Fixed date to move to ddox for Phobos documentation

[Martin Nowak via Digitalmars-d]

On 06/11/2016 02:24 PM, Jonathan M Davis via Digitalmars-d wrote:
> I'm fine with generating the docs with ddox if that works better, but I sure
> hope that we're not going to then change how we're doing the actual
> documenattion in the source files except that if ddox is smart enough that
> we don't need many of the linking macros, then I could see getting rid of
> some of those from the docs.
> 
> I expect to be able to use version(StdDdoc) and all that and have it do the
> right thing with ddox, or the switch to ddox is going to be very annoying
> from the standpoint of maintaining the code. However, I would assume that
> that's all already been sorted out, since we've been generating the docs
> with ddox alongside the normal documentation for some time now.
> 
> - Jonathan M Davis

It already does all of that (uses dmd's json output atm.), and of course
has a ddoc macro interpreter built-in (emulating all of it's quirks).