Dear Prof. Dr. Garcke, Dear Tutors/Arno, due to unfamiliarity with GitHub, I think our team repeatedly mistakenly merged directly with the master branch instead of creating pull requests; I hope we were supposed to merge after all. Also, the latest commit fixed some code-breaking problem with the contour plot earlier, so I hope it's visible despite being past the deadline, unfortunately! Thank you very much! Best regards, Jason Hu/Izdar Abulizi, Team Sequoia