title: Swift 3.0 convert Data to Array<UInt8>
body: <p>How to convert Data to array of UInt8?</p>
  
  <pre><code>func serialPort(_ serialPort: ORSSerialPort, didReceive data: Data) {
  print("recieved:\(data)")
  let arr: [UInt8] = Data(???)???
  }
  </code></pre>
  
  <p>log
  recieved:70 bytes</p>