Upgrade vulcanize to 0.7.6.

node_modules/vulcanize/node_modules/update-notifier/node_modules/configstore/node_modules/js-yaml/lib/js-yaml/type/pairs.js

Index: node_modules/vulcanize/node_modules/update-notifier/node_modules/configstore/node_modules/js-yaml/lib/js-yaml/type/pairs.js
diff --git a/node_modules/vulcanize/node_modules/update-notifier/node_modules/configstore/node_modules/js-yaml/lib/js-yaml/type/pairs.js b/node_modules/vulcanize/node_modules/update-notifier/node_modules/configstore/node_modules/js-yaml/lib/js-yaml/type/pairs.js
index da3a02d74223e74229aa393c20677037c6ba81ec..02a0af6bc11dc6279ec8aff0d1e91ed378291b01 100644
--- a/node_modules/vulcanize/node_modules/update-notifier/node_modules/configstore/node_modules/js-yaml/lib/js-yaml/type/pairs.js
+++ b/node_modules/vulcanize/node_modules/update-notifier/node_modules/configstore/node_modules/js-yaml/lib/js-yaml/type/pairs.js
@@ -1,15 +1,16 @@
 'use strict';
 
-
 var Type = require('../type');
 
-
 var _toString = Object.prototype.toString;
 
+function resolveYamlPairs(data) {
+  if (null === data) {
+    return true;
+  }
 
-function resolveYamlPairs(state) {
   var index, length, pair, keys, result,
-      object = state.result;
+      object = data;
 
   result = new Array(object.length);
 
@@ -29,12 +30,32 @@ function resolveYamlPairs(state) {
     result[index] = [ keys[0], pair[keys[0]] ];
   }
 
-  state.result = result;
   return true;
 }
 
+function constructYamlPairs(data) {
+  if (null === data) {
+    return [];
+  }
+
+  var index, length, pair, keys, result,
+      object = data;
+
+  result = new Array(object.length);
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+
+    keys = Object.keys(pair);
+
+    result[index] = [ keys[0], pair[keys[0]] ];
+  }
+
+  return result;
+}
 
 module.exports = new Type('tag:yaml.org,2002:pairs', {
-  loadKind: 'sequence',
-  loadResolver: resolveYamlPairs
+  kind: 'sequence',
+  resolve: resolveYamlPairs,
+  construct: constructYamlPairs
 });