Assignment 3 changes

The deadline for assignment 3 has been changed to 25th October, but I urge you all to try to deliver earlier. It is important that you start your group project early to be able to finish it, as it's considerably more difficult than the assignments. 

Note that we've found some errors in the skeleton for assignment 3. A student  found and fixed this himself, but we have now updated the skeleton project to include these fixes. See the assignment description for more information.