Speed up `dub`.

[rcorre via Digitalmars-d-learn]

On Monday, 7 March 2016 at 22:47:13 UTC, Luis wrote:

>
> I try to grab dstep with dub fetch step (dub version 0.9.24, 
> built on Aug 19 2015, on Ubuntu), and try to run dub build 
> step. I can confirm that on my machine takes around 5 seconds 
> to check if the dependencies are update.

I had this same experience. Thought dub would be a convenient way 
to install dstep, but dub run took so long I ended up just 
creating an alias to run the binary directly.