DIP 1021--Argument Ownership and Function Calls--Formal Assessment

[Exil]

>  This proposal is one step toward a larger goal outlined in the 
> blog post ['Ownership and Borrowing in 
> D'](https://dlang.org/blog/2019/07/15/ownership-and-borrowing-in-d/).

That's the only line that was added, no other changes were made 
to the core DIP from the first revision to the last. Big ducking 
surprise this got accepted anyways.