std.experimental.testing formal review

[Robert burner Schadek via Digitalmars-d]

This post marks the start of the two week review process of 
std.experimental.testing.

PR: https://github.com/D-Programming-Language/phobos/pull/3207
Dub: http://code.dlang.org/packages/unit-threaded
Doc: See CyberShadow/DAutoTest for up-to-date documentation build

Previous Thread: 
http://forum.dlang.org/post/uzocokshugchescbawlj@forum.dlang.org