This project was my first official Rails app, which I started in 2013 under the mentorship of Christoph Witzany. It was built to be a little more advanced than the typical “TODO MVC” app–providing the user with the ability to form fully customizable lists. Over the years, I have returned many times to this app. I have found it useful when I was first practicing test-driven development (TDD), when I wanted to experiment with es6 on a working Rails app, when I was learning how to configure my work app for continuous integration, and when I wanted to work through some of the pain points of upgrading Rails itself on a smaller application than my employer’s.