Initially, there was only a female narrator (voice) reading an ebook. Lately, though another book, there are both female and male voices that alternate. Can one or the other be selected specifically? I read that other user(s) have requested “bookmarks” or the ability to begin anywhere by selecting text. These are features other like-apps have so I know they are can do’s. Some of these requests are from months ago. Curious, how long does it take to enhance the app. How often are there version updates? Thanks.