Reddit improvement proposal - nestest structs

[fred1268]

It'd be neat if you could handle nested structs to control for flow e.g.

type Command struct{
Foo *struct{
Bar ,-b, mandatory
} clap:"foo"
Biz *struct{
Bar ,-b
} clap:"biz"
}

go run main.go foo -b "because bar is required"

go run main.go biz

That being said there's nothing here that prevents the user from doing that themselves