We have all the classic components for a wedding: something old (Core Image), something new (PhotoKit), something borrowed (GPUImage), and something blue (color modification filters), and now our Twitter client can tweet a photo! But we have just scratched the surface of what you can do with these technologies. We hope you will continue to explore the possibilities with these deep and comprehensive frameworks.
One functionality we haven’t gone over yet is how to turn your photo-editing application into an extension. We will be tackling the new iOS 8 extensions in the next chapter.