Creating named tempfiles

[Martin Nowak via Digitalmars-d]

As you might have noticed already, this functionality is currently 
missing in phobos leading people to write buggy or platform specific code.

We just fixed this in dub.
https://github.com/D-Programming-Language/dub/pull/497

Time to finally add this to phobos, what's missing is someone to 
implement it ;).
https://issues.dlang.org/show_bug.cgi?id=13996