title: iOS - AVSpeechSynthesizer pause and continueSpeaking issue
body: <blockquote>
  <p>macOS: Mojave 10.14.4 beta</p>
  <p>iOS: 12.2 beta</p>
  <p>Xcode: 10.2 beta</p>
  </blockquote>
  <p>I was using <code>AVSpeechSynthesizer</code> but below code does not resuming from where it paused.</p>
  <pre><code>// The pause functionality works fine
  if (synth.isSpeaking) {
     synth.pauseSpeaking(at: AVSpeechBoundary.word)
  }
  
  
  // But continueSpeaking always starting from the beginning.
  if (synth.isPaused) {
     synth.continueSpeaking();
  }
  </code></pre>
  <p>How can I continue from where I left? Anything I'm missing?</p>