title: UITextView does not respect the secureTextEntry property
body: <p>I'm trying to get a UITextView (<strong>NOT</strong> a UITextField) to act as a password field where the text is obfuscated as you type into it.  However, setting this property to YES on a UITextView seems to have no effect and the letters are always visible instead of only being visible if it's the last letter typed and a dot otherwise.  Has anyone else run into this and know why this happens or what a possible workaround may be?  If necessary I can use a UITextField in the instances that I specifically need password behavior but that would not be as clean as just using UITextView only.  Thanks!</p>