Merge pull request #2351 from angular-fullstack/greenkeeper-babel-plugin-transform-class-properties-6.19.0

babel-plugin-transform-class-properties@6.19.0 untested ⚠️[skip ci]

Author: Awk34

package.json

@@ -58,7 +58,7 @@
     "yeoman-welcome": "^1.0.1"
   },
   "devDependencies": {
-    "babel-plugin-transform-class-properties": "^6.18.0",
+    "babel-plugin-transform-class-properties": "^6.19.0",
     "babel-preset-es2015": "^6.18.0",
     "chai": "^3.5.0",
     "del": "^2.2.0",