On March 14, 2011, I released the first version of the jQuery Konami Code as part of a project that I was finishing up. The project itself is no longer active; however, the jQuery Konami Code has been sitting in GitHub ever since.
Earlier this week, I merged the first pull request that the plugin has received (thanks to Stephen Hill!) which introduced a number of improvements.
Next, I spent some time cleaning up the demo code, cleaning up the actual project directory, and making a few other improvements with the help of JSLint.