I am trying to find a way to observe iOS tag scanning sheet is dismissed. My understanding it is happened when readerSession is invalidated. In version 2.1.2 variable readerSession is private. I haven't found a way to check if it is nil. So can you add a delegate call on line 152 in file PassportReader.swift on next version? Please correct me if my understanding is incorrect. Or is it ok that I send a PR for this?