Set minimize context for production (#56)
Set minimize context for production (#56)

@See
https://webpack.js.org/guides/migrating/#uglifyjsplugin-minimize-loaders
nickpith/webpacker,rossta/webpacker,rossta/webpacker,rossta/webpacker,nickpith/webpacker,Davidzhu001/webpacker,gauravtiwari/webpacker,rossta/webpacker,gauravtiwari/webpacker,usertesting/webpacker,shakacode/webpacker_lite,rmckayfleming/webpacker,nickpith/webpacker,rails/webpacker,rmckayfleming/webpacker,rmckayfleming/webpacker,gauravtiwari/webpacker,usertesting/webpacker,usertesting/webpacker,rails/webpacker,Davidzhu001/webpacker,Davidzhu001/webpacker