We've known for quite some time that Ryan Petrich is probably one of the hardest working and most productive developers in the jailbreak community, but if we need further proof regarding that notion; a wave of tweaks were released in Cydia bearing his name. Although a lot of the developer’s packages often land on his own private repository for testing purposes, a number of them were pushed out to the main repo for everyone to take advantage of. One of the simplest releases, but one that a lot of users may find useful is the UpsideDown package that pretty does exactly what the name suggests.
