Four new DConf 2015 videos

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On Wednesday, 8 July 2015 at 16:26:31 UTC, QAston wrote:
> Looks like you've destroyed C++ concepts with this talk.

It's kind of unfortunate for C++ because D has the benefit of 
hindsight. Ranges instead of iterators, DbI instead of 
Concepts/Generic Programming, static if/version/templates instead 
of the preprocessor, modules instead of textual #include... the 
list goes on.