Update dependencies.

Author: jonkemp

package.json

@@ -8,22 +8,22 @@
   },
   "dependencies": {
     "bluebird": "^3.5.1",
-    "cheerio": "0.22.0",
-    "css-rules": "^1.0.0",
-    "extend": "^3.0.0",
-    "extract-css": "^1.1.0",
+    "cheerio": "^0.22.0",
+    "css-rules": "^1.0.3",
+    "extend": "^3.0.1",
+    "extract-css": "^1.1.1",
     "flatten": "^1.0.2",
-    "object.pick": "^1.1.1",
-    "slick": "^1.12.1",
+    "object.pick": "^1.3.0",
+    "slick": "^1.12.2",
     "specificity": "^0.3.2"
   },
   "devDependencies": {
     "coveralls": "^3.0.0",
-    "gulp": "^3.9.0",
-    "gulp-eslint": "^4.0.0",
+    "gulp": "^3.9.1",
+    "gulp-eslint": "^4.0.2",
     "gulp-mocha": "^5.0.0",
-    "mocha": "^5.0.0",
-    "nyc": "^11.3.0",
+    "mocha": "^5.0.4",
+    "nyc": "^11.4.1",
     "should": "*",
     "vinyl": "^2.1.0"
   },