Low-overhead components

[Jonathan A Dunlap]

> Fixed, thanks. I wasn't sure if the post was ready for Reddit, 
> as it's mainly some thoughts written down for advanced D users.

Thanks for writing this. Aside from the primary purpose of the 
article, I was able to learn along the way more about D's mixins 
because of it.

As a game architect, I love discovering ways to further abstract, 
reuse, improve speed, and aid readability... all stuff that 
mixins can help with. ;)