Version 2.2.1

Version 2.2.1 - version 2.2.3 (no code changes).

• Added support for supportedScanType in Html5QrcodeScanner. This feature
  was implemented by our latest contributor - mohsinaav@

  Now users can decide to only use camera based scan or file based scan or use
  them in different order. How to use:

   function onScanSuccess(decodedText, decodedResult) {
       // handle the scanned code as you like, for example:
       console.log(`Code matched = ${decodedText}`, decodedResult);
   }
  
   let config = {
       fps: 10,
       qrbox: {width: 100, height: 100},
       rememberLastUsedCamera: true,
       // Only support camera scan type.
       supportedScanTypes: [Html5QrcodeScanType.SCAN_TYPE_CAMERA]
   };
  
   let html5QrcodeScanner = new Html5QrcodeScanner(
       "reader", config, /* verbose= */ false);
   html5QrcodeScanner.render(onScanSuccess);

  For file based scan only choose:

  supportedScanTypes: [Html5QrcodeScanType.SCAN_TYPE_FILE]

  For supporting both as it is today, you can ignore this field or set as:

  supportedScanTypes: [
      Html5QrcodeScanType.SCAN_TYPE_CAMERA,
       Html5QrcodeScanType.SCAN_TYPE_FILE]

  To set the file based scan as defult change the order:

     supportedScanTypes: [
       Html5QrcodeScanType.SCAN_TYPE_FILE,
       Html5QrcodeScanType.SCAN_TYPE_CAMERA]