Autotesting dub packages with dmd nightly

[Sebastiaan Koppe via Digitalmars-d-announce]

Just to let you guys know - and to be sure no one is doing the 
same - I decided to go ahead and *start* writing an autotester 
that will fetch dmd nightly and unittest each dub package.

It will be using a classic master-worker architecture and will 
leverage docker containers.

I am aiming really low at first, but will eventually add things 
like memory usage, history, notifications, etc.