Add formatter option to have explicit returns

[abelsiqueira]

What and Why

The following returns nothing implicitly:

function foo()
  dict = Dict()
  for x = 1:3
    dict[x] = x^2
  end
end

The correct version must have a return dict in the end. Since this is implicit, it's easy to miss. I recommend adding a formatter option to automatically add return.

Possible Drawbacks

No response

Related Issues

No response