Call for dsource tutorials upgrade

[Saaa]

>
> I guess you're thinking of a different kind of tutorials than me, then. 
> I'd think at least you'd need writefln/Stdout at some point in your 
> tutorials.  I would think how to use writefln/Stdout would even be the 
> subject of one of the first few tutorials.
>
> --bb

I would suggest using phobos by default as it is the standard library
and adding tango to the category if  it is used instead.

Anybody starting off would see phobos as the std.
(I did :) and still do btw. whether tango is better or not.