Graded Homework 3

**Grade: 4.5/5**

Excellent work, Josh! Not many comments other than the ones under `files changed`.

Once you've read the comments (both on the PR and under files changed), make a comment to the pull request or send me/Diana an email, letting us know that you've checked them out. Afterwards, close the PR (and optionally delete the graded branch)

#### REMEMBER NOT TO MERGE THESE PRs!