When writing ruby code, I always enjoyed having my tests run side-by-side as I wrote code. I used a variety of combinations through the years, starting with the watchr gem, and eventually moving to guard. In julia, the language doesn't have as many tools available due to the infancy of it's package ecosystem. However, I combined a few tools to allow me to save my changes and see my test results immediately in a terminal window.
Remove 'category' Prefix from WordPress
One of the most pesky things I find about the WordPress installation is that for category pages, WordPress adds the 'category' prefix to URLs. Sure you can live with the behavior (like here on Octopress) but for real-world installs, it looks kind of sloppy and unexpected. I originally came up with this technique in 2007, and after looking at the "new and improved" ways of today, I couldn't find any better options.