Podcast streaming service Stitcher has released major update of its iOS app, v6.0.0. The app’s interface has been redesigned not only to match iOS 7, but to streamline navigation. The front page, for example, now highlights new episodes from favorites, as well as headlines and other news stories. A new Mini Player provides constant access to what’s playing, and the Now Playing screen has gained quick access to car mode and the sleep timer. Playlists can be accessed from anywhere in the app via a swipe gesture….