Why the @ in @safe? & UDAs

[Rob T]

>
> And gain what? You force everyone to change their code for 
> essentially zero
> benefit.
>
> - Jonathan M Davis

It's not zero benefit, although it may seem like that over a 
small period of time, it's over an extended period that 
inconsistencies can become a very significant cause of 
productivity loss. I'd rather fix up my old code, and I know how 
horrible that is especially for production code that is in use, 
it's just not fun, but if language stability was more important 
to me than productivity, I would not have made the very painful 
move from C/C++ to D.

--rt