Dlings first release

[João Lourenço]

I started working on this project a while ago. It all began with 
a discussion between me and a coworker. From time to time I 
announce D at work. I also tried to push some of my coworkers to 
try it, but haven't had much success, perhaps I'm just a terrible 
salesman. One of them seems to understand the appeal of the 
language, however, doesn't have a reason to start messing with 
it. So, in one of my recent discussions with him I asked "If D 
had a similar project to Rustlings [1] would you give it a try?", 
and the answer was yes because although he is curious about the 
language, he thinks he needs a reason to start messing around 
with it. Randomly messing around is not his thing, and using it 
in a project could feel counter-productive because of the time 
spent learning the language instead of actively working on it. A 
project similar to Rustlings would, on the other hand, be quick 
enough to get going. Just start solving simple exercises to get a 
feel of the language and what the features are. He could stop at 
any time and come back whenever he feels like to keep progressing 
without feeling forced to do it.

So, I started working on Dlings [2]. My approach was to have it 
as close as possible to Rustlings. They created a working recipe, 
why not just follow it? So, right now, this is a clone of 
Rustlings. There are a bunch of things that need to be polished, 
but I felt it was good enough to release it and start adding 
exercises.

This is where I would like the community to come in. There are a 
lot of experienced people in the D community, more knowledgeable 
than I, more creative, and with experience in education. I would 
like, if anyone is interested, to ask you to give your opinions 
of how the exercises should be structured, the topics to teach, 
how could they look, etc. Contributors in general would be great! 
There is another project - dingbats [3] - from monkeyyy, that has 
some topics and ideas laid out if you want to check it out.

[1] https://github.com/rust-lang/rustlings
[2] https://github.com/iK4tsu/dlings
[3] https://github.com/crazymonkyyy/dingbats