Could the package allow for custom Mustache templates to be used when generating commands?

I don't think this is currently an option from what I can see, but is there any way to override the default `command.stub` or `handler.stub` that the package uses when generating commands? It could be useful when a project has its own common patterns which each command uses. I'm finding in one project that I'm making the same changes to the default generated commands and handlers every time.
