Just in a couple of days I found a lot of awesome GitHub features. Projects were one.
Tasks are another one. They are added to issues and appear on the issue overview like this:
And a third (and maybe the greatest one) is the Travis integration:
Not only does the issue show all its commits, it shows which commits broke the build (and after which the build still worked). Awesome for debugging! I love it. ❤
The last two features can be viewed on issue #5, if you are interested.