DIP 1029---Add throw as Function Attribute---Community Review Round 1

[Adam D. Ruppe]

On Tuesday, 14 January 2020 at 15:18:41 UTC, Arine wrote:
> If this is really just a stepping-stone DIP, what if the next 
> DIP is rejected, but this one is accepted?

This is still a positive step.. I think we have a bad habit of 
rejecting small good steps in favor of larger better steps that 
don't come to pass.

nothrow/throws itself is not amazing, but it would make it more 
likely to be used even by itself.