Update to Mandatory Assigment 1

Hi IN3050/4050-students!

After hearing some of you had trouble using the map-plotting library in mandatory assignment 1, I updated the exercise so it no longer uses this library. Head over to the Mandatory Exercises page to find the updated version.

Note: The change only affects the plotting of optimized plans. If you have already started the exercise, and did not have any problems with the plotting, feel free to use the old version. If you have already started but want the new plotting code, you can also just copy over the first few cells from the updated notebook and remove the old plotting code from your file.

-Kai