Support to withoutRelations param

[trippo]

I think is a good practice to use withoutRelations on job constructor like Laravel job, to prevent relations from being serialized.

withoutRelations doc

Is it possible to include a param to use this functionality?

[brendt]

We're not adding any new features to this package. It's only intended to handle basic jobs, if you need more fine grained control, you should use a dedicated job instead.