GoPro, the action camera that has become hugely popular, is making big changes to its iOS app. Starting today, the app is called Quik, and gives GoPro, iPhone, Android and DSLR users access to editing tools, filters and music. Another feature creates Murals and shows off highlights from past videos. According to Quik, you'll never lose track of your photos and videos again since those that you want to keep can be shared with the Quik app where they will be kept in the "Mural" feed. You can select images that are already on your camera roll. And if you choose to save to Quik multiple images ...