Updating ddoc to support modern HTML tags

[Kagamin via Digitalmars-d]

On Monday, 20 April 2015 at 19:42:43 UTC, Gary Willoughby wrote:
> I've just done a little bit of work on the ddoc documentation 
> and it was brought to my attention that the HTML output of ddoc 
> is actually quite old. Some of the current tags are deprecated. 
> I've raised this as an issue here:
>
> https://issues.dlang.org/show_bug.cgi?id=14473

More importantly, ddoc need semantic-oriented markup tags, see 
https://issues.dlang.org/show_bug.cgi?id=2060
RED? Why RED? What if a site visual style is black and white, 
still RED?