concepts v0.0.1

[Nicholas Wilson via Digitalmars-d-announce]

On Friday, 16 December 2016 at 23:49:18 UTC, Nicholas Wilson 
wrote:
> On Friday, 16 December 2016 at 20:51:19 UTC, Atila Neves wrote:
>> @models!(Foo, isFoo)
>
>
> What happened to the __UDA_ATTACHMENT__ proposal?

Also are UDAs legal after the symbol? i.e. with 
__UDA_ATTACHMENT__ could you do struct Foo @models!isFoo
{
     void foo();
}

  ?