DIP 1018--The Copy Constructor--Final Review

[RazvanN]

On Friday, 1 March 2019 at 14:13:53 UTC, Paolo Invernizzi wrote:
> On Friday, 1 March 2019 at 13:59:41 UTC, Olivier FAURE wrote:
>> [...]
>
> A way to express mutable data in an immutable / const graph is 
> needed since a long time.
>
> - P

The __mutable DIP is on the way. I am currently working on that 
[1]

[1] 
https://github.com/RazvanN7/DIPs/blob/Mutable_Dip/DIPs/DIP1xxx-rn.md