You can find out more about Stumpy by clicking the first link in this post to read the initial write up on Mutaku, or you can go to the project page on Github.
This release includes a few small bug fixes as well as incorporating a new feature that, for logged in users, shows all of their submitted URLS at the bottom of the main page. Previously, this was only viewable by going through the admin interface. If you are not logged in, you will see the traditional view with the 5 most recent and 5 most visited URLs.
You get get the newest release at the Github page here: v1.4.3