Hi Dave,
I have added a new target to run build in 'dev' mode. By default, it will run in production mode.
By dev mode it means, run `yarn run bundle:dev` and by prod mode, run `yarn run bundle:prod`.
In Mac bundle, added new target `make appbundle-dev` to generate build with command `yarn run bundle:dev`. The default target `make appbundle` will run `yarn run bundle:prod`.
In Windows bundle, If Make.bat file is executed with an argument `dev` like `./Make.bat x86 dev`, it will call `yarn run bundle:dev` otherwise it will run `yarn run bundle:prod`
Please find attached patch and review.
Thanks,
Surinder