Bump devDependencies; add Node 4-requiring dependencies to GK ignore …

…list

package.json

@@ -33,33 +33,34 @@
     "xmldom": "^0.1.22"
   },
   "devDependencies": {
-    "babel-eslint": "^6.0.4",
+    "babel-eslint": "^6.1.2",
     "babel-plugin-async-to-promises": "^1.0.4",
     "babel-preset-es2015": "^6.6.0",
     "babel-register": "^6.7.2",
     "chai": "^3.5.0",
-    "chai-as-promised": "^5.2.0",
+    "chai-as-promised": "^6.0.0",
     "del": "^2.2.0",
-    "fs-extra": "^0.30.0",
-    "fs-promise": "^0.5.0",
+    "fs-extra": "^1.0.0",
+    "fs-promise": "^1.0.0",
     "globule": "^1.0.0",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",
     "gulp-coveralls": "^0.1.4",
-    "gulp-if": "^2.0.0",
+    "gulp-if": "^2.0.2",
     "gulp-istanbul": "^1.0.0",
     "gulp-load-plugins": "^1.2.0",
     "gulp-mocha": "^3.0.0",
-    "gulp-sourcemaps": "^1.6.0",
+    "gulp-sourcemaps": "^1.9.1",
     "gulp-standard": "^7.0.1",
     "gulp-util": "^3.0.7",
     "in-publish": "^2.0.0",
     "isparta": "^4.0.0",
     "json-stable-stringify": "^1.0.1",
     "mocha-junit-reporter": "^1.12.1",
-    "normalize-newline": "^2.0.0",
+    "normalize-newline": "^2.1.0",
     "run-sequence": "^1.1.5",
-    "yargs": "^5.0.0"
+    "standard": "^7.1.2",
+    "yargs": "^6.4.0"
   },
   "standard": {
     "parser": "babel-eslint",
@@ -69,5 +70,13 @@
       "expect",
       "DOMParser"
     ]
+  },
+  "greenkeeper": {
+    "ignore": [
+      "babel-eslint",
+      "gulp-standard",
+      "normalize-newline",
+      "standard"
+    ]
   }
 }