Why is Base64 considered range of ubytes?

[Dukc]

On Monday, 3 June 2019 at 10:14:09 UTC, Jonathan M Davis wrote:
> Regardless, I don't see
> any reason why decode couldn't be made to work with ranges of 
> char if it's
> already working with ranges of ubyte. It might be more than 
> simply changing
> the template constraint due to issues with narrow strings, but 
> it would
> probably be pretty straightforward - and it wouldn't be a 
> breaking change.
>
> - Jonathan M Davis

I'll consider that next time I decide to contribute.