Started homework for week 2. Completed exercise 1.
Implemented week 2 exercise 2.
Implemented week 2 exercise 3.
Finished week 2 exercise 4, including some fixing and refactoring of previous answers.
Added solution for week 2 exercise 5.
Finished week 2 exercise 6
Finished week 2 exercise 6.
First stab at week 2 exercise 7. Slow implementation.