“Alper YAZAR and CONTRIBUTORS” hold copyright on all materials. But don’t panic. All contributors have agreed upon CC-BY-SA-4.0 license. Of course, you are free to read all pages. If you follow License conditions, you are also free to share and adapt. You don’t need to request permission from contributors if you follow license rules. Questions? then Contact.
Each contributor holds copyright on his/her contribution. Git commit history shows which part belongs to which contributor.
Some of contributors are listed on Contributors page.