DIP66 - Multiple alias this

[Brad Anderson via Digitalmars-d]

On Friday, 10 October 2014 at 17:31:23 UTC, Steven Schveighoffer 
wrote:
> On 10/10/14 1:09 PM, IgorStepanov wrote:
>> I've created DIP for my pull request.
>> DIP: http://wiki.dlang.org/DIP66
>> PR: https://github.com/D-Programming-Language/dmd/pull/3998
>>
>> Please, comment it.
> Hm... not sure you need a DIP.
>
> From page 231 of TDPL: "A class could introduce any number of 
> alias this declarations, thus subtyping any number of types."
>
> -Steve

Igor was asked to write a DIP for it by Walter and Andrei. Here's 
the context: 
https://github.com/D-Programming-Language/dmd/pull/3998#issuecomment-58286631