Further progress on the CS assignment

Today I hammered out the backbone of a reference solution the CS programming assignment I've been assigned to write. I also fleshed out the test cases (grading sections) that I've written so far. Of course, my solution so far passes the tests so far. The tests so far are still fairly easy to pass relative to when the assignment will be released in the course, but I have a functioning assignment. Fortunately, there's plenty of time to keep working on the interesting parts.