Amazon announced yesterday that its Kindle app for iOS had been updated to provide “more accessibility.” In fact, the update (with the inauspicious version number, 3.7) turns a largely inaccessible app into one that VoiceOver screen reader users can rely upon to read, navigate, and manage the contents of a Kindle library. And they did a great job, not merely making the app usable, but opening all Kindle iOS features up to VO. The fact…