rvalues -> ref (yup... again!)

[Andrei Alexandrescu]

On 3/28/18 7:50 AM, Timon Gehr wrote:
> "The proposal could be amended to accept mutable ref's depending on the 
> value-judgement balancing these 2 use cases. Sticking with const 
> requires no such value judgement to be made at this time, and it's much 
> easier to relax the spec in the future with emergence of evidence to do 
> so."
> 
> Just get it right the first time. "const" is a serious API restriction, 
> and it shouldn't be forced on anyone, even intermittently until they 
> figure out that it is too restrictive (as well as viral).

A great way to move things forward here, Timon, is to write a pull 
request against the DIP with motivating text and examples.