWQmu8kIm88w3QZoUL+6nhpfKVmhHANER6Re3sKoNoZ3IKMA==",
       "dev": true,
       "requires": {
-        "abstract-leveldown": "2.6.2"
+        "abstract-leveldown": "~2.6.0"
       }
     },
     "define-properties": {
@@ -2025,8 +2026,8 @@
       "integrity": "sha1-g6c/L+pWmJj7c3GTyPhzyvbUXJQ=",
       "dev": true,
       "requires": {
-        "foreach": "2.0.5",
-        "object-keys": "1.0.11"
+        "foreach": "^2.0.5",
+        "object-keys": "^1.0.8"
       },
       "dependencies": {
         "object-keys": {
@@ -2049,13 +2050,13 @@
       "integrity": "sha1-wSyYHQZ4RshLyvhiz/kw2Qf/0ag=",
       "dev": true,
       "requires": {
-        "globby": "5.0.0",
-        "is-path-cwd": "1.0.0",
-        "is-path-in-cwd": "1.0.0",
-        "object-assign": "4.1.1",
-        "pify": "2.3.0",
-        "pinkie-promise": "2.0.1",
-        "rimraf": "2.6.1"
+        "globby": "^5.0.0",
+        "is-path-cwd": "^1.0.0",
+        "is-path-in-cwd": "^1.0.0",
+        "object-assign": "^4.0.1",
+        "pify": "^2.0.0",
+        "pinkie-promise": "^2.0.0",
+        "rimraf": "^2.2.8"
       }
     },
     "delayed-stream": {
@@ -2094,7 +2095,7 @@
       "integrity": "sha1-920GQ1LN9Docts5hnE7jqUdd4gg=",
       "dev": true,
       "requires": {
-        "repeating": "2.0.1"
+        "repeating": "^2.0.0"
       }
     },
     "diff": {
@@ -2109,7 +2110,7 @@
       "integrity": "sha512-y0tm5Pq6ywp3qSTZ1vPgVdAnbDEoeoc5wlOHXoY1c4Wug/a7JvqHIl7BTvwodaHmejWkK/9dSb3sCYfyo/om8A==",
       "dev": true,
       "requires": {
-        "esutils": "2.0.2"
+        "esutils": "^2.0.2"
       }
     },
     "dom-walk": {
@@ -2130,9 +2131,9 @@
       "integrity": "sha1-Pja2xCs3BDgjzbwzLVjzHiRFSAs=",
       "dev": true,
       "requires": {
-        "browserify-aes": "1.0.6",
-        "create-hash": "1.1.3",
-        "create-hmac": "1.1.6"
+        "browserify-aes": "^1.0.6",
+        "create-hash": "^1.1.2",
+        "create-hmac": "^1.1.4"
       }
     },
     "duplexer3": {
@@ -2148,7 +2149,7 @@
       "dev": true,
       "optional": true,
       "requires": {
-        "jsbn": "0.1.1"
+        "jsbn": "~0.1.0"
       }
     },
     "editions": {
@@ -2181,13 +2182,13 @@
       "integrity": "sha1-ysmvh2LIWDYYcAPI3+GT5eLq5d8=",
       "dev": true,
       "requires": {
-        "bn.js": "4.11.8",
-        "brorand": "1.1.0",
-        "hash.js": "1.1.3",
-        "hmac-drbg": "1.0.1",
-        "inherits": "2.0.3",
-        "minimalistic-assert": "1.0.0",
-        "minimalistic-crypto-utils": "1.0.1"
+        "bn.js": "^4.4.0",
+        "brorand": "^1.0.1",
+        "hash.js": "^1.0.0",
+        "hmac-drbg": "^1.0.0",
+        "inherits": "^2.0.1",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.0"
       }
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@@ -2529,7 +2530,7 @@
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-            "pify": "2.3.0",
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-        "minimatch": "3.0.4",
-        "resolve": "1.4.0",
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+        "acorn": "^5.2.1",
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+        "estraverse": "^4.1.0",
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-        "servify": "0.1.12",
-        "ws": "3.3.3",
-        "xhr-request-promise": "0.1.2"
+        "bn.js": "^4.11.6",
+        "elliptic": "^6.4.0",
+        "keccakjs": "^0.2.1",
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+        "ws": "^3.0.0",
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-        "rlp": "2.0.0"
+        "ethereumjs-util": "^4.0.1",
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@@ -2746,11 +2747,11 @@
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@@ -2761,11 +2762,11 @@
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@@ -2789,8 +2790,8 @@
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-        "webpack-cli": "2.0.14"
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@@ -2805,8 +2806,8 @@
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@@ -2817,8 +2818,8 @@
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+        "ethereum-common": "^0.0.17",
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-            "secp256k1": "3.3.0"
+            "bn.js": "^4.8.0",
+            "create-hash": "^1.1.2",
+            "keccakjs": "^0.2.0",
+            "rlp": "^2.0.0",
+            "secp256k1": "^3.0.1"
           }
         }
       }
@@ -2848,14 +2849,14 @@
       "integrity": "sha1-JboCFcu0wvCxCKb5avKi5i5Fkh8=",
       "dev": true,
       "requires": {
-        "babel-preset-es2015": "6.24.1",
-        "babelify": "7.3.0",
-        "bn.js": "4.11.8",
-        "create-hash": "1.1.3",
-        "ethjs-util": "0.1.4",
-        "keccak": "1.3.0",
-        "rlp": "2.0.0",
-        "secp256k1": "3.3.0"
+        "babel-preset-es2015": "^6.24.0",
+        "babelify": "^7.3.0",
+        "bn.js": "^4.8.0",
+        "create-hash": "^1.1.2",
+        "ethjs-util": "^0.1.3",
+        "keccak": "^1.0.2",
+        "rlp": "^2.0.0",
+        "secp256k1": "^3.0.1"
       }
     },
     "ethereumjs-wallet": {
@@ -2864,13 +2865,13 @@
       "integrity": "sha1-gnY7Fpfuenlr5xVdqd+0my+Yz9s=",
       "dev": true,
       "requires": {
-        "aes-js": "0.2.4",
-        "bs58check": "1.3.4",
-        "ethereumjs-util": "4.5.0",
-        "hdkey": "0.7.1",
-        "scrypt.js": "0.2.0",
-        "utf8": "2.1.2",
-        "uuid": "2.0.3"
+        "aes-js": "^0.2.3",
+        "bs58check": "^1.0.8",
+        "ethereumjs-util": "^4.4.0",
+        "hdkey": "^0.7.0",
+        "scrypt.js": "^0.2.0",
+        "utf8": "^2.1.1",
+        "uuid": "^2.0.1"
       },
       "dependencies": {
         "ethereumjs-util": {
@@ -2879,11 +2880,11 @@
           "integrity": "sha1-PpQosxfuvaPXJg2FT93alUsfG8Y=",
           "dev": true,
           "requires": {
-            "bn.js": "4.11.8",
-            "create-hash": "1.1.3",
-            "keccakjs": "0.2.1",
-            "rlp": "2.0.0",
-            "secp256k1": "3.3.0"
+            "bn.js": "^4.8.0",
+            "create-hash": "^1.1.2",
+            "keccakjs": "^0.2.0",
+            "rlp": "^2.0.0",
+            "secp256k1": "^3.0.1"
           }
         },
         "uuid": {
@@ -2953,7 +2954,7 @@
       "integrity": "sha1-SXtmrZ/vZc18CKYYCCS6FHa2blM=",
       "dev": true,
       "requires": {
-        "create-hash": "1.1.3"
+        "create-hash": "^1.1.1"
       }
     },
     "execa": {
@@ -2962,13 +2963,13 @@
       "integrity": "sha1-lEvs00zEHuMqY6n68nrVpl/Fl3c=",
       "dev": true,
       "requires": {
-        "cross-spawn": "5.1.0",
-        "get-stream": "3.0.0",
-        "is-stream": "1.1.0",
-        "npm-run-path": "2.0.2",
-        "p-finally": "1.0.0",
-        "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",
+        "signal-exit": "^3.0.0",
+        "strip-eof": "^1.0.0"
       }
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     "exit-hook": {
@@ -2983,7 +2984,7 @@
       "integrity": "sha1-3wcoTjQqgHzXM6xa9yQR5YHRF3s=",
       "dev": true,
       "requires": {
-        "is-posix-bracket": "0.1.1"
+        "is-posix-bracket": "^0.1.0"
       }
     },
     "expand-range": {
@@ -2992,7 +2993,7 @@
       "integrity": "sha1-opnv/TNf4nIeuujiV+x5ZE/IUzc=",
       "dev": true,
       "requires": {
-        "fill-range": "2.2.3"
+        "fill-range": "^2.1.0"
       }
     },
     "expand-template": {
@@ -3007,7 +3008,7 @@
       "integrity": "sha1-l+gBqgUt8CRU3kawK/YhZCzchQI=",
       "dev": true,
       "requires": {
-        "homedir-polyfill": "1.0.1"
+        "homedir-polyfill": "^1.0.1"
       }
     },
     "express": {
@@ -3016,36 +3017,36 @@
       "integrity": "sha1-avilAjUNsyRuzEvs9rWjTSL37VM=",
       "dev": true,
       "requires": {
-        "accepts": "1.3.5",
+        "accepts": "~1.3.5",
         "array-flatten": "1.1.1",
         "body-parser": "1.18.2",
         "content-disposition": "0.5.2",
-        "content-type": "1.0.4",
+        "content-type": "~1.0.4",
         "cookie": "0.3.1",
         "cookie-signature": "1.0.6",
         "debug": "2.6.9",
-        "depd": "1.1.2",
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "etag": "1.8.1",
+        "depd": "~1.1.2",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
         "finalhandler": "1.1.1",
         "fresh": "0.5.2",
         "merge-descriptors": "1.0.1",
-        "methods": "1.1.2",
-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
+        "methods": "~1.1.2",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.2",
         "path-to-regexp": "0.1.7",
-        "proxy-addr": "2.0.3",
+        "proxy-addr": "~2.0.3",
         "qs": "6.5.1",
-        "range-parser": "1.2.0",
+        "range-parser": "~1.2.0",
         "safe-buffer": "5.1.1",
         "send": "0.16.2",
         "serve-static": "1.13.2",
         "setprototypeof": "1.1.0",
-        "statuses": "1.4.0",
-        "type-is": "1.6.16",
+        "statuses": "~1.4.0",
+        "type-is": "~1.6.16",
         "utils-merge": "1.0.1",
-        "vary": "1.1.2"
+        "vary": "~1.1.2"
       },
       "dependencies": {
         "body-parser": {
@@ -3055,15 +3056,15 @@
           "dev": true,
           "requires": {
             "bytes": "3.0.0",
-            "content-type": "1.0.4",
+            "content-type": "~1.0.4",
             "debug": "2.6.9",
-            "depd": "1.1.2",
-            "http-errors": "1.6.3",
+            "depd": "~1.1.1",
+            "http-errors": "~1.6.2",
             "iconv-lite": "0.4.19",
-            "on-finished": "2.3.0",
+            "on-finished": "~2.3.0",
             "qs": "6.5.1",
             "raw-body": "2.3.2",
-            "type-is": "1.6.16"
+            "type-is": "~1.6.15"
           }
         },
         "debug": {
@@ -3114,7 +3115,7 @@
                 "depd": "1.1.1",
                 "inherits": "2.0.3",
                 "setprototypeof": "1.0.3",
-                "statuses": "1.4.0"
+                "statuses": ">= 1.3.1 < 2"
               }
             },
             "setprototypeof": {
@@ -3145,9 +3146,9 @@
       "integrity": "sha512-E44iT5QVOUJBKij4IIV3uvxuNlbKS38Tw1HiupxEIHPv9qtC2PrDYohbXV5U+1jnfIXttny8gUhj+oZvflFlzA==",
       "dev": true,
       "requires": {
-        "chardet": "0.4.2",
-        "iconv-lite": "0.4.18",
-        "tmp": "0.0.33"
+        "chardet": "^0.4.0",
+        "iconv-lite": "^0.4.17",
+        "tmp": "^0.0.33"
       }
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     "extglob": {
@@ -3156,7 +3157,7 @@
       "integrity": "sha1-Lhj/PS9JqydlzskCPwEdqo2DSaE=",
       "dev": true,
       "requires": {
-        "is-extglob": "1.0.0"
+        "is-extglob": "^1.0.0"
       }
     },
     "extsprintf": {
@@ -3171,7 +3172,7 @@
       "integrity": "sha1-S4w6z7Ugr635hgsfFM2M40As3dM=",
       "dev": true,
       "requires": {
-        "checkpoint-store": "1.1.0"
+        "checkpoint-store": "^1.1.0"
       }
     },
     "fast-deep-equal": {
@@ -3198,7 +3199,7 @@
       "integrity": "sha1-OrGi0qYsi/tDGgyUy3l6L84nyWI=",
       "dev": true,
       "requires": {
-        "escape-string-regexp": "1.0.5"
+        "escape-string-regexp": "^1.0.5"
       }
     },
     "file-entry-cache": {
@@ -3207,8 +3208,8 @@
       "integrity": "sha1-w5KZDD5oR4PYOLjISkXYoEhFg2E=",
       "dev": true,
       "requires": {
-        "flat-cache": "1.3.0",
-        "object-assign": "4.1.1"
+        "flat-cache": "^1.2.1",
+        "object-assign": "^4.0.1"
       }
     },
     "filename-regex": {
@@ -3223,11 +3224,11 @@
       "integrity": "sha1-ULd9/X5Gm8dJJHCWNpn+eoSFpyM=",
       "dev": true,
       "requires": {
-        "is-number": "2.1.0",
-        "isobject": "2.1.0",
-        "randomatic": "1.1.7",
-        "repeat-element": "1.1.2",
-        "repeat-string": "1.6.1"
+        "is-number": "^2.1.0",
+        "isobject": "^2.0.0",
+        "randomatic": "^1.1.3",
+        "repeat-element": "^1.1.2",
+        "repeat-string": "^1.5.2"
       }
     },
     "finalhandler": {
@@ -3237,12 +3238,12 @@
       "dev": true,
       "requires": {
         "debug": "2.6.9",
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
-        "statuses": "1.4.0",
-        "unpipe": "1.0.0"
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.2",
+        "statuses": "~1.4.0",
+        "unpipe": "~1.0.0"
       },
       "dependencies": {
         "debug": {
@@ -3268,8 +3269,8 @@
       "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"
       }
     },
     "first-chunk-stream": {
@@ -3278,7 +3279,7 @@
       "integrity": "sha1-G97NuOCDwGZLkZRVgVd6Q6nzHXA=",
       "dev": true,
       "requires": {
-        "readable-stream": "2.3.3"
+        "readable-stream": "^2.0.2"
       }
     },
     "flat-cache": {
@@ -3287,10 +3288,10 @@
       "integrity": "sha1-0wMLMrOBVPTjt+nHCfSQ9++XxIE=",
       "dev": true,
       "requires": {
-        "circular-json": "0.3.3",
-        "del": "2.2.2",
-        "graceful-fs": "4.1.11",
-        "write": "0.2.1"
+        "circular-json": "^0.3.1",
+        "del": "^2.0.2",
+        "graceful-fs": "^4.1.2",
+        "write": "^0.2.1"
       }
     },
     "flow-parser": {
@@ -3305,7 +3306,7 @@
       "integrity": "sha1-LEBFC5NI6X8oEyJZO6lnBLmr1NQ=",
       "dev": true,
       "requires": {
-        "is-function": "1.0.1"
+        "is-function": "~1.0.0"
       }
     },
     "for-in": {
@@ -3320,7 +3321,7 @@
       "integrity": "sha1-UmXGgaTylNq78XyVCbZ2OqhFEM4=",
       "dev": true,
       "requires": {
-        "for-in": "1.0.2"
+        "for-in": "^1.0.1"
       }
     },
     "foreach": {
@@ -3341,9 +3342,9 @@
       "integrity": "sha1-M8GDrPGTJ27KqYFDpp6Uv+4XUNE=",
       "dev": true,
       "requires": {
-        "asynckit": "0.4.0",
-        "combined-stream": "1.0.5",
-        "mime-types": "2.1.16"
+        "asynckit": "^0.4.0",
+        "combined-stream": "^1.0.5",
+        "mime-types": "^2.1.12"
       }
     },
     "forwarded": {
@@ -3364,8 +3365,8 @@
       "integrity": "sha1-i/tVAr3kpNNs/e6gB/zKIdfjgq8=",
       "dev": true,
       "requires": {
-        "inherits": "2.0.3",
-        "readable-stream": "2.3.3"
+        "inherits": "^2.0.1",
+        "readable-stream": "^2.0.0"
       }
     },
     "fs-extra": {
@@ -3374,11 +3375,11 @@
       "integrity": "sha1-8jP/zAjU2n1DLapEl3aYnbHfk/A=",
       "dev": true,
       "requires": {
-        "graceful-fs": "4.1.11",
-        "jsonfile": "2.4.0",
-        "klaw": "1.3.1",
-        "path-is-absolute": "1.0.1",
-        "rimraf": "2.6.1"
+        "graceful-fs": "^4.1.2",
+        "jsonfile": "^2.1.0",
+        "klaw": "^1.0.0",
+        "path-is-absolute": "^1.0.0",
+        "rimraf": "^2.2.8"
       }
     },
     "fs.realpath": {
@@ -3394,8 +3395,8 @@
       "dev": true,
       "optional": true,
       "requires": {
-        "nan": "2.10.0",
-        "node-pre-gyp": "0.9.1"
+        "nan": "^2.9.2",
+        "node-pre-gyp": "^0.9.0"
       },
       "dependencies": {
         "abbrev": {
@@ -3421,8 +3422,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "delegates": "1.0.0",
-            "readable-stream": "2.3.6"
+            "delegates": "^1.0.0",
+            "readable-stream": "^2.0.6"
           }
         },
         "balanced-match": {
@@ -3435,7 +3436,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "balanced-match": "1.0.0",
+            "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
           }
         },
@@ -3499,7 +3500,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "minipass": "2.2.4"
+            "minipass": "^2.2.1"
           }
         },
         "fs.realpath": {
@@ -3514,14 +3515,14 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "aproba": "1.2.0",
-            "console-control-strings": "1.1.0",
-            "has-unicode": "2.0.1",
-            "object-assign": "4.1.1",
-            "signal-exit": "3.0.2",
-            "string-width": "1.0.2",
-            "strip-ansi": "3.0.1",
-            "wide-align": "1.1.2"
+            "aproba": "^1.0.3",
+            "console-control-strings": "^1.0.0",
+            "has-unicode": "^2.0.0",
+            "object-assign": "^4.1.0",
+            "signal-exit": "^3.0.0",
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1",
+            "wide-align": "^1.1.0"
           }
         },
         "glob": {
@@ -3530,12 +3531,12 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "fs.realpath": "1.0.0",
-            "inflight": "1.0.6",
-            "inherits": "2.0.3",
-            "minimatch": "3.0.4",
-            "once": "1.4.0",
-            "path-is-absolute": "1.0.1"
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.0.4",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
           }
         },
         "has-unicode": {
@@ -3550,7 +3551,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "safer-buffer": "2.1.2"
+            "safer-buffer": "^2.1.0"
           }
         },
         "ignore-walk": {
@@ -3559,7 +3560,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "minimatch": "3.0.4"
+            "minimatch": "^3.0.4"
           }
         },
         "inflight": {
@@ -3568,8 +3569,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "once": "1.4.0",
-            "wrappy": "1.0.2"
+            "once": "^1.3.0",
+            "wrappy": "1"
           }
         },
         "inherits": {
@@ -3588,7 +3589,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
           }
         },
         "isarray": {
@@ -3602,7 +3603,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "brace-expansion": "1.1.11"
+            "brace-expansion": "^1.1.7"
           }
         },
         "minimist": {
@@ -3615,8 +3616,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "safe-buffer": "5.1.1",
-            "yallist": "3.0.2"
+            "safe-buffer": "^5.1.1",
+            "yallist": "^3.0.0"
           }
         },
         "minizlib": {
@@ -3625,7 +3626,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "minipass": "2.2.4"
+            "minipass": "^2.2.1"
           }
         },
         "mkdirp": {
@@ -3655,9 +3656,9 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "debug": "2.6.9",
-            "iconv-lite": "0.4.21",
-            "sax": "1.2.4"
+            "debug": "^2.1.2",
+            "iconv-lite": "^0.4.4",
+            "sax": "^1.2.4"
           }
         },
         "node-pre-gyp": {
@@ -3666,16 +3667,16 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "detect-libc": "1.0.3",
-            "mkdirp": "0.5.1",
-            "needle": "2.2.0",
-            "nopt": "4.0.1",
-            "npm-packlist": "1.1.10",
-            "npmlog": "4.1.2",
-            "rc": "1.2.6",
-            "rimraf": "2.6.2",
-            "semver": "5.5.0",
-            "tar": "4.4.1"
+            "detect-libc": "^1.0.2",
+            "mkdirp": "^0.5.1",
+            "needle": "^2.2.0",
+            "nopt": "^4.0.1",
+            "npm-packlist": "^1.1.6",
+            "npmlog": "^4.0.2",
+            "rc": "^1.1.7",
+            "rimraf": "^2.6.1",
+            "semver": "^5.3.0",
+            "tar": "^4"
           }
         },
         "nopt": {
@@ -3684,8 +3685,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "abbrev": "1.1.1",
-            "osenv": "0.1.5"
+            "abbrev": "1",
+            "osenv": "^0.1.4"
           }
         },
         "npm-bundled": {
@@ -3700,8 +3701,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "ignore-walk": "3.0.1",
-            "npm-bundled": "1.0.3"
+            "ignore-walk": "^3.0.1",
+            "npm-bundled": "^1.0.1"
           }
         },
         "npmlog": {
@@ -3710,10 +3711,10 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "are-we-there-yet": "1.1.4",
-            "console-control-strings": "1.1.0",
-            "gauge": "2.7.4",
-            "set-blocking": "2.0.0"
+            "are-we-there-yet": "~1.1.2",
+            "console-control-strings": "~1.1.0",
+            "gauge": "~2.7.3",
+            "set-blocking": "~2.0.0"
           }
         },
         "number-is-nan": {
@@ -3732,7 +3733,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "wrappy": "1.0.2"
+            "wrappy": "1"
           }
         },
         "os-homedir": {
@@ -3753,8 +3754,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "os-homedir": "1.0.2",
-            "os-tmpdir": "1.0.2"
+            "os-homedir": "^1.0.0",
+            "os-tmpdir": "^1.0.0"
           }
         },
         "path-is-absolute": {
@@ -3775,10 +3776,10 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "deep-extend": "0.4.2",
-            "ini": "1.3.5",
-            "minimist": "1.2.0",
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@@ -3795,13 +3796,13 @@
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-            "util-deprecate": "1.0.2"
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@@ -3810,7 +3811,7 @@
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+            "glob": "^7.0.5"
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@@ -3853,9 +3854,9 @@
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-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
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@@ -3864,7 +3865,7 @@
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+            "safe-buffer": "~5.1.0"
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@@ -3872,7 +3873,7 @@
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+            "ansi-regex": "^2.0.0"
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@@ -3887,13 +3888,13 @@
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-            "mkdirp": "0.5.1",
-            "safe-buffer": "5.1.1",
-            "yallist": "3.0.2"
+            "chownr": "^1.0.1",
+            "fs-minipass": "^1.2.5",
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+            "minizlib": "^1.1.0",
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+            "string-width": "^1.0.2"
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-        "webpack-cli": "2.0.14"
+        "source-map-support": "^0.5.3",
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@@ -3957,7 +3958,7 @@
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+            "source-map": "^0.6.0"
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@@ -3968,14 +3969,14 @@
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-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1",
-        "wide-align": "1.1.2"
+        "aproba": "^1.0.3",
+        "console-control-strings": "^1.0.0",
+        "has-unicode": "^2.0.0",
+        "object-assign": "^4.1.0",
+        "signal-exit": "^3.0.0",
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1",
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@@ -3990,7 +3991,7 @@
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       "dev": true,
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@@ -4017,7 +4018,7 @@
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-        "got": "7.1.0",
-        "is-plain-obj": "1.1.0"
+        "got": "^7.0.0",
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-            "timed-out": "4.0.1",
-            "url-parse-lax": "1.0.0",
-            "url-to-options": "1.0.1"
+            "decompress-response": "^3.2.0",
+            "duplexer3": "^0.1.4",
+            "get-stream": "^3.0.0",
+            "is-plain-obj": "^1.1.0",
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+            "is-stream": "^1.0.0",
+            "isurl": "^1.0.0-alpha5",
+            "lowercase-keys": "^1.0.0",
+            "p-cancelable": "^0.3.0",
+            "p-timeout": "^1.1.1",
+            "safe-buffer": "^5.0.1",
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@@ -4072,7 +4073,7 @@
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           "dev": true,
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-            "p-finally": "1.0.0"
+            "p-finally": "^1.0.0"
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@@ -4087,7 +4088,7 @@
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           "dev": true,
           "requires": {
-            "prepend-http": "1.0.4"
+            "prepend-http": "^1.0.1"
           }
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@@ -4104,7 +4105,7 @@
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       "dev": true,
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+        "gh-got": "^6.0.0"
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@@ -4113,12 +4114,12 @@
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-        "inflight": "1.0.6",
-        "inherits": "2.0.3",
-        "minimatch": "3.0.4",
-        "once": "1.4.0",
-        "path-is-absolute": "1.0.1"
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
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@@ -4127,8 +4128,8 @@
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       "requires": {
-        "glob": "7.1.2",
-        "yargs": "1.2.6"
+        "glob": "^7.0.5",
+        "yargs": "~1.2.6"
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@@ -4143,7 +4144,7 @@
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           "dev": true,
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-            "minimist": "0.1.0"
+            "minimist": "^0.1.0"
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@@ -4154,8 +4155,8 @@
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-        "glob-parent": "2.0.0",
-        "is-glob": "2.0.1"
+        "glob-parent": "^2.0.0",
+        "is-glob": "^2.0.0"
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@@ -4164,7 +4165,7 @@
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       "dev": true,
       "requires": {
-        "is-glob": "2.0.1"
+        "is-glob": "^2.0.0"
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@@ -4173,8 +4174,8 @@
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       "dev": true,
       "requires": {
-        "min-document": "2.19.0",
-        "process": "0.5.2"
+        "min-document": "^2.19.0",
+        "process": "~0.5.1"
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@@ -4183,9 +4184,9 @@
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-        "global-prefix": "1.0.2",
-        "is-windows": "1.0.2",
-        "resolve-dir": "1.0.1"
+        "global-prefix": "^1.0.1",
+        "is-windows": "^1.0.1",
+        "resolve-dir": "^1.0.0"
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@@ -4194,11 +4195,11 @@
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-        "homedir-polyfill": "1.0.1",
-        "ini": "1.3.4",
-        "is-windows": "1.0.2",
-        "which": "1.3.0"
+        "expand-tilde": "^2.0.2",
+        "homedir-polyfill": "^1.0.1",
+        "ini": "^1.3.4",
+        "is-windows": "^1.0.1",
+        "which": "^1.2.14"
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@@ -4213,12 +4214,12 @@
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       "dev": true,
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-        "arrify": "1.0.1",
-        "glob": "7.1.2",
-        "object-assign": "4.1.1",
-        "pify": "2.3.0",
-        "pinkie-promise": "2.0.1"
+        "array-union": "^1.0.1",
+        "arrify": "^1.0.0",
+        "glob": "^7.0.3",
+        "object-assign": "^4.0.1",
+        "pify": "^2.0.0",
+        "pinkie-promise": "^2.0.0"
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@@ -4227,23 +4228,23 @@
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-        "decompress-response": "3.3.0",
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-        "pify": "3.0.0",
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-        "timed-out": "4.0.1",
-        "url-parse-lax": "3.0.0",
-        "url-to-options": "1.0.1"
+        "@sindresorhus/is": "^0.7.0",
+        "cacheable-request": "^2.1.1",
+        "decompress-response": "^3.3.0",
+        "duplexer3": "^0.1.4",
+        "get-stream": "^3.0.0",
+        "into-stream": "^3.1.0",
+        "is-retry-allowed": "^1.1.0",
+        "isurl": "^1.0.0-alpha5",
+        "lowercase-keys": "^1.0.0",
+        "mimic-response": "^1.0.0",
+        "p-cancelable": "^0.4.0",
+        "p-timeout": "^2.0.1",
+        "pify": "^3.0.0",
+        "safe-buffer": "^5.1.1",
+        "timed-out": "^4.0.1",
+        "url-parse-lax": "^3.0.0",
+        "url-to-options": "^1.0.1"
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@@ -4266,7 +4267,7 @@
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       "dev": true,
       "requires": {
-        "lodash": "4.17.4"
+        "lodash": "^4.17.2"
       }
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@@ -4281,10 +4282,10 @@
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       "dev": true,
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-        "async": "1.5.2",
-        "optimist": "0.6.1",
-        "source-map": "0.4.4",
-        "uglify-js": "2.8.29"
+        "async": "^1.4.0",
+        "optimist": "^0.6.1",
+        "source-map": "^0.4.4",
+        "uglify-js": "^2.6"
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@@ -4293,7 +4294,7 @@
           "integrity": "sha1-66T12pwNyZneaAMti092FzZSA2s=",
           "dev": true,
           "requires": {
-            "amdefine": "1.0.1"
+            "amdefine": ">=0.0.4"
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@@ -4304,10 +4305,10 @@
       "integrity": "sha1-zcvAgYgmWtEZtqWnyKtw7s+10n0=",
       "dev": true,
       "requires": {
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-        "commander": "2.11.0",
-        "is-my-json-valid": "2.16.0",
-        "pinkie-promise": "2.0.1"
+        "chalk": "^1.1.1",
+        "commander": "^2.9.0",
+        "is-my-json-valid": "^2.12.4",
+        "pinkie-promise": "^2.0.0"
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@@ -4316,7 +4317,7 @@
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       "dev": true,
       "requires": {
-        "function-bind": "1.1.0"
+        "function-bind": "^1.0.2"
       }
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@@ -4325,7 +4326,7 @@
       "integrity": "sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=",
       "dev": true,
       "requires": {
-        "ansi-regex": "2.1.1"
+        "ansi-regex": "^2.0.0"
       }
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@@ -4352,7 +4353,7 @@
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       "dev": true,
       "requires": {
-        "has-symbol-support-x": "1.4.2"
+        "has-symbol-support-x": "^1.4.1"
       }
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@@ -4367,7 +4368,7 @@
       "integrity": "sha1-ZuodhW206KVHDK32/OI65SRO8uE=",
       "dev": true,
       "requires": {
-        "inherits": "2.0.3"
+        "inherits": "^2.0.1"
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@@ -4376,8 +4377,8 @@
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       "dev": true,
       "requires": {
-        "inherits": "2.0.3",
-        "minimalistic-assert": "1.0.0"
+        "inherits": "^2.0.3",
+        "minimalistic-assert": "^1.0.0"
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@@ -4386,10 +4387,10 @@
       "integrity": "sha1-B4REvXwWQLD+VA0sm3PVlnjo4cQ=",
       "dev": true,
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-        "boom": "2.10.1",
-        "cryptiles": "2.0.5",
-        "hoek": "2.16.3",
-        "sntp": "1.0.9"
+        "boom": "2.x.x",
+        "cryptiles": "2.x.x",
+        "hoek": "2.x.x",
+        "sntp": "1.x.x"
       }
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@@ -4398,8 +4399,8 @@
       "integrity": "sha1-yu5L6BqneSHpCbjSKN0PKayu5jI=",
       "dev": true,
       "requires": {
-        "coinstring": "2.3.0",
-        "secp256k1": "3.3.0"
+        "coinstring": "^2.0.0",
+        "secp256k1": "^3.0.1"
       }
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     "he": {
@@ -4414,9 +4415,9 @@
       "integrity": "sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=",
       "dev": true,
       "requires": {
-        "hash.js": "1.1.3",
-        "minimalistic-assert": "1.0.0",
-        "minimalistic-crypto-utils": "1.0.1"
+        "hash.js": "^1.0.3",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.1"
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@@ -4431,8 +4432,8 @@
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       "dev": true,
       "requires": {
-        "os-homedir": "1.0.2",
-        "os-tmpdir": "1.0.2"
+        "os-homedir": "^1.0.0",
+        "os-tmpdir": "^1.0.1"
       }
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@@ -4441,7 +4442,7 @@
       "integrity": "sha1-TCu8inWJmP7r9e1oWA921GdotLw=",
       "dev": true,
       "requires": {
-        "parse-passwd": "1.0.0"
+        "parse-passwd": "^1.0.0"
       }
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     "hosted-git-info": {
@@ -4462,10 +4463,10 @@
       "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
       "dev": true,
       "requires": {
-        "depd": "1.1.2",
+        "depd": "~1.1.2",
         "inherits": "2.0.3",
         "setprototypeof": "1.1.0",
-        "statuses": "1.5.0"
+        "statuses": ">= 1.4.0 < 2"
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@@ -4474,9 +4475,9 @@
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       "dev": true,
       "requires": {
-        "assert-plus": "0.2.0",
-        "jsprim": "1.4.1",
-        "sshpk": "1.13.1"
+        "assert-plus": "^0.2.0",
+        "jsprim": "^1.2.2",
+        "sshpk": "^1.7.0"
       }
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@@ -4503,8 +4504,8 @@
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@@ -5994,7 +5995,7 @@
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@@ -6015,7 +6016,7 @@
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+        "brace-expansion": "^1.1.7"
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@@ -6099,8 +6100,8 @@
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@@ -6109,8 +6110,8 @@
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+            "lru-cache": "2",
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@@ -6139,10 +6140,10 @@
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-        "arrify": "1.0.1",
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-        "is-stream": "1.1.0"
+        "encoding": "^0.1.11",
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@@ -6215,8 +6216,8 @@
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+        "chalk": "~0.4.0",
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@@ -6231,9 +6232,9 @@
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+            "ansi-styles": "~1.0.0",
+            "has-color": "~0.1.0",
+            "strip-ansi": "~0.1.0"
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@@ -6256,7 +6257,7 @@
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       "dev": true,
       "requires": {
-        "abbrev": "1.0.9"
+        "abbrev": "1"
       }
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     "normalize-package-data": {
@@ -6265,10 +6266,10 @@
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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"
       }
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     "normalize-path": {
@@ -6277,7 +6278,7 @@
       "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
       "dev": true,
       "requires": {
-        "remove-trailing-separator": "1.0.2"
+        "remove-trailing-separator": "^1.0.1"
       }
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     "normalize-url": {
@@ -6286,9 +6287,9 @@
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       "requires": {
-        "prepend-http": "2.0.0",
-        "query-string": "5.1.1",
-        "sort-keys": "2.0.0"
+        "prepend-http": "^2.0.0",
+        "query-string": "^5.0.1",
+        "sort-keys": "^2.0.0"
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@@ -6297,7 +6298,7 @@
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       "dev": true,
       "requires": {
-        "path-key": "2.0.1"
+        "path-key": "^2.0.0"
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@@ -6306,10 +6307,10 @@
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       "dev": true,
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-        "console-control-strings": "1.1.0",
-        "gauge": "2.7.4",
-        "set-blocking": "2.0.0"
+        "are-we-there-yet": "~1.1.2",
+        "console-control-strings": "~1.1.0",
+        "gauge": "~2.7.3",
+        "set-blocking": "~2.0.0"
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@@ -6366,8 +6367,8 @@
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       "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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@@ -6385,7 +6386,7 @@
       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
       "dev": true,
       "requires": {
-        "wrappy": "1.0.2"
+        "wrappy": "1"
       }
     },
     "onetime": {
@@ -6394,7 +6395,7 @@
       "integrity": "sha1-BnQoIw/WdEOyeUsiu6UotoZ5YtQ=",
       "dev": true,
       "requires": {
-        "mimic-fn": "1.1.0"
+        "mimic-fn": "^1.0.0"
       }
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     "optimist": {
@@ -6403,8 +6404,8 @@
       "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
       "dev": true,
       "requires": {
-        "minimist": "0.0.8",
-        "wordwrap": "0.0.3"
+        "minimist": "~0.0.1",
+        "wordwrap": "~0.0.2"
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@@ -6421,12 +6422,12 @@
       "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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@@ -6435,10 +6436,10 @@
       "integrity": "sha1-N1J9Igrc1Tw5tzVx11QVbV22V6Q=",
       "dev": true,
       "requires": {
-        "chalk": "1.1.3",
-        "cli-cursor": "1.0.2",
-        "cli-spinners": "0.1.2",
-        "object-assign": "4.1.1"
+        "chalk": "^1.1.1",
+        "cli-cursor": "^1.0.2",
+        "cli-spinners": "^0.1.2",
+        "object-assign": "^4.0.1"
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@@ -6447,7 +6448,7 @@
           "integrity": "sha1-ZNo/fValRBLll5S9Ytw1KV6PKYc=",
           "dev": true,
           "requires": {
-            "restore-cursor": "1.0.1"
+            "restore-cursor": "^1.0.1"
           }
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         "onetime": {
@@ -6462,8 +6463,8 @@
           "integrity": "sha1-NGYfRohjJ/7SmRR5FSJS35LapUE=",
           "dev": true,
           "requires": {
-            "exit-hook": "1.1.1",
-            "onetime": "1.1.0"
+            "exit-hook": "^1.0.0",
+            "onetime": "^1.0.0"
           }
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@@ -6486,7 +6487,7 @@
       "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
       "dev": true,
       "requires": {
-        "lcid": "1.0.0"
+        "lcid": "^1.0.0"
       }
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@@ -6507,7 +6508,7 @@
       "integrity": "sha1-kw89Et0fUOdDRFeiLNbwSsatf3E=",
       "dev": true,
       "requires": {
-        "p-reduce": "1.0.0"
+        "p-reduce": "^1.0.0"
       }
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@@ -6540,7 +6541,7 @@
       "integrity": "sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=",
       "dev": true,
       "requires": {
-        "p-limit": "1.1.0"
+        "p-limit": "^1.1.0"
       }
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@@ -6561,7 +6562,7 @@
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       "dev": true,
       "requires": {
-        "p-finally": "1.0.0"
+        "p-finally": "^1.0.0"
       }
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@@ -6570,10 +6571,10 @@
       "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"
       }
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     "parse-headers": {
@@ -6582,7 +6583,7 @@
       "integrity": "sha1-aug6eqJanZtwCswoaYzR8e1+lTY=",
       "dev": true,
       "requires": {
-        "for-each": "0.3.2",
+        "for-each": "^0.3.2",
         "trim": "0.0.1"
       }
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@@ -6592,7 +6593,7 @@
       "integrity": "sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=",
       "dev": true,
       "requires": {
-        "error-ex": "1.3.1"
+        "error-ex": "^1.2.0"
       }
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     "parse-passwd": {
@@ -6613,7 +6614,7 @@
       "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
       "dev": true,
       "requires": {
-        "pinkie-promise": "2.0.1"
+        "pinkie-promise": "^2.0.0"
       }
     },
     "path-is-absolute": {
@@ -6652,9 +6653,9 @@
       "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"
       }
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     "pathval": {
@@ -6669,11 +6670,11 @@
       "integrity": "sha512-+dCHxDH+djNtjgWmvVC/my3SYBAKpKNqKSjLkp+GtWWYe4XPE+e/PSD2aCanlEZZnqPk2uekTKNC/ccbwd2X2Q==",
       "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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     "pegjs": {
@@ -6700,7 +6701,7 @@
       "integrity": "sha1-ITXW36ejWMBprJsXh3YogihFD/o=",
       "dev": true,
       "requires": {
-        "pinkie": "2.0.4"
+        "pinkie": "^2.0.0"
       }
     },
     "pkg-dir": {
@@ -6709,7 +6710,7 @@
       "integrity": "sha1-ektQio1bstYp1EcFb/TpyTFM89Q=",
       "dev": true,
       "requires": {
-        "find-up": "1.1.2"
+        "find-up": "^1.0.0"
       }
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     "pluralize": {
@@ -6724,19 +6725,19 @@
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       "dev": true,
       "requires": {
-        "expand-template": "1.0.3",
+        "expand-template": "^1.0.2",
         "github-from-package": "0.0.0",
-        "minimist": "1.2.0",
-        "mkdirp": "0.5.1",
-        "node-abi": "2.1.0",
-        "noop-logger": "0.1.1",
-        "npmlog": "4.1.2",
-        "os-homedir": "1.0.2",
-        "pump": "1.0.2",
-        "rc": "1.2.1",
-        "simple-get": "1.4.3",
-        "tar-fs": "1.15.3",
-        "tunnel-agent": "0.6.0",
+        "minimist": "^1.2.0",
+        "mkdirp": "^0.5.1",
+        "node-abi": "^2.0.0",
+        "noop-logger": "^0.1.1",
+        "npmlog": "^4.0.1",
+        "os-homedir": "^1.0.1",
+        "pump": "^1.0.1",
+        "rc": "^1.1.6",
+        "simple-get": "^1.4.2",
+        "tar-fs": "^1.13.0",
+        "tunnel-agent": "^0.6.0",
         "xtend": "4.0.1"
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@@ -6752,7 +6753,7 @@
           "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
           "dev": true,
           "requires": {
-            "safe-buffer": "5.1.1"
+            "safe-buffer": "^5.0.1"
           }
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@@ -6817,7 +6818,7 @@
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       "dev": true,
       "requires": {
-        "forwarded": "0.1.2",
+        "forwarded": "~0.1.2",
         "ipaddr.js": "1.6.0"
       }
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@@ -6839,8 +6840,8 @@
       "integrity": "sha1-Oz7mUS+U8OV1U4wXmV+fFpkKXVE=",
       "dev": true,
       "requires": {
-        "end-of-stream": "1.4.0",
-        "once": "1.4.0"
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.1"
       }
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     "punycode": {
@@ -6861,9 +6862,9 @@
       "integrity": "sha512-gjWOsm2SoGlgLEdAGt7a6slVOk9mGiXmPFMqrEhLQ68rhQuBnpfs3+EmlvqKyxnCo9/PPlF+9MtY02S1aFg+Jw==",
       "dev": true,
       "requires": {
-        "decode-uri-component": "0.2.0",
-        "object-assign": "4.1.1",
-        "strict-uri-encode": "1.1.0"
+        "decode-uri-component": "^0.2.0",
+        "object-assign": "^4.1.0",
+        "strict-uri-encode": "^1.0.0"
       }
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     "randomatic": {
@@ -6872,8 +6873,8 @@
       "integrity": "sha512-D5JUjPyJbaJDkuAazpVnSfVkLlpeO3wDlPROTMLGKG1zMFNFRgrciKo1ltz/AzNTkqE0HzDx655QOL51N06how==",
       "dev": true,
       "requires": {
-        "is-number": "3.0.0",
-        "kind-of": "4.0.0"
+        "is-number": "^3.0.0",
+        "kind-of": "^4.0.0"
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@@ -6882,7 +6883,7 @@
           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           },
           "dependencies": {
             "kind-of": {
@@ -6891,7 +6892,7 @@
               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
               "dev": true,
               "requires": {
-                "is-buffer": "1.1.5"
+                "is-buffer": "^1.1.5"
               }
             }
           }
@@ -6902,7 +6903,7 @@
           "integrity": "sha1-IIE989cSkosgc3hpGkUGb65y3Vc=",
           "dev": true,
           "requires": {
-            "is-buffer": "1.1.5"
+            "is-buffer": "^1.1.5"
           }
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@@ -6913,7 +6914,7 @@
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       "dev": true,
       "requires": {
-        "safe-buffer": "5.1.1"
+        "safe-buffer": "^5.1.0"
       }
     },
     "randomhex": {
@@ -6946,7 +6947,7 @@
           "integrity": "sha512-neyTUVFtahjf0mB3dZT77u+8O0QB89jFdnBkd5P1JgYPbPaia3gXXOVL2fq8VyU2gMMD7SaN7QukTB/pmXYvDA==",
           "dev": true,
           "requires": {
-            "safer-buffer": "2.1.2"
+            "safer-buffer": ">= 2.1.2 < 3"
           }
         }
       }
@@ -6957,10 +6958,10 @@
       "integrity": "sha1-LgPo5C7kULjLPc5lvhv4l04d/ZU=",
       "dev": true,
       "requires": {
-        "deep-extend": "0.4.2",
-        "ini": "1.3.4",
-        "minimist": "1.2.0",
-        "strip-json-comments": "2.0.1"
+        "deep-extend": "~0.4.0",
+        "ini": "~1.3.0",
+        "minimist": "^1.2.0",
+        "strip-json-comments": "~2.0.1"
       },
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@@ -6977,8 +6978,8 @@
       "integrity": "sha1-agTAkoAF7Z1C4aasVgDhnLx/9lU=",
       "dev": true,
       "requires": {
-        "pify": "3.0.0",
-        "safe-buffer": "5.1.1"
+        "pify": "^3.0.0",
+        "safe-buffer": "^5.1.1"
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@@ -6995,9 +6996,9 @@
       "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": {
@@ -7006,8 +7007,8 @@
       "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"
       }
     },
     "readable-stream": {
@@ -7016,13 +7017,13 @@
       "integrity": "sha512-m+qzzcn7KUxEmd1gMbchF+Y2eIUbieUaxkWtptyHywrX0rE8QEYqPC07Vuy4Wm32/xE16NcdBctb8S0Xe/5IeQ==",
       "dev": true,
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-        "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": {
@@ -7031,10 +7032,10 @@
       "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"
       }
     },
     "recast": {
@@ -7044,9 +7045,9 @@
       "dev": true,
       "requires": {
         "ast-types": "0.11.3",
-        "esprima": "4.0.0",
-        "private": "0.1.7",
-        "source-map": "0.6.1"
+        "esprima": "~4.0.0",
+        "private": "~0.1.5",
+        "source-map": "~0.6.1"
       },
       "dependencies": {
         "esprima": {
@@ -7069,7 +7070,7 @@
       "integrity": "sha1-hSBLVNuoLVdC4oyWdW70OvUOM4Q=",
       "dev": true,
       "requires": {
-        "resolve": "1.4.0"
+        "resolve": "^1.1.6"
       }
     },
     "regenerate": {
@@ -7090,9 +7091,9 @@
       "integrity": "sha1-On0GdSDLe3F2dp61/4aGkb7+EoM=",
       "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": {
@@ -7101,8 +7102,8 @@
       "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": {
@@ -7111,9 +7112,9 @@
       "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"
       }
     },
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@@ -7128,7 +7129,7 @@
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+        "glob": "^7.0.0",
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-        "lodash": "4.17.4",
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+        "commander": "^2.9.0",
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@@ -7795,9 +7796,9 @@
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-            "wrap-ansi": "2.1.0"
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@@ -7821,7 +7822,7 @@
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@@ -7866,9 +7867,9 @@
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+            "execa": "^0.7.0",
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     "which-module": {
@@ -9279,7 +9281,7 @@
       "integrity": "sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==",
       "dev": true,
       "requires": {
-        "string-width": "1.0.2"
+        "string-width": "^1.0.2"
       }
     },
     "window-size": {
@@ -9300,8 +9302,8 @@
       "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"
       }
     },
     "wrappy": {
@@ -9316,7 +9318,7 @@
       "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
       "dev": true,
       "requires": {
-        "mkdirp": "0.5.1"
+        "mkdirp": "^0.5.1"
       }
     },
     "write-file-atomic": {
@@ -9325,9 +9327,9 @@
       "integrity": "sha1-+Aek8LHZ6ROuekgRLmzDrxmRtF8=",
       "dev": true,
       "requires": {
-        "graceful-fs": "4.1.11",
-        "imurmurhash": "0.1.4",
-        "slide": "1.1.6"
+        "graceful-fs": "^4.1.11",
+        "imurmurhash": "^0.1.4",
+        "slide": "^1.1.5"
       }
     },
     "ws": {
@@ -9336,9 +9338,9 @@
       "integrity": "sha512-nnWLa/NwZSt4KQJu51MYlCcSQ5g7INpOrOMt4XV8j4dqTXdmlUmSHQ8/oLC069ckre0fRsgfvsKwbTdtKLCDkA==",
       "dev": true,
       "requires": {
-        "async-limiter": "1.0.0",
-        "safe-buffer": "5.1.1",
-        "ultron": "1.1.1"
+        "async-limiter": "~1.0.0",
+        "safe-buffer": "~5.1.0",
+        "ultron": "~1.1.0"
       }
     },
     "xhr": {
@@ -9347,10 +9349,10 @@
       "integrity": "sha1-4W5mpF+GmGHu76tBbV7/ci3ECZM=",
       "dev": true,
       "requires": {
-        "global": "4.3.2",
-        "is-function": "1.0.1",
-        "parse-headers": "2.0.1",
-        "xtend": "4.0.1"
+        "global": "~4.3.0",
+        "is-function": "^1.0.1",
+        "parse-headers": "^2.0.0",
+        "xtend": "^4.0.0"
       }
     },
     "xhr-request": {
@@ -9359,13 +9361,13 @@
       "integrity": "sha512-Y7qzEaR3FDtL3fP30k9wO/e+FBnBByZeybKOhASsGP30NIkRAAkKD/sCnLvgEfAIEC1rcmK7YG8f4oEnIrrWzA==",
       "dev": true,
       "requires": {
-        "buffer-to-arraybuffer": "0.0.5",
-        "object-assign": "4.1.1",
-        "query-string": "5.1.1",
-        "simple-get": "2.8.1",
-        "timed-out": "4.0.1",
-        "url-set-query": "1.0.0",
-        "xhr": "2.4.0"
+        "buffer-to-arraybuffer": "^0.0.5",
+        "object-assign": "^4.1.1",
+        "query-string": "^5.0.1",
+        "simple-get": "^2.7.0",
+        "timed-out": "^4.0.1",
+        "url-set-query": "^1.0.0",
+        "xhr": "^2.0.4"
       },
       "dependencies": {
         "simple-get": {
@@ -9374,9 +9376,9 @@
           "integrity": "sha512-lSSHRSw3mQNUGPAYRqo7xy9dhKmxFXIjLjp4KHpf99GEH2VH7C3AM+Qfx6du6jhfUi6Vm7XnbEVEf7Wb6N8jRw==",
           "dev": true,
           "requires": {
-            "decompress-response": "3.3.0",
-            "once": "1.4.0",
-            "simple-concat": "1.0.0"
+            "decompress-response": "^3.3.0",
+            "once": "^1.3.1",
+            "simple-concat": "^1.0.0"
           }
         }
       }
@@ -9387,7 +9389,7 @@
       "integrity": "sha1-NDxE0e53JrhkgGloLQ+EDIO0Jh0=",
       "dev": true,
       "requires": {
-        "xhr-request": "1.1.0"
+        "xhr-request": "^1.0.1"
       }
     },
     "xhr2": {
@@ -9427,9 +9429,9 @@
       "dev": true,
       "optional": 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"
       },
       "dependencies": {
@@ -9447,8 +9449,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "center-align": "0.1.3",
-            "right-align": "0.1.3",
+            "center-align": "^0.1.1",
+            "right-align": "^0.1.1",
             "wordwrap": "0.0.2"
           }
         },
@@ -9474,8 +9476,8 @@
       "integrity": "sha1-hVaN488VD/SfpRgl8DqMiA3cxcQ=",
       "dev": true,
       "requires": {
-        "camelcase": "3.0.0",
-        "lodash.assign": "4.2.0"
+        "camelcase": "^3.0.0",
+        "lodash.assign": "^4.0.6"
       }
     },
     "yeoman-environment": {
@@ -9484,19 +9486,19 @@
       "integrity": "sha512-jzHBTTy8EPI4ImV8dpUMt+Q5zELkSU5xvGpndHcHudQ4tqN6YgIWaCGmRFl+HDchwRUkcgyjQ+n6/w5zlJBCPg==",
       "dev": true,
       "requires": {
-        "chalk": "2.3.2",
-        "debug": "3.1.0",
-        "diff": "3.5.0",
-        "escape-string-regexp": "1.0.5",
-        "globby": "6.1.0",
-        "grouped-queue": "0.3.3",
-        "inquirer": "3.3.0",
-        "is-scoped": "1.0.0",
-        "lodash": "4.17.4",
-        "log-symbols": "2.2.0",
-        "mem-fs": "1.1.3",
-        "text-table": "0.2.0",
-        "untildify": "3.0.2"
+        "chalk": "^2.1.0",
+        "debug": "^3.1.0",
+        "diff": "^3.3.1",
+        "escape-string-regexp": "^1.0.2",
+        "globby": "^6.1.0",
+        "grouped-queue": "^0.3.3",
+        "inquirer": "^3.3.0",
+        "is-scoped": "^1.0.0",
+        "lodash": "^4.17.4",
+        "log-symbols": "^2.1.0",
+        "mem-fs": "^1.1.0",
+        "text-table": "^0.2.0",
+        "untildify": "^3.0.2"
       },
       "dependencies": {
         "ansi-styles": {
@@ -9505,7 +9507,7 @@
           "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
           "dev": true,
           "requires": {
-            "color-convert": "1.9.1"
+            "color-convert": "^1.9.0"
           }
         },
         "chalk": {
@@ -9514,9 +9516,9 @@
           "integrity": "sha512-ZM4j2/ld/YZDc3Ma8PgN7gyAk+kHMMMyzLNryCPGhWrsfAuDVeuid5bpRFTDgMH9JBK2lA4dyyAkkZYF/WcqDQ==",
           "dev": true,
           "requires": {
-            "ansi-styles": "3.2.1",
-            "escape-string-regexp": "1.0.5",
-            "supports-color": "5.3.0"
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
           }
         },
         "debug": {
@@ -9540,11 +9542,11 @@
           "integrity": "sha1-9abXDoOV4hyFj7BInWTfAkJNUGw=",
           "dev": true,
           "requires": {
-            "array-union": "1.0.2",
-            "glob": "7.1.2",
-            "object-assign": "4.1.1",
-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1"
+            "array-union": "^1.0.1",
+            "glob": "^7.0.3",
+            "object-assign": "^4.0.1",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0"
           }
         },
         "has-flag": {
@@ -9559,7 +9561,7 @@
           "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
           "dev": true,
           "requires": {
-            "has-flag": "3.0.0"
+            "has-flag": "^3.0.0"
           }
         }
       }
@@ -9570,31 +9572,31 @@
       "integrity": "sha512-mODmrZ26a94djmGZZuIiomSGlN4wULdou29ZwcySupb2e9FdvoCl7Ps2FqHFjEHio3kOl/iBeaNqrnx3C3NwWg==",
       "dev": true,
       "requires": {
-        "async": "2.6.0",
-        "chalk": "2.3.2",
-        "cli-table": "0.3.1",
-        "cross-spawn": "5.1.0",
-        "dargs": "5.1.0",
-        "dateformat": "3.0.3",
-        "debug": "3.1.0",
-        "detect-conflict": "1.0.1",
-        "error": "7.0.2",
-        "find-up": "2.1.0",
-        "github-username": "4.1.0",
-        "istextorbinary": "2.2.1",
-        "lodash": "4.17.4",
-        "make-dir": "1.2.0",
-        "mem-fs-editor": "3.0.2",
-        "minimist": "1.2.0",
-        "pretty-bytes": "4.0.2",
-        "read-chunk": "2.1.0",
-        "read-pkg-up": "3.0.0",
-        "rimraf": "2.6.2",
-        "run-async": "2.3.0",
-        "shelljs": "0.8.1",
-        "text-table": "0.2.0",
-        "through2": "2.0.3",
-        "yeoman-environment": "2.0.6"
+        "async": "^2.6.0",
+        "chalk": "^2.3.0",
+        "cli-table": "^0.3.1",
+        "cross-spawn": "^5.1.0",
+        "dargs": "^5.1.0",
+        "dateformat": "^3.0.2",
+        "debug": "^3.1.0",
+        "detect-conflict": "^1.0.0",
+        "error": "^7.0.2",
+        "find-up": "^2.1.0",
+        "github-username": "^4.0.0",
+        "istextorbinary": "^2.1.0",
+        "lodash": "^4.17.4",
+        "make-dir": "^1.1.0",
+        "mem-fs-editor": "^3.0.2",
+        "minimist": "^1.2.0",
+        "pretty-bytes": "^4.0.2",
+        "read-chunk": "^2.1.0",
+        "read-pkg-up": "^3.0.0",
+        "rimraf": "^2.6.2",
+        "run-async": "^2.0.0",
+        "shelljs": "^0.8.0",
+        "text-table": "^0.2.0",
+        "through2": "^2.0.0",
+        "yeoman-environment": "^2.0.5"
       },
       "dependencies": {
         "ansi-styles": {
@@ -9603,7 +9605,7 @@
           "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
           "dev": true,
           "requires": {
-            "color-convert": "1.9.1"
+            "color-convert": "^1.9.0"
           }
         },
         "async": {
@@ -9612,7 +9614,7 @@
           "integrity": "sha512-xAfGg1/NTLBBKlHFmnd7PlmUW9KhVQIUuSrYem9xzFUZy13ScvtyGGejaae9iAVRiRq9+Cx7DPFaAAhCpyxyPw==",
           "dev": true,
           "requires": {
-            "lodash": "4.17.4"
+            "lodash": "^4.14.0"
           }
         },
         "chalk": {
@@ -9621,9 +9623,9 @@
           "integrity": "sha512-ZM4j2/ld/YZDc3Ma8PgN7gyAk+kHMMMyzLNryCPGhWrsfAuDVeuid5bpRFTDgMH9JBK2lA4dyyAkkZYF/WcqDQ==",
           "dev": true,
           "requires": {
-            "ansi-styles": "3.2.1",
-            "escape-string-regexp": "1.0.5",
-            "supports-color": "5.3.0"
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
           }
         },
         "debug": {
@@ -9641,7 +9643,7 @@
           "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
           "dev": true,
           "requires": {
-            "locate-path": "2.0.0"
+            "locate-path": "^2.0.0"
           }
         },
         "has-flag": {
@@ -9656,10 +9658,10 @@
           "integrity": "sha1-L19Fq5HjMhYjT9U62rZo607AmTs=",
           "dev": true,
           "requires": {
-            "graceful-fs": "4.1.11",
-            "parse-json": "4.0.0",
-            "pify": "3.0.0",
-            "strip-bom": "3.0.0"
+            "graceful-fs": "^4.1.2",
+            "parse-json": "^4.0.0",
+            "pify": "^3.0.0",
+            "strip-bom": "^3.0.0"
           }
         },
         "minimist": {
@@ -9674,8 +9676,8 @@
           "integrity": "sha1-vjX1Qlvh9/bHRxhPmKeIy5lHfuA=",
           "dev": true,
           "requires": {
-            "error-ex": "1.3.1",
-            "json-parse-better-errors": "1.0.2"
+            "error-ex": "^1.3.1",
+            "json-parse-better-errors": "^1.0.1"
           }
         },
         "path-type": {
@@ -9684,7 +9686,7 @@
           "integrity": "sha512-T2ZUsdZFHgA3u4e5PfPbjd7HDDpxPnQb5jN0SrDsjNSuVXHJqtwTnWqG0B1jZrgmJ/7lj1EmVIByWt1gxGkWvg==",
           "dev": true,
           "requires": {
-            "pify": "3.0.0"
+            "pify": "^3.0.0"
           }
         },
         "pify": {
@@ -9699,9 +9701,9 @@
           "integrity": "sha1-nLxoaXj+5l0WwA4rGcI3/Pbjg4k=",
           "dev": true,
           "requires": {
-            "load-json-file": "4.0.0",
-            "normalize-package-data": "2.4.0",
-            "path-type": "3.0.0"
+            "load-json-file": "^4.0.0",
+            "normalize-package-data": "^2.3.2",
+            "path-type": "^3.0.0"
           }
         },
         "read-pkg-up": {
@@ -9710,8 +9712,8 @@
           "integrity": "sha1-PtSWaF26D4/hGNBpHcUfSh/5bwc=",
           "dev": true,
           "requires": {
-            "find-up": "2.1.0",
-            "read-pkg": "3.0.0"
+            "find-up": "^2.0.0",
+            "read-pkg": "^3.0.0"
           }
         },
         "rimraf": {
@@ -9720,7 +9722,7 @@
           "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
           "dev": true,
           "requires": {
-            "glob": "7.1.2"
+            "glob": "^7.0.5"
           }
         },
         "shelljs": {
@@ -9729,9 +9731,9 @@
           "integrity": "sha512-YA/iYtZpzFe5HyWVGrb02FjPxc4EMCfpoU/Phg9fQoyMC72u9598OUBrsU8IrtwAKG0tO8IYaqbaLIw+k3IRGA==",
           "dev": true,
           "requires": {
-            "glob": "7.1.2",
-            "interpret": "1.0.3",
-            "rechoir": "0.6.2"
+            "glob": "^7.0.0",
+            "interpret": "^1.0.0",
+            "rechoir": "^0.6.2"
           }
         },
         "strip-bom": {
@@ -9746,7 +9748,7 @@
           "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
           "dev": true,
           "requires": {
-            "has-flag": "3.0.0"
+            "has-flag": "^3.0.0"
           }
         }
       }
diff --git a/test/token/ERC721/ERC721Token.test.js b/test/token/ERC721/ERC721Token.test.js
index 0f50d90e0..222823b20 100644
--- a/test/token/ERC721/ERC721Token.test.js
+++ b/test/token/ERC721/ERC721Token.test.js
@@ -77,6 +77,32 @@ contract('ERC721Token', function (accounts) {
       });
     });
 
+    describe('removeTokenFrom', function () {
+      beforeEach(async function () {
+        await this.token._removeTokenFrom(creator, firstTokenId , {from:creator});
+      })
+
+      it('has been removed', async function () {
+        await assertRevert(this.token.tokenOfOwnerByIndex(creator, 1));
+      })
+
+      it('adjusts token list', async function () {
+        const token = await this.token.tokenOfOwnerByIndex(creator, 0);
+        token.toNumber().should.be.equal(secondTokenId);
+      })
+
+      it('adjusts owner count', async function () {
+        const count = await this.token.balanceOf(creator);
+        count.toNumber().should.be.equal(1);
+      })
+
+      it('doesnt adjust supply', async function () {
+        const total = await this.token.totalSupply();
+        total.toNumber().should.be.equal(2);
+      })
+
+    })
+
     describe('metadata', function () {
       const sampleUri = 'mock://mytoken';