dmd 2.029 release

[grauzone]

> Sink is okay, but most my usages belong to one of the two scenarios:
> 1) I need a string representation of an Object - how is Sink useful here? I just want to call obj.toString() and get the result
> 2) I need to print it to stdout, thus I call writeln/Stdout(obj); - Sink is of no use here again.

Needs simple converter code, that safe you from typing trivial stuff 
like this:

toString((char[] s) { writeln(s); });

>     void toString(Sink sink, string format = null) {
>         // what should I do here? How do I avoid allocations? I have to duplicate code anyway
>         char[16] buffer;
>         buffer = std.string.format(buffer, format, _number);
>         sink(buffer);

The idea is to add a format() function that takes sink() for output: 
std.string.format(sink, yourformat, _number);

> Besides, why is it called toString(), if it doesn't give me an object's string representation???


Should be called debug_output() or something similar.