fix(package): update clean-webpack-plugin to version 3.0.0

Closes #206

Author: greenkeeper[bot]

package.json

@@ -58,7 +58,7 @@
     "@babel/register": "7.4.0",
     "babel-loader": "8.0.5",
     "chalk": "2.4.2",
-    "clean-webpack-plugin": "1.0.1",
+    "clean-webpack-plugin": "3.0.0",
     "cli-table": "0.3.1",
     "console-clear": "1.1.1",
     "copy-webpack-plugin": "5.0.0",