Release D 2.078.0

[Joakim]

On Thursday, 4 January 2018 at 13:03:21 UTC, Mike Parker wrote:
> On Thursday, 4 January 2018 at 02:27:13 UTC, Mike Parker wrote:
>
>>
>> Awesome! I'll post the blog announcement and hit social media 
>> in ~12 hours.
>
> Blog:
> https://dlang.org/blog/2018/01/04/dmd-2-078-0-has-been-released/
>
> Reddit:
> https://www.reddit.com/r/programming/comments/7o2tcw/dmd_20780_has_been_released/

Nice post, good explanations and code samples.  Here's some 
phrases I'd change:

quality of life -> quality-of-life
stubbed out -> stubbed-out
line, or an alternative -> line or an alternate D runtime
dependent -> that depends
DMD 2.80.0 -> DMD 2.080.0