diff --git a/.eslintignore b/.eslintignore
index d7db50c..c38cba7 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,5 +1,4 @@
 /build/
 /coverage/
 /dist/
-/vendor/
 /node_modules/
diff --git a/.eslintrc b/.eslintrc
index e14a66b..d157a01 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -5,6 +5,9 @@
     es6: true
     node: true
 
+  parserOptions:
+    ecmaVersion: 2019
+
   rules:
     array-bracket-spacing: [2, never]
     arrow-parens: [2, as-needed]
diff --git a/dist/jquery-qrcode.js b/dist/jquery-qrcode.js
index 0236e41..a2b7add 100644
--- a/dist/jquery-qrcode.js
+++ b/dist/jquery-qrcode.js
@@ -1,4 +1,4 @@
-/*! jquery-qrcode v0.16.0 - https://larsjung.de/jquery-qrcode/ */
+/*! jquery-qrcode v0.17.0 - https://larsjung.de/jquery-qrcode/ */
 (function webpackUniversalModuleDefinition(root, factory) {
 	if(typeof exports === 'object' && typeof module === 'object')
 		module.exports = factory();
@@ -99,10 +99,7 @@ return /******/ (function(modules) { // webpackBootstrap
 /* 0 */
 /***/ (function(module, exports, __webpack_require__) {
 
-var VQRCODE = __webpack_require__(1);
-
-var WIN = window; // eslint-disable-line no-undef
-
+/* WEBPACK VAR INJECTION */(function(global) {var WIN = global.window;
 var JQ = WIN.jQuery; // Check if canvas is available in the browser (as Modernizr does)
 
 var HAS_CANVAS = function () {
@@ -117,7 +114,11 @@ var is_img_el = function is_img_el(x) {
 
 var create_qrcode = function create_qrcode(text, level, version, quiet) {
   var qr = {};
-  var vqr = VQRCODE(version, level);
+
+  var qr_gen = __webpack_require__(2);
+
+  qr_gen.stringToBytes = qr_gen.stringToBytesFuncs['UTF-8'];
+  var vqr = qr_gen(version, level);
   vqr.addData(text);
   vqr.make();
   quiet = quiet || 0;
@@ -512,12 +513,39 @@ JQ.fn.qrcode = module.exports = function main(options) {
     }
   });
 };
+/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(1)))
 
 /***/ }),
 /* 1 */
 /***/ (function(module, exports) {
 
-//---------------------------------------------------------------------
+var g;
+
+// This works in non-strict mode
+g = (function() {
+	return this;
+})();
+
+try {
+	// This works if eval is allowed (see CSP)
+	g = g || new Function("return this")();
+} catch (e) {
+	// This works if the window reference is available
+	if (typeof window === "object") g = window;
+}
+
+// g can still be undefined, but nothing to do about it...
+// We return undefined, instead of nothing here, so it's
+// easier to handle this case. if(!global) { ...}
+
+module.exports = g;
+
+
+/***/ }),
+/* 2 */
+/***/ (function(module, exports, __webpack_require__) {
+
+var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;//---------------------------------------------------------------------
 //
 // QR Code Generator for JavaScript
 //
@@ -543,19 +571,19 @@ var qrcode = function() {
   /**
    * qrcode
    * @param typeNumber 1 to 40
-   * @param errorCorrectLevel 'L','M','Q','H'
+   * @param errorCorrectionLevel 'L','M','Q','H'
    */
-  var qrcode = function(typeNumber, errorCorrectLevel) {
+  var qrcode = function(typeNumber, errorCorrectionLevel) {
 
     var PAD0 = 0xEC;
     var PAD1 = 0x11;
 
     var _typeNumber = typeNumber;
-    var _errorCorrectLevel = QRErrorCorrectLevel[errorCorrectLevel];
+    var _errorCorrectionLevel = QRErrorCorrectionLevel[errorCorrectionLevel];
     var _modules = null;
     var _moduleCount = 0;
     var _dataCache = null;
-    var _dataList = new Array();
+    var _dataList = [];
 
     var _this = {};
 
@@ -585,7 +613,7 @@ var qrcode = function() {
       }
 
       if (_dataCache == null) {
-        _dataCache = createData(_typeNumber, _errorCorrectLevel, _dataList);
+        _dataCache = createData(_typeNumber, _errorCorrectionLevel, _dataList);
       }
 
       mapData(_dataCache, maskPattern);
@@ -697,7 +725,7 @@ var qrcode = function() {
 
     var setupTypeInfo = function(test, maskPattern) {
 
-      var data = (_errorCorrectLevel << 3) | maskPattern;
+      var data = (_errorCorrectionLevel << 3) | maskPattern;
       var bits = QRUtil.getBCHTypeInfo(data);
 
       // vertical
@@ -848,9 +876,9 @@ var qrcode = function() {
       return data;
     };
 
-    var createData = function(typeNumber, errorCorrectLevel, dataList) {
+    var createData = function(typeNumber, errorCorrectionLevel, dataList) {
 
-      var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
+      var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectionLevel);
 
       var buffer = qrBitBuffer();
 
@@ -868,11 +896,11 @@ var qrcode = function() {
       }
 
       if (buffer.getLengthInBits() > totalDataCount * 8) {
-        throw new Error('code length overflow. ('
+        throw 'code length overflow. ('
           + buffer.getLengthInBits()
           + '>'
           + totalDataCount * 8
-          + ')');
+          + ')';
       }
 
       // end code
@@ -902,15 +930,36 @@ var qrcode = function() {
       return createBytes(buffer, rsBlocks);
     };
 
-    _this.addData = function(data) {
-      var newData = qr8BitByte(data);
+    _this.addData = function(data, mode) {
+
+      mode = mode || 'Byte';
+
+      var newData = null;
+
+      switch(mode) {
+      case 'Numeric' :
+        newData = qrNumber(data);
+        break;
+      case 'Alphanumeric' :
+        newData = qrAlphaNum(data);
+        break;
+      case 'Byte' :
+        newData = qr8BitByte(data);
+        break;
+      case 'Kanji' :
+        newData = qrKanji(data);
+        break;
+      default :
+        throw 'mode:' + mode;
+      }
+
       _dataList.push(newData);
       _dataCache = null;
     };
 
     _this.isDark = function(row, col) {
       if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) {
-        throw new Error(row + ',' + col);
+        throw row + ',' + col;
       }
       return _modules[row][col];
     };
@@ -920,6 +969,33 @@ var qrcode = function() {
     };
 
     _this.make = function() {
+      if (_typeNumber < 1) {
+        var typeNumber = 1;
+
+        for (; typeNumber < 40; typeNumber++) {
+          var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, _errorCorrectionLevel);
+          var buffer = qrBitBuffer();
+
+          for (var i = 0; i < _dataList.length; i++) {
+            var data = _dataList[i];
+            buffer.put(data.getMode(), 4);
+            buffer.put(data.getLength(), QRUtil.getLengthInBits(data.getMode(), typeNumber) );
+            data.write(buffer);
+          }
+
+          var totalDataCount = 0;
+          for (var i = 0; i < rsBlocks.length; i++) {
+            totalDataCount += rsBlocks[i].dataCount;
+          }
+
+          if (buffer.getLengthInBits() <= totalDataCount * 8) {
+            break;
+          }
+        }
+
+        _typeNumber = typeNumber;
+      }
+
       makeImpl(false, getBestMaskPattern() );
     };
 
@@ -963,7 +1039,49 @@ var qrcode = function() {
       return qrHtml;
     };
 
-    _this.createImgTag = function(cellSize, margin) {
+    _this.createSvgTag = function(cellSize, margin) {
+
+      var opts = {};
+      if (typeof arguments[0] == 'object') {
+        // Called by options.
+        opts = arguments[0];
+        // overwrite cellSize and margin.
+        cellSize = opts.cellSize;
+        margin = opts.margin;
+      }
+
+      cellSize = cellSize || 2;
+      margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
+      var size = _this.getModuleCount() * cellSize + margin * 2;
+      var c, mc, r, mr, qrSvg='', rect;
+
+      rect = 'l' + cellSize + ',0 0,' + cellSize +
+        ' -' + cellSize + ',0 0,-' + cellSize + 'z ';
+
+      qrSvg += '<svg version="1.1" xmlns="http://www.w3.org/2000/svg"';
+      qrSvg += !opts.scalable ? ' width="' + size + 'px" height="' + size + 'px"' : '';
+      qrSvg += ' viewBox="0 0 ' + size + ' ' + size + '" ';
+      qrSvg += ' preserveAspectRatio="xMinYMin meet">';
+      qrSvg += '<rect width="100%" height="100%" fill="white" cx="0" cy="0"/>';
+      qrSvg += '<path d="';
+
+      for (r = 0; r < _this.getModuleCount(); r += 1) {
+        mr = r * cellSize + margin;
+        for (c = 0; c < _this.getModuleCount(); c += 1) {
+          if (_this.isDark(r, c) ) {
+            mc = c*cellSize+margin;
+            qrSvg += 'M' + mc + ',' + mr + rect;
+          }
+        }
+      }
+
+      qrSvg += '" stroke="transparent" fill="black"/>';
+      qrSvg += '</svg>';
+
+      return qrSvg;
+    };
+
+    _this.createDataURL = function(cellSize, margin) {
 
       cellSize = cellSize || 2;
       margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
@@ -972,7 +1090,7 @@ var qrcode = function() {
       var min = margin;
       var max = size - margin;
 
-      return createImgTag(size, size, function(x, y) {
+      return createDataURL(size, size, function(x, y) {
         if (min <= x && x < max && min <= y && y < max) {
           var c = Math.floor( (x - min) / cellSize);
           var r = Math.floor( (y - min) / cellSize);
@@ -983,6 +1101,144 @@ var qrcode = function() {
       } );
     };
 
+    _this.createImgTag = function(cellSize, margin, alt) {
+
+      cellSize = cellSize || 2;
+      margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
+
+      var size = _this.getModuleCount() * cellSize + margin * 2;
+
+      var img = '';
+      img += '<img';
+      img += '\u0020src="';
+      img += _this.createDataURL(cellSize, margin);
+      img += '"';
+      img += '\u0020width="';
+      img += size;
+      img += '"';
+      img += '\u0020height="';
+      img += size;
+      img += '"';
+      if (alt) {
+        img += '\u0020alt="';
+        img += alt;
+        img += '"';
+      }
+      img += '/>';
+
+      return img;
+    };
+
+    var _createHalfASCII = function(margin) {
+      var cellSize = 1;
+      margin = (typeof margin == 'undefined')? cellSize * 2 : margin;
+
+      var size = _this.getModuleCount() * cellSize + margin * 2;
+      var min = margin;
+      var max = size - margin;
+
+      var y, x, r1, r2, p;
+
+      var blocks = {
+        '██': '█',
+        '█ ': '▀',
+        ' █': '▄',
+        '  ': ' '
+      };
+
+      var blocksLastLineNoMargin = {
+        '██': '▀',
+        '█ ': '▀',
+        ' █': ' ',
+        '  ': ' '
+      };
+
+      var ascii = '';
+      for (y = 0; y < size; y += 2) {
+        r1 = Math.floor((y - min) / cellSize);
+        r2 = Math.floor((y + 1 - min) / cellSize);
+        for (x = 0; x < size; x += 1) {
+          p = '█';
+
+          if (min <= x && x < max && min <= y && y < max && _this.isDark(r1, Math.floor((x - min) / cellSize))) {
+            p = ' ';
+          }
+
+          if (min <= x && x < max && min <= y+1 && y+1 < max && _this.isDark(r2, Math.floor((x - min) / cellSize))) {
+            p += ' ';
+          }
+          else {
+            p += '█';
+          }
+
+          // Output 2 characters per pixel, to create full square. 1 character per pixels gives only half width of square.
+          ascii += (margin < 1 && y+1 >= max) ? blocksLastLineNoMargin[p] : blocks[p];
+        }
+
+        ascii += '\n';
+      }
+
+      if (size % 2 && margin > 0) {
+        return ascii.substring(0, ascii.length - size - 1) + Array(size+1).join('▀');
+      }
+
+      return ascii.substring(0, ascii.length-1);
+    };
+
+    _this.createASCII = function(cellSize, margin) {
+      cellSize = cellSize || 1;
+
+      if (cellSize < 2) {
+        return _createHalfASCII(margin);
+      }
+
+      cellSize -= 1;
+      margin = (typeof margin == 'undefined')? cellSize * 2 : margin;
+
+      var size = _this.getModuleCount() * cellSize + margin * 2;
+      var min = margin;
+      var max = size - margin;
+
+      var y, x, r, p;
+
+      var white = Array(cellSize+1).join('██');
+      var black = Array(cellSize+1).join('  ');
+
+      var ascii = '';
+      var line = '';
+      for (y = 0; y < size; y += 1) {
+        r = Math.floor( (y - min) / cellSize);
+        line = '';
+        for (x = 0; x < size; x += 1) {
+          p = 1;
+
+          if (min <= x && x < max && min <= y && y < max && _this.isDark(r, Math.floor((x - min) / cellSize))) {
+            p = 0;
+          }
+
+          // Output 2 characters per pixel, to create full square. 1 character per pixels gives only half width of square.
+          line += p ? white : black;
+        }
+
+        for (r = 0; r < cellSize; r += 1) {
+          ascii += line + '\n';
+        }
+      }
+
+      return ascii.substring(0, ascii.length-1);
+    };
+
+    _this.renderTo2dContext = function(context, cellSize) {
+      cellSize = cellSize || 2;
+      var length = _this.getModuleCount();
+      for (var row = 0; row < length; row++) {
+        for (var col = 0; col < length; col++) {
+          context.fillStyle = _this.isDark(row, col) ? 'black' : 'white';
+          context.fillRect(row * cellSize, col * cellSize, cellSize, cellSize);
+        }
+      }
+    }
+
     return _this;
   };
 
@@ -990,15 +1246,19 @@ var qrcode = function() {
   // qrcode.stringToBytes
   //---------------------------------------------------------------------
 
-  qrcode.stringToBytes = function(s) {
-    var bytes = new Array();
-    for (var i = 0; i < s.length; i += 1) {
-      var c = s.charCodeAt(i);
-      bytes.push(c & 0xff);
+  qrcode.stringToBytesFuncs = {
+    'default' : function(s) {
+      var bytes = [];
+      for (var i = 0; i < s.length; i += 1) {
+        var c = s.charCodeAt(i);
+        bytes.push(c & 0xff);
+      }
+      return bytes;
     }
-    return bytes;
   };
 
+  qrcode.stringToBytes = qrcode.stringToBytesFuncs['default'];
+
   //---------------------------------------------------------------------
   // qrcode.createStringToBytes
   //---------------------------------------------------------------------
@@ -1017,7 +1277,7 @@ var qrcode = function() {
       var bin = base64DecodeInputStream(unicodeData);
       var read = function() {
         var b = bin.read();
-        if (b == -1) throw new Error();
+        if (b == -1) throw 'eof';
         return b;
       };
 
@@ -1035,7 +1295,7 @@ var qrcode = function() {
         count += 1;
       }
       if (count != numChars) {
-        throw new Error(count + ' != ' + numChars);
+        throw count + ' != ' + numChars;
       }
 
       return unicodeMap;
@@ -1044,7 +1304,7 @@ var qrcode = function() {
     var unknownChar = '?'.charCodeAt(0);
 
     return function(s) {
-      var bytes = new Array();
+      var bytes = [];
       for (var i = 0; i < s.length; i += 1) {
         var c = s.charCodeAt(i);
         if (c < 128) {
@@ -1081,10 +1341,10 @@ var qrcode = function() {
   };
 
   //---------------------------------------------------------------------
-  // QRErrorCorrectLevel
+  // QRErrorCorrectionLevel
   //---------------------------------------------------------------------
 
-  var QRErrorCorrectLevel = {
+  var QRErrorCorrectionLevel = {
     L : 1,
     M : 0,
     Q : 3,
@@ -1211,7 +1471,7 @@ var qrcode = function() {
         return function(i, j) { return ( (i * j) % 3 + (i + j) % 2) % 2 == 0; };
 
       default :
-        throw new Error('bad maskPattern:' + maskPattern);
+        throw 'bad maskPattern:' + maskPattern;
       }
     };
 
@@ -1235,7 +1495,7 @@ var qrcode = function() {
         case QRMode.MODE_8BIT_BYTE : return 8;
         case QRMode.MODE_KANJI     : return 8;
         default :
-          throw new Error('mode:' + mode);
+          throw 'mode:' + mode;
         }
 
       } else if (type < 27) {
@@ -1248,7 +1508,7 @@ var qrcode = function() {
         case QRMode.MODE_8BIT_BYTE : return 16;
         case QRMode.MODE_KANJI     : return 10;
         default :
-          throw new Error('mode:' + mode);
+          throw 'mode:' + mode;
         }
 
       } else if (type < 41) {
@@ -1261,11 +1521,11 @@ var qrcode = function() {
         case QRMode.MODE_8BIT_BYTE : return 16;
         case QRMode.MODE_KANJI     : return 12;
         default :
-          throw new Error('mode:' + mode);
+          throw 'mode:' + mode;
         }
 
       } else {
-        throw new Error('type:' + type);
+        throw 'type:' + type;
       }
     };
 
@@ -1405,7 +1665,7 @@ var qrcode = function() {
     _this.glog = function(n) {
 
       if (n < 1) {
-        throw new Error('glog(' + n + ')');
+        throw 'glog(' + n + ')';
       }
 
       return LOG_TABLE[n];
@@ -1434,7 +1694,7 @@ var qrcode = function() {
   function qrPolynomial(num, shift) {
 
     if (typeof num.length == 'undefined') {
-      throw new Error(num.length + '/' + shift);
+      throw num.length + '/' + shift;
     }
 
     var _num = function() {
@@ -1759,34 +2019,34 @@ var qrcode = function() {
 
     var _this = {};
 
-    var getRsBlockTable = function(typeNumber, errorCorrectLevel) {
+    var getRsBlockTable = function(typeNumber, errorCorrectionLevel) {
 
-      switch(errorCorrectLevel) {
-      case QRErrorCorrectLevel.L :
+      switch(errorCorrectionLevel) {
+      case QRErrorCorrectionLevel.L :
         return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
-      case QRErrorCorrectLevel.M :
+      case QRErrorCorrectionLevel.M :
         return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
-      case QRErrorCorrectLevel.Q :
+      case QRErrorCorrectionLevel.Q :
         return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
-      case QRErrorCorrectLevel.H :
+      case QRErrorCorrectionLevel.H :
         return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
       default :
         return undefined;
       }
     };
 
-    _this.getRSBlocks = function(typeNumber, errorCorrectLevel) {
+    _this.getRSBlocks = function(typeNumber, errorCorrectionLevel) {
 
-      var rsBlock = getRsBlockTable(typeNumber, errorCorrectLevel);
+      var rsBlock = getRsBlockTable(typeNumber, errorCorrectionLevel);
 
       if (typeof rsBlock == 'undefined') {
-        throw new Error('bad rs block @ typeNumber:' + typeNumber +
-            '/errorCorrectLevel:' + errorCorrectLevel);
+        throw 'bad rs block @ typeNumber:' + typeNumber +
+            '/errorCorrectionLevel:' + errorCorrectionLevel;
       }
 
       var length = rsBlock.length / 3;
 
-      var list = new Array();
+      var list = [];
 
       for (var i = 0; i < length; i += 1) {
 
@@ -1811,7 +2071,7 @@ var qrcode = function() {
 
   var qrBitBuffer = function() {
 
-    var _buffer = new Array();
+    var _buffer = [];
     var _length = 0;
 
     var _this = {};
@@ -1852,6 +2112,126 @@ var qrcode = function() {
     return _this;
   };
 
+  //---------------------------------------------------------------------
+  // qrNumber
+  //---------------------------------------------------------------------
+
+  var qrNumber = function(data) {
+
+    var _mode = QRMode.MODE_NUMBER;
+    var _data = data;
+
+    var _this = {};
+
+    _this.getMode = function() {
+      return _mode;
+    };
+
+    _this.getLength = function(buffer) {
+      return _data.length;
+    };
+
+    _this.write = function(buffer) {
+
+      var data = _data;
+
+      var i = 0;
+
+      while (i + 2 < data.length) {
+        buffer.put(strToNum(data.substring(i, i + 3) ), 10);
+        i += 3;
+      }
+
+      if (i < data.length) {
+        if (data.length - i == 1) {
+          buffer.put(strToNum(data.substring(i, i + 1) ), 4);
+        } else if (data.length - i == 2) {
+          buffer.put(strToNum(data.substring(i, i + 2) ), 7);
+        }
+      }
+    };
+
+    var strToNum = function(s) {
+      var num = 0;
+      for (var i = 0; i < s.length; i += 1) {
+        num = num * 10 + chatToNum(s.charAt(i) );
+      }
+      return num;
+    };
+
+    var chatToNum = function(c) {
+      if ('0' <= c && c <= '9') {
+        return c.charCodeAt(0) - '0'.charCodeAt(0);
+      }
+      throw 'illegal char :' + c;
+    };
+
+    return _this;
+  };
+
+  //---------------------------------------------------------------------
+  // qrAlphaNum
+  //---------------------------------------------------------------------
+
+  var qrAlphaNum = function(data) {
+
+    var _mode = QRMode.MODE_ALPHA_NUM;
+    var _data = data;
+
+    var _this = {};
+
+    _this.getMode = function() {
+      return _mode;
+    };
+
+    _this.getLength = function(buffer) {
+      return _data.length;
+    };
+
+    _this.write = function(buffer) {
+
+      var s = _data;
+
+      var i = 0;
+
+      while (i + 1 < s.length) {
+        buffer.put(
+          getCode(s.charAt(i) ) * 45 +
+          getCode(s.charAt(i + 1) ), 11);
+        i += 2;
+      }
+
+      if (i < s.length) {
+        buffer.put(getCode(s.charAt(i) ), 6);
+      }
+    };
+
+    var getCode = function(c) {
+
+      if ('0' <= c && c <= '9') {
+        return c.charCodeAt(0) - '0'.charCodeAt(0);
+      } else if ('A' <= c && c <= 'Z') {
+        return c.charCodeAt(0) - 'A'.charCodeAt(0) + 10;
+      } else {
+        switch (c) {
+        case ' ' : return 36;
+        case '$' : return 37;
+        case '%' : return 38;
+        case '*' : return 39;
+        case '+' : return 40;
+        case '-' : return 41;
+        case '.' : return 42;
+        case '/' : return 43;
+        case ':' : return 44;
+        default :
+          throw 'illegal char :' + c;
+        }
+      }
+    };
+
+    return _this;
+  };
+
   //---------------------------------------------------------------------
   // qr8BitByte
   //---------------------------------------------------------------------
@@ -1881,6 +2261,72 @@ var qrcode = function() {
     return _this;
   };
 
+  //---------------------------------------------------------------------
+  // qrKanji
+  //---------------------------------------------------------------------
+
+  var qrKanji = function(data) {
+
+    var _mode = QRMode.MODE_KANJI;
+    var _data = data;
+
+    var stringToBytes = qrcode.stringToBytesFuncs['SJIS'];
+    if (!stringToBytes) {
+      throw 'sjis not supported.';
+    }
+    !function(c, code) {
+      // self test for sjis support.
+      var test = stringToBytes(c);
+      if (test.length != 2 || ( (test[0] << 8) | test[1]) != code) {
+        throw 'sjis not supported.';
+      }
+    }('\u53cb', 0x9746);
+
+    var _bytes = stringToBytes(data);
+
+    var _this = {};
+
+    _this.getMode = function() {
+      return _mode;
+    };
+
+    _this.getLength = function(buffer) {
+      return ~~(_bytes.length / 2);
+    };
+
+    _this.write = function(buffer) {
+
+      var data = _bytes;
+
+      var i = 0;
+
+      while (i + 1 < data.length) {
+
+        var c = ( (0xff & data[i]) << 8) | (0xff & data[i + 1]);
+
+        if (0x8140 <= c && c <= 0x9FFC) {
+          c -= 0x8140;
+        } else if (0xE040 <= c && c <= 0xEBBF) {
+          c -= 0xC140;
+        } else {
+          throw 'illegal char at ' + (i + 1) + '/' + c;
+        }
+
+        c = ( (c >>> 8) & 0xff) * 0xC0 + (c & 0xff);
+
+        buffer.put(c, 13);
+
+        i += 2;
+      }
+
+      if (i < data.length) {
+        throw 'illegal char at ' + (i + 1);
+      }
+    };
+
+    return _this;
+  };
+
   //=====================================================================
   // GIF Support etc.
   //
@@ -1891,7 +2337,7 @@ var qrcode = function() {
 
   var byteArrayOutputStream = function() {
 
-    var _bytes = new Array();
+    var _bytes = [];
 
     var _this = {};
 
@@ -1969,7 +2415,7 @@ var qrcode = function() {
       } else if (n == 63) {
         return 0x2f;
       }
-      throw new Error('n:' + n);
+      throw 'n:' + n;
     };
 
     _this.writeByte = function(n) {
@@ -2029,7 +2475,7 @@ var qrcode = function() {
           if (_buflen == 0) {
             return -1;
           }
-          throw new Error('unexpected end of file./' + _buflen);
+          throw 'unexpected end of file./' + _buflen;
         }
 
         var c = _str.charAt(_pos);
@@ -2064,7 +2510,7 @@ var qrcode = function() {
       } else if (c == 0x2f) {
         return 63;
       } else {
-        throw new Error('c:' + c);
+        throw 'c:' + c;
       }
     };
 
@@ -2166,7 +2612,7 @@ var qrcode = function() {
       _this.write = function(data, length) {
 
         if ( (data >>> length) != 0) {
-          throw new Error('length over');
+          throw 'length over';
         }
 
         while (_bitLength + length >= 8) {
@@ -2261,7 +2707,7 @@ var qrcode = function() {
 
       _this.add = function(key) {
         if (_this.contains(key) ) {
-          throw new Error('dup key:' + key);
+          throw 'dup key:' + key;
         }
         _map[key] = _size;
         _size += 1;
@@ -2285,8 +2731,7 @@ var qrcode = function() {
     return _this;
   };
 
-  var createImgTag = function(width, height, getPixel, alt) {
-
+  var createDataURL = function(width, height, getPixel) {
     var gif = gifImage(width, height);
     for (var y = 0; y < height; y += 1) {
       for (var x = 0; x < width; x += 1) {
@@ -2304,26 +2749,7 @@ var qrcode = function() {
     }
     base64.flush();
 
-    var img = '';
-    img += '<img';
-    img += '\u0020src="';
-    img += 'data:image/gif;base64,';
-    img += base64;
-    img += '"';
-    img += '\u0020width="';
-    img += width;
-    img += '"';
-    img += '\u0020height="';
-    img += height;
-    img += '"';
-    if (alt) {
-      img += '\u0020alt="';
-      img += alt;
-      img += '"';
-    }
-    img += '/>';
-
-    return img;
+    return 'data:image/gif;base64,' + base64;
   };
 
   //---------------------------------------------------------------------
@@ -2332,39 +2758,10 @@ var qrcode = function() {
   return qrcode;
 }();
 
-(function (factory) {
-  if (typeof define === 'function' && define.amd) {
-      define([], factory);
-  } else if (typeof exports === 'object') {
-      module.exports = factory();
-  }
-}(function () {
-    return qrcode;
-}));
-//---------------------------------------------------------------------
-//
-// QR Code Generator for JavaScript UTF8 Support (optional)
-//
-// Copyright (c) 2011 Kazuhiko Arase
-//
-// URL: http://www.d-project.com/
-//
-// Licensed under the MIT license:
-//  http://www.opensource.org/licenses/mit-license.php
-//
-// The word 'QR Code' is registered trademark of
-// DENSO WAVE INCORPORATED
-//  http://www.denso-wave.com/qrcode/faqpatent-e.html
-//
-//---------------------------------------------------------------------
-
-!function(qrcode) {
+// multibyte support
+!function() {
 
-  //---------------------------------------------------------------------
-  // overwrite qrcode.stringToBytes
-  //---------------------------------------------------------------------
-
-  qrcode.stringToBytes = function(s) {
+  qrcode.stringToBytesFuncs['UTF-8'] = function(s) {
     // http://stackoverflow.com/questions/18729405/how-to-convert-utf8-string-to-byte-array
     function toUTF8Array(str) {
       var utf8 = [];
@@ -2399,7 +2796,18 @@ var qrcode = function() {
     return toUTF8Array(s);
   };
 
-}(qrcode);
+}();
+
+(function (factory) {
+  if (true) {
+      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
+				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
+				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
+				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
+  } else {}
+}(function () {
+    return qrcode;
+}));
 
 
 /***/ })
diff --git a/dist/jquery-qrcode.min.js b/dist/jquery-qrcode.min.js
index e1eb92a..7faf421 100644
--- a/dist/jquery-qrcode.min.js
+++ b/dist/jquery-qrcode.min.js
@@ -1,2 +1,2 @@
-/*! jquery-qrcode v0.16.0 - https://larsjung.de/jquery-qrcode/ */
-!function(r,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define("jquery-qrcode",[],t):"object"==typeof exports?exports["jquery-qrcode"]=t():r["jquery-qrcode"]=t()}("undefined"!=typeof self?self:this,function(){return function(e){var n={};function o(r){if(n[r])return n[r].exports;var t=n[r]={i:r,l:!1,exports:{}};return e[r].call(t.exports,t,t.exports,o),t.l=!0,t.exports}return o.m=e,o.c=n,o.d=function(r,t,e){o.o(r,t)||Object.defineProperty(r,t,{enumerable:!0,get:e})},o.r=function(r){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(r,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(r,"__esModule",{value:!0})},o.t=function(t,r){if(1&r&&(t=o(t)),8&r)return t;if(4&r&&"object"==typeof t&&t&&t.__esModule)return t;var e=Object.create(null);if(o.r(e),Object.defineProperty(e,"default",{enumerable:!0,value:t}),2&r&&"string"!=typeof t)for(var n in t)o.d(e,n,function(r){return t[r]}.bind(null,n));return e},o.n=function(r){var t=r&&r.__esModule?function(){return r.default}:function(){return r};return o.d(t,"a",t),t},o.o=function(r,t){return Object.prototype.hasOwnProperty.call(r,t)},o.p="",o(o.s=0)}([function(r,t,e){var n,u=e(1),o=window,d=o.jQuery,i=!(!(n=o.document.createElement("canvas")).getContext||!n.getContext("2d")),c=function(r){return r&&"string"==typeof r.tagName&&"IMG"===r.tagName.toUpperCase()},a=function(r,t,e,n){var o={},i=u(e,t);i.addData(r),i.make(),n=n||0;var a=i.getModuleCount(),s=a+2*n;return o.text=r,o.level=t,o.version=e,o.module_count=s,o.is_dark=function(r,t){return t-=n,0<=(r-=n)&&r<a&&0<=t&&t<a&&i.isDark(r,t)},o.add_blank=function(a,u,f,c){var l=o.is_dark,g=1/s;o.is_dark=function(r,t){var e=t*g,n=r*g,o=e+g,i=n+g;return l(r,t)&&(o<a||f<e||i<u||c<n)}},o},h=function(r,t,e,n,o){e=Math.max(1,e||1),n=Math.min(40,n||40);for(var i=e;i<=n;i+=1)try{return a(r,t,i,o)}catch(r){}},f=function(r,t,e){c(e.background)?t.drawImage(e.background,0,0,e.size,e.size):e.background&&(t.fillStyle=e.background,t.fillRect(e.left,e.top,e.size,e.size));var n=e.mode;1===n||2===n?function(r,t,e){var n=e.size,o="bold "+e.mSize*n+"px "+e.fontname,i=d("<canvas/>")[0].getContext("2d");i.font=o;var a=i.measureText(e.label).width,u=e.mSize,f=a/n,c=(1-f)*e.mPosX,l=(1-u)*e.mPosY,g=c+f,s=l+u;1===e.mode?r.add_blank(0,l-.01,n,s+.01):r.add_blank(c-.01,l-.01,.01+g,s+.01),t.fillStyle=e.fontcolor,t.font=o,t.fillText(e.label,c*n,l*n+.75*e.mSize*n)}(r,t,e):!c(e.image)||3!==n&&4!==n||function(r,t,e){var n=e.size,o=e.image.naturalWidth||1,i=e.image.naturalHeight||1,a=e.mSize,u=a*o/i,f=(1-u)*e.mPosX,c=(1-a)*e.mPosY,l=f+u,g=c+a;3===e.mode?r.add_blank(0,c-.01,n,g+.01):r.add_blank(f-.01,c-.01,.01+l,g+.01),t.drawImage(e.image,f*n,c*n,u*n,a*n)}(r,t,e)},l=function(r,t,e,n,o,i,a,u){r.is_dark(a,u)&&t.rect(n,o,i,i)},g=function(r,t,e,n,o,i,a,u){var f=r.is_dark,c=n+i,l=o+i,g=e.radius*i,s=a-1,d=a+1,h=u-1,v=u+1,w=f(a,u),p=f(s,h),y=f(s,u),m=f(s,v),b=f(a,v),k=f(d,v),B=f(d,u),C=f(d,h),x=f(a,h);w?function(r,t,e,n,o,i,a,u,f,c){a?r.moveTo(t+i,e):r.moveTo(t,e),u?(r.lineTo(n-i,e),r.arcTo(n,e,n,o,i)):r.lineTo(n,e),f?(r.lineTo(n,o-i),r.arcTo(n,o,t,o,i)):r.lineTo(n,o),c?(r.lineTo(t+i,o),r.arcTo(t,o,t,e,i)):r.lineTo(t,o),a?(r.lineTo(t,e+i),r.arcTo(t,e,n,e,i)):r.lineTo(t,e)}(t,n,o,c,l,g,!y&&!x,!y&&!b,!B&&!b,!B&&!x):function(r,t,e,n,o,i,a,u,f,c){a&&(r.moveTo(t+i,e),r.lineTo(t,e),r.lineTo(t,e+i),r.arcTo(t,e,t+i,e,i)),u&&(r.moveTo(n-i,e),r.lineTo(n,e),r.lineTo(n,e+i),r.arcTo(n,e,n-i,e,i)),f&&(r.moveTo(n-i,o),r.lineTo(n,o),r.lineTo(n,o-i),r.arcTo(n,o,n-i,o,i)),c&&(r.moveTo(t+i,o),r.lineTo(t,o),r.lineTo(t,o-i),r.arcTo(t,o,t+i,o,i))}(t,n,o,c,l,g,y&&x&&p,y&&b&&m,B&&b&&k,B&&x&&C)},s=function(r,t){var e=h(t.text,t.ecLevel,t.minVersion,t.maxVersion,t.quiet);if(!e)return null;var n=d(r).data("qrcode",e),o=n[0].getContext("2d");return f(e,o,t),function(r,t,e){var n,o,i=r.module_count,a=e.size/i,u=l;for(0<e.radius&&e.radius<=.5&&(u=g),t.beginPath(),n=0;n<i;n+=1)for(o=0;o<i;o+=1)u(r,t,e,e.left+o*a,e.top+n*a,a,n,o);if(c(e.fill)){t.strokeStyle="rgba(0,0,0,0.5)",t.lineWidth=2,t.stroke();var f=t.globalCompositeOperation;t.globalCompositeOperation="destination-out",t.fill(),t.globalCompositeOperation=f,t.clip(),t.drawImage(e.fill,0,0,e.size,e.size),t.restore()}else t.fillStyle=e.fill,t.fill()}(e,o,t),n},v=function(r){var t=d("<canvas/>").attr("width",r.size).attr("height",r.size);return s(t,r)},w=function(r){return i&&"canvas"===r.render?v(r):i&&"image"===r.render?function(r){return d("<img/>").attr("src",v(r)[0].toDataURL("image/png"))}(r):function(r){var t=h(r.text,r.ecLevel,r.minVersion,r.maxVersion,r.quiet);if(!t)return null;var e,n,o=r.size,i=r.background,a=Math.floor,u=t.module_count,f=a(o/u),c=a(.5*(o-f*u)),l={position:"relative",left:0,top:0,padding:0,margin:0,width:o,height:o},g={position:"absolute",padding:0,margin:0,width:f,height:f,"background-color":r.fill},s=d("<div/>").data("qrcode",t).css(l);for(i&&s.css("background-color",i),e=0;e<u;e+=1)for(n=0;n<u;n+=1)t.is_dark(e,n)&&d("<div/>").css(g).css({left:c+n*f,top:c+e*f}).appendTo(s);return s}(r)},p={render:"canvas",minVersion:1,maxVersion:40,ecLevel:"L",left:0,top:0,size:200,fill:"#000",background:"#fff",text:"no text",radius:0,quiet:0,mode:0,mSize:.1,mPosX:.5,mPosY:.5,label:"no label",fontname:"sans",fontcolor:"#000",image:null};d.fn.qrcode=r.exports=function(r){var e=d.extend({},p,r);return this.each(function(r,t){"canvas"===t.nodeName.toLowerCase()?s(t,e):d(t).append(w(e))})}},function(r,t){var e,n=function(){var o=function(r,t){var u=r,a=p[t],l=null,g=0,e=null,n=new Array,f={},o=function(r,t){l=function(r){for(var t=new 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i=0,a=t.isDark(n,o),u=-1;u<=1;u+=1)if(!(n+u<0||r<=n+u))for(var f=-1;f<=1;f+=1)o+f<0||r<=o+f||0==u&&0==f||a==t.isDark(n+u,o+f)&&(i+=1);5<i&&(e+=3+i-5)}for(n=0;n<r-1;n+=1)for(o=0;o<r-1;o+=1){var c=0;t.isDark(n,o)&&(c+=1),t.isDark(n+1,o)&&(c+=1),t.isDark(n,o+1)&&(c+=1),t.isDark(n+1,o+1)&&(c+=1),0!=c&&4!=c||(e+=3)}for(n=0;n<r;n+=1)for(o=0;o<r-6;o+=1)t.isDark(n,o)&&!t.isDark(n,o+1)&&t.isDark(n,o+2)&&t.isDark(n,o+3)&&t.isDark(n,o+4)&&!t.isDark(n,o+5)&&t.isDark(n,o+6)&&(e+=40);for(o=0;o<r;o+=1)for(n=0;n<r-6;n+=1)t.isDark(n,o)&&!t.isDark(n+1,o)&&t.isDark(n+2,o)&&t.isDark(n+3,o)&&t.isDark(n+4,o)&&!t.isDark(n+5,o)&&t.isDark(n+6,o)&&(e+=40);var l=0;for(o=0;o<r;o+=1)for(n=0;n<r;n+=1)t.isDark(n,o)&&(l+=1);return e+=10*(Math.abs(100*l/r/r-50)/5)},t}(),p=function(){for(var r=new Array(256),e=new Array(256),t=0;t<8;t+=1)r[t]=1<<t;for(t=8;t<256;t+=1)r[t]=r[t-4]^r[t-5]^r[t-6]^r[t-8];for(t=0;t<255;t+=1)e[r[t]]=t;var n={glog:function(t){if(t<1)throw"glog("+t+")";return e[t]},gexp:function(t){for(;t<0;)t+=255;for(;256<=t;)t-=255;return r[t]}};return n}();function m(n,o){if(void 0===n.length)throw n.length+"/"+o;var r=function(){for(var t=0;t<n.length&&0==n[t];)t+=1;for(var r=new Array(n.length-t+o),e=0;e<n.length-t;e+=1)r[e]=n[e+t];return r}(),i={getAt:function(t){return r[t]},getLength:function(){return r.length},multiply:function(t){for(var r=new Array(i.getLength()+t.getLength()-1),e=0;e<i.getLength();e+=1)for(var n=0;n<t.getLength();n+=1)r[e+n]^=p.gexp(p.glog(i.getAt(e))+p.glog(t.getAt(n)));return m(r,0)},mod:function(t){if(i.getLength()-t.getLength()<0)return i;for(var r=p.glog(i.getAt(0))-p.glog(t.getAt(0)),e=new Array(i.getLength()),n=0;n<i.getLength();n+=1)e[n]=i.getAt(n);for(n=0;n<t.getLength();n+=1)e[n]^=p.gexp(p.glog(t.getAt(n))+r);return m(e,0).mod(t)}};return i}function b(){var e=[],o={writeByte:function(t){e.push(255&t)},writeShort:function(t){o.writeByte(t),o.writeByte(t>>>8)},writeBytes:function(t,r,e){r=r||0,e=e||t.length;for(var n=0;n<e;n+=1)o.writeByte(t[n+r])},writeString:function(t){for(var r=0;r<t.length;r+=1)o.writeByte(t.charCodeAt(r))},toByteArray:function(){return e},toString:function(){var t="";t+="[";for(var r=0;r<e.length;r+=1)0<r&&(t+=","),t+=e[r];return t+="]"}};return o}var k,t,C=(k=[[1,26,19],[1,26,16],[1,26,13],[1,26,9],[1,44,34],[1,44,28],[1,44,22],[1,44,16],[1,70,55],[1,70,44],[2,35,17],[2,35,13],[1,100,80],[2,50,32],[2,50,24],[4,25,9],[1,134,108],[2,67,43],[2,33,15,2,34,16],[2,33,11,2,34,12],[2,86,68],[4,43,27],[4,43,19],[4,43,15],[2,98,78],[4,49,31],[2,32,14,4,33,15],[4,39,13,1,40,14],[2,121,97],[2,60,38,2,61,39],[4,40,18,2,41,19],[4,40,14,2,41,15],[2,146,116],[3,58,36,2,59,37],[4,36,16,4,37,17],[4,36,12,4,37,13],[2,86,68,2,87,69],[4,69,43,1,70,44],[6,43,19,2,44,20],[6,43,15,2,44,16],[4,101,81],[1,80,50,4,81,51],[4,50,22,4,51,23],[3,36,12,8,37,13],[2,116,92,2,117,93],[6,58,36,2,59,37],[4,46,20,6,47,21],[7,42,14,4,43,15],[4,133,107],[8,59,37,1,60,38],[8,44,20,4,45,21],[12,33,11,4,34,12],[3,145,115,1,146,116],[4,64,40,5,65,41],[11,36,16,5,37,17],[11,36,12,5,37,13],[5,109,87,1,110,88],[5,65,41,5,66,42],[5,54,24,7,55,25],[11,36,12,7,37,13],[5,122,98,1,123,99],[7,73,45,3,74,46],[15,43,19,2,44,20],[3,45,15,13,46,16],[1,135,107,5,136,108],[10,74,46,1,75,47],[1,50,22,15,51,23],[2,42,14,17,43,15],[5,150,120,1,151,121],[9,69,43,4,70,44],[17,50,22,1,51,23],[2,42,14,19,43,15],[3,141,113,4,142,114],[3,70,44,11,71,45],[17,47,21,4,48,22],[9,39,13,16,40,14],[3,135,107,5,136,108],[3,67,41,13,68,42],[15,54,24,5,55,25],[15,43,15,10,44,16],[4,144,116,4,145,117],[17,68,42],[17,50,22,6,51,23],[19,46,16,6,47,17],[2,139,111,7,140,112],[17,74,46],[7,54,24,16,55,25],[34,37,13],[4,151,121,5,152,122],[4,75,47,14,76,48],[11,54,24,14,55,25],[16,45,15,14,46,16],[6,147,117,4,148,118],[6,73,45,14,74,46],[11,54,24,16,55,25],[30,46,16,2,47,17],[8,132,106,4,133,107],[8,75,47,13,76,48],[7,54,24,22,55,25],[22,45,15,13,46,16],[10,142,114,2,143,115],[19,74,46,4,75,47],[28,50,22,6,51,23],[33,46,16,4,47,17],[8,152,122,4,153,123],[22,73,45,3,74,46],[8,53,23,26,54,24],[12,45,15,28,46,16],[3,147,117,10,148,118],[3,73,45,23,74,46],[4,54,24,31,55,25],[11,45,15,31,46,16],[7,146,116,7,147,117],[21,73,45,7,74,46],[1,53,23,37,54,24],[19,45,15,26,46,16],[5,145,115,10,146,116],[19,75,47,10,76,48],[15,54,24,25,55,25],[23,45,15,25,46,16],[13,145,115,3,146,116],[2,74,46,29,75,47],[42,54,24,1,55,25],[23,45,15,28,46,16],[17,145,115],[10,74,46,23,75,47],[10,54,24,35,55,25],[19,45,15,35,46,16],[17,145,115,1,146,116],[14,74,46,21,75,47],[29,54,24,19,55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]],(t={}).getRSBlocks=function(t,r){var e=function(t,r){switch(r){case w.L:return k[4*(t-1)+0];case w.M:return k[4*(t-1)+1];case w.Q:return k[4*(t-1)+2];case w.H:return k[4*(t-1)+3];default:return}}(t,r);if(void 0===e)throw"bad rs block @ typeNumber:"+t+"/errorCorrectionLevel:"+r;for(var n,o,i=e.length/3,a=[],u=0;u<i;u+=1)for(var f=e[3*u+0],c=e[3*u+1],l=e[3*u+2],g=0;g<f;g+=1)a.push((n=l,o=void 0,(o={}).totalCount=c,o.dataCount=n,o));return a},t),B=function(){var e=[],n=0,o={getBuffer:function(){return e},getAt:function(t){var r=Math.floor(t/8);return 1==(e[r]>>>7-t%8&1)},put:function(t,r){for(var e=0;e<r;e+=1)o.putBit(1==(t>>>r-e-1&1))},getLengthInBits:function(){return n},putBit:function(t){var r=Math.floor(n/8);e.length<=r&&e.push(0),t&&(e[r]|=128>>>n%8),n+=1}};return o},x=function(t){var r=a,n=t,e={getMode:function(){return r},getLength:function(t){return n.length},write:function(t){for(var r=n,e=0;e+2<r.length;)t.put(o(r.substring(e,e+3)),10),e+=3;e<r.length&&(r.length-e==1?t.put(o(r.substring(e,e+1)),4):r.length-e==2&&t.put(o(r.substring(e,e+2)),7))}},o=function(t){for(var r=0,e=0;e<t.length;e+=1)r=10*r+i(t.charAt(e));return r},i=function(t){if("0"<=t&&t<="9")return t.charCodeAt(0)-"0".charCodeAt(0);throw"illegal char :"+t};return e},T=function(t){var r=u,n=t,e={getMode:function(){return r},getLength:function(t){return n.length},write:function(t){for(var r=n,e=0;e+1<r.length;)t.put(45*o(r.charAt(e))+o(r.charAt(e+1)),11),e+=2;e<r.length&&t.put(o(r.charAt(e)),6)}},o=function(t){if("0"<=t&&t<="9")return t.charCodeAt(0)-"0".charCodeAt(0);if("A"<=t&&t<="Z")return t.charCodeAt(0)-"A".charCodeAt(0)+10;switch(t){case" ":return 36;case"$":return 37;case"%":return 38;case"*":return 39;case"+":return 40;case"-":return 41;case".":return 42;case"/":return 43;case":":return 44;default:throw"illegal char :"+t}};return e},M=function(t){var r=o,e=i.stringToBytes(t),n={getMode:function(){return r},getLength:function(t){return e.length},write:function(t){for(var r=0;r<e.length;r+=1)t.put(e[r],8)}};return n},A=function(t){var r=f,n=i.stringToBytesFuncs.SJIS;if(!n)throw"sjis not supported.";!function(t,r){var e=n("友");if(2!=e.length||38726!=(e[0]<<8|e[1]))throw"sjis not supported."}();var o=n(t),e={getMode:function(){return r},getLength:function(t){return~~(o.length/2)},write:function(t){for(var r=o,e=0;e+1<r.length;){var n=(255&r[e])<<8|255&r[e+1];if(33088<=n&&n<=40956)n-=33088;else{if(!(57408<=n&&n<=60351))throw"illegal char at "+(e+1)+"/"+n;n-=49472}n=192*(n>>>8&255)+(255&n),t.put(n,13),e+=2}if(e<r.length)throw"illegal char at "+(e+1)}};return e},S=function(t){var e=t,n=0,o=0,i=0,r={read:function(){for(;i<8;){if(n>=e.length){if(0==i)return-1;throw"unexpected end of file./"+i}var t=e.charAt(n);if(n+=1,"="==t)return i=0,-1;t.match(/^\s$/)||(o=o<<6|a(t.charCodeAt(0)),i+=6)}var r=o>>>i-8&255;return i-=8,r}},a=function(t){if(65<=t&&t<=90)return t-65;if(97<=t&&t<=122)return t-97+26;if(48<=t&&t<=57)return t-48+52;if(43==t)return 62;if(47==t)return 63;throw"c:"+t};return r},L=function(t,r,e){for(var n=function(t,r){var n=t,o=r,g=new Array(t*r),e={setPixel:function(t,r,e){g[r*n+t]=e},write:function(t){t.writeString("GIF87a"),t.writeShort(n),t.writeShort(o),t.writeByte(128),t.writeByte(0),t.writeByte(0),t.writeByte(0),t.writeByte(0),t.writeByte(0),t.writeByte(255),t.writeByte(255),t.writeByte(255),t.writeString(","),t.writeShort(0),t.writeShort(0),t.writeShort(n),t.writeShort(o),t.writeByte(0);var r=i(2);t.writeByte(2);for(var e=0;255<r.length-e;)t.writeByte(255),t.writeBytes(r,e,255),e+=255;t.writeByte(r.length-e),t.writeBytes(r,e,r.length-e),t.writeByte(0),t.writeString(";")}},i=function(t){for(var r=1<<t,e=1+(1<<t),n=t+1,o=s(),i=0;i<r;i+=1)o.add(String.fromCharCode(i));o.add(String.fromCharCode(r)),o.add(String.fromCharCode(e));var a=b(),u=function(t){var e=t,n=0,o=0,r={write:function(t,r){if(t>>>r!=0)throw"length over";for(;8<=n+r;)e.writeByte(255&(t<<n|o)),r-=8-n,t>>>=8-n,n=o=0;o|=t<<n,n+=r},flush:function(){0<n&&e.writeByte(o)}};return r}(a);u.write(r,n);var f=0,c=String.fromCharCode(g[f]);for(f+=1;f<g.length;){var l=String.fromCharCode(g[f]);f+=1,o.contains(c+l)?c+=l:(u.write(o.indexOf(c),n),o.size()<4095&&(o.size()==1<<n&&(n+=1),o.add(c+l)),c=l)}return u.write(o.indexOf(c),n),u.write(e,n),u.flush(),a.toByteArray()},s=function(){var r={},e=0,n={add:function(t){if(n.contains(t))throw"dup key:"+t;r[t]=e,e+=1},size:function(){return e},indexOf:function(t){return r[t]},contains:function(t){return void 0!==r[t]}};return n};return e}(t,r),o=0;o<r;o+=1)for(var i=0;i<t;i+=1)n.setPixel(i,o,e(i,o));var a=b();n.write(a);for(var u=function(){function e(t){a+=String.fromCharCode(r(63&t))}var n=0,o=0,i=0,a="",t={},r=function(t){if(t<0);else{if(t<26)return 65+t;if(t<52)return t-26+97;if(t<62)return t-52+48;if(62==t)return 43;if(63==t)return 47}throw"n:"+t};return t.writeByte=function(t){for(n=n<<8|255&t,o+=8,i+=1;6<=o;)e(n>>>o-6),o-=6},t.flush=function(){if(0<o&&(e(n<<6-o),o=n=0),i%3!=0)for(var t=3-i%3,r=0;r<t;r+=1)a+="="},t.toString=function(){return a},t}(),f=a.toByteArray(),c=0;c<f.length;c+=1)u.writeByte(f[c]);return u.flush(),"data:image/gif;base64,"+u};return i}();a.stringToBytesFuncs["UTF-8"]=function(t){return function(t){for(var r=[],e=0;e<t.length;e++){var n=t.charCodeAt(e);n<128?r.push(n):n<2048?r.push(192|n>>6,128|63&n):n<55296||57344<=n?r.push(224|n>>12,128|n>>6&63,128|63&n):(e++,n=65536+((1023&n)<<10|1023&t.charCodeAt(e)),r.push(240|n>>18,128|n>>12&63,128|n>>6&63,128|63&n))}return r}(t)},o=[],void 0===(i="function"==typeof(n=function(){return a})?n.apply(r,o):n)||(t.exports=i)}])});
\ No newline at end of file
diff --git a/ghu.js b/ghu.js
index 6c3ac15..52179db 100644
--- a/ghu.js
+++ b/ghu.js
@@ -1,5 +1,6 @@
 const {resolve, join} = require('path');
-const {ghu, includeit, pug, jszip, mapfn, read, remove, webpack, uglify, wrap, write} = require('ghu');
+const {ghu, pug, jszip, mapfn, read, remove, webpack, uglify, wrap, write} = require('ghu');
+const overwrite = arg => write(arg, {overwrite: true});
 
 const NAME = 'jquery-qrcode';
 
@@ -14,58 +15,52 @@ ghu.before(runtime => {
     runtime.pkg = Object.assign({}, require('./package.json'));
     runtime.comment = `${runtime.pkg.name} v${runtime.pkg.version} - ${runtime.pkg.homepage}`;
     runtime.commentJs = `/*! ${runtime.comment} */\n`;
-
     console.log(runtime.comment);
 });
 
-ghu.task('clean', 'delete build folder', () => {
+ghu.task('clean', () => {
     return remove(`${BUILD}, ${DIST}`);
 });
 
 ghu.task('build:scripts', runtime => {
     return read(`${SRC}/${NAME}.js`)
-        .then(webpack(webpack.cfg_umd(NAME, [SRC]), {showStats: false}))
-        .then(includeit())
+        .then(webpack(webpack.cfg_umd(NAME, [SRC])))
         .then(wrap(runtime.commentJs))
-        .then(write(`${DIST}/${NAME}.js`, {overwrite: true}))
-        .then(write(`${BUILD}/${NAME}-${runtime.pkg.version}.js`, {overwrite: true}))
+        .then(overwrite(`${DIST}/${NAME}.js`))
+        .then(overwrite(`${BUILD}/${NAME}-${runtime.pkg.version}.js`))
         .then(uglify())
         .then(wrap(runtime.commentJs))
-        .then(write(`${DIST}/${NAME}.min.js`, {overwrite: true}))
-        .then(write(`${BUILD}/${NAME}-${runtime.pkg.version}.min.js`, {overwrite: true}));
+        .then(overwrite(`${DIST}/${NAME}.min.js`))
+        .then(overwrite(`${BUILD}/${NAME}-${runtime.pkg.version}.min.js`));
 });
 
-ghu.task('build:demo', runtime => {
+ghu.task('build:other', runtime => {
     return Promise.all([
+        read(`${ROOT}/*.md`)
+            .then(overwrite(mapfn.p(ROOT, BUILD))),
+
         read(`${SRC}/demo/*.pug`)
             .then(pug({pkg: runtime.pkg}))
-            .then(write(mapfn.p(SRC, BUILD).s('.pug', ''), {overwrite: true})),
+            .then(overwrite(mapfn.p(SRC, BUILD).s('.pug', ''))),
         read(`${SRC}/demo/*.js`)
-            .then(webpack(webpack.cfg([SRC]), {showStats: false}))
+            .then(webpack(webpack.cfg([SRC])))
             .then(uglify())
             .then(wrap(runtime.commentJs))
-            .then(write(mapfn.p(SRC, BUILD), {overwrite: true})),
+            .then(overwrite(mapfn.p(SRC, BUILD))),
         read(`${SRC}/demo/*, !**/*.pug, !**/*.js`)
-            .then(write(mapfn.p(SRC, BUILD), {overwrite: true})),
+            .then(overwrite(mapfn.p(SRC, BUILD))),
 
         read(`${ROOT}/node_modules/jquery/dist/jquery.min.js`)
-            .then(write(`${BUILD}/demo/jquery.min.js`, {overwrite: true}))
-    ]);
-});
-
-ghu.task('build:copy', () => {
-    return Promise.all([
-        read(`${ROOT}/*.md`)
-            .then(write(mapfn.p(ROOT, BUILD), {overwrite: true}))
+            .then(overwrite(`${BUILD}/demo/jquery.min.js`))
     ]);
 });
 
-ghu.task('build', ['build:scripts', 'build:demo', 'build:copy']);
+ghu.task('build', ['build:scripts', 'build:other']);
 
 ghu.task('zip', ['build'], runtime => {
     return read(`${BUILD}/**/*`)
         .then(jszip({dir: BUILD, level: 9}))
-        .then(write(`${BUILD}/${NAME}-${runtime.pkg.version}.zip`, {overwrite: true}));
+        .then(overwrite(`${BUILD}/${NAME}-${runtime.pkg.version}.zip`));
 });
 
 ghu.task('release', ['clean', 'zip']);
diff --git a/package-lock.json b/package-lock.json
index f4739b1..3aadaf8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "jquery-qrcode",
-  "version": "0.16.0",
+  "version": "0.17.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -14,18 +14,18 @@
       }
     },
     "@babel/core": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.4.3.tgz",
-      "integrity": "sha512-oDpASqKFlbspQfzAE7yaeTmdljSH2ADIvBlb0RwbStltTuWa0+7CCI1fYVINNv9saHPa1W7oaKeuNuKj+RQCvA==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.4.4.tgz",
+      "integrity": "sha512-lQgGX3FPRgbz2SKmhMtYgJvVzGZrmjaF4apZ2bLwofAKiSjxU0drPh4S/VasyYXwaTs+A1gvQ45BN8SQJzHsQQ==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.4.0",
-        "@babel/helpers": "^7.4.3",
-        "@babel/parser": "^7.4.3",
-        "@babel/template": "^7.4.0",
-        "@babel/traverse": "^7.4.3",
-        "@babel/types": "^7.4.0",
+        "@babel/generator": "^7.4.4",
+        "@babel/helpers": "^7.4.4",
+        "@babel/parser": "^7.4.4",
+        "@babel/template": "^7.4.4",
+        "@babel/traverse": "^7.4.4",
+        "@babel/types": "^7.4.4",
         "convert-source-map": "^1.1.0",
         "debug": "^4.1.0",
         "json5": "^2.1.0",
@@ -36,12 +36,12 @@
       }
     },
     "@babel/generator": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.4.0.tgz",
-      "integrity": "sha512-/v5I+a1jhGSKLgZDcmAUZ4K/VePi43eRkUs3yePW1HB1iANOD5tqJXwGSG4BZhSksP8J9ejSlwGeTiiOFZOrXQ==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.4.4.tgz",
+      "integrity": "sha512-53UOLK6TVNqKxf7RUh8NE851EHRxOOeVXKbK2bivdb+iziMyk03Sr4eaE9OELCbyZAAafAKPDwF2TPUES5QbxQ==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.4.0",
+        "@babel/types": "^7.4.4",
         "jsesc": "^2.5.1",
         "lodash": "^4.17.11",
         "source-map": "^0.5.0",
@@ -68,24 +68,24 @@
       }
     },
     "@babel/helper-call-delegate": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-call-delegate/-/helper-call-delegate-7.4.0.tgz",
-      "integrity": "sha512-SdqDfbVdNQCBp3WhK2mNdDvHd3BD6qbmIc43CAyjnsfCmgHMeqgDcM3BzY2lchi7HBJGJ2CVdynLWbezaE4mmQ==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-call-delegate/-/helper-call-delegate-7.4.4.tgz",
+      "integrity": "sha512-l79boDFJ8S1c5hvQvG+rc+wHw6IuH7YldmRKsYtpbawsxURu/paVy57FZMomGK22/JckepaikOkY0MoAmdyOlQ==",
       "dev": true,
       "requires": {
-        "@babel/helper-hoist-variables": "^7.4.0",
-        "@babel/traverse": "^7.4.0",
-        "@babel/types": "^7.4.0"
+        "@babel/helper-hoist-variables": "^7.4.4",
+        "@babel/traverse": "^7.4.4",
+        "@babel/types": "^7.4.4"
       }
     },
     "@babel/helper-define-map": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.4.0.tgz",
-      "integrity": "sha512-wAhQ9HdnLIywERVcSvX40CEJwKdAa1ID4neI9NXQPDOHwwA+57DqwLiPEVy2AIyWzAk0CQ8qx4awO0VUURwLtA==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.4.4.tgz",
+      "integrity": "sha512-IX3Ln8gLhZpSuqHJSnTNBWGDE9kdkTEWl21A/K7PQ00tseBwbqCHTvNLHSBd9M0R5rER4h5Rsvj9vw0R5SieBg==",
       "dev": true,
       "requires": {
         "@babel/helper-function-name": "^7.1.0",
-        "@babel/types": "^7.4.0",
+        "@babel/types": "^7.4.4",
         "lodash": "^4.17.11"
       }
     },
@@ -120,12 +120,12 @@
       }
     },
     "@babel/helper-hoist-variables": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-hoist-variables/-/helper-hoist-variables-7.4.0.tgz",
-      "integrity": "sha512-/NErCuoe/et17IlAQFKWM24qtyYYie7sFIrW/tIQXpck6vAu2hhtYYsKLBWQV+BQZMbcIYPU/QMYuTufrY4aQw==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-hoist-variables/-/helper-hoist-variables-7.4.4.tgz",
+      "integrity": "sha512-VYk2/H/BnYbZDDg39hr3t2kKyifAm1W6zHRfhx8jGjIHpQEBv9dry7oQ2f3+J703TLu69nYdxsovl0XYfcnK4w==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.4.0"
+        "@babel/types": "^7.4.4"
       }
     },
     "@babel/helper-member-expression-to-functions": {
@@ -147,16 +147,16 @@
       }
     },
     "@babel/helper-module-transforms": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.4.3.tgz",
-      "integrity": "sha512-H88T9IySZW25anu5uqyaC1DaQre7ofM+joZtAaO2F8NBdFfupH0SZ4gKjgSFVcvtx/aAirqA9L9Clio2heYbZA==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.4.4.tgz",
+      "integrity": "sha512-3Z1yp8TVQf+B4ynN7WoHPKS8EkdTbgAEy0nU0rs/1Kw4pDgmvYH3rz3aI11KgxKCba2cn7N+tqzV1mY2HMN96w==",
       "dev": true,
       "requires": {
         "@babel/helper-module-imports": "^7.0.0",
         "@babel/helper-simple-access": "^7.1.0",
-        "@babel/helper-split-export-declaration": "^7.0.0",
-        "@babel/template": "^7.2.2",
-        "@babel/types": "^7.2.2",
+        "@babel/helper-split-export-declaration": "^7.4.4",
+        "@babel/template": "^7.4.4",
+        "@babel/types": "^7.4.4",
         "lodash": "^4.17.11"
       }
     },
@@ -176,9 +176,9 @@
       "dev": true
     },
     "@babel/helper-regex": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-regex/-/helper-regex-7.4.3.tgz",
-      "integrity": "sha512-hnoq5u96pLCfgjXuj8ZLX3QQ+6nAulS+zSgi6HulUwFbEruRAKwbGLU5OvXkE14L8XW6XsQEKsIDfgthKLRAyA==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-regex/-/helper-regex-7.4.4.tgz",
+      "integrity": "sha512-Y5nuB/kESmR3tKjU8Nkn1wMGEx1tjJX076HBMeL3XLQCu6vA/YRzuTW0bbb+qRnXvQGn+d6Rx953yffl8vEy7Q==",
       "dev": true,
       "requires": {
         "lodash": "^4.17.11"
@@ -198,15 +198,15 @@
       }
     },
     "@babel/helper-replace-supers": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-replace-supers/-/helper-replace-supers-7.4.0.tgz",
-      "integrity": "sha512-PVwCVnWWAgnal+kJ+ZSAphzyl58XrFeSKSAJRiqg5QToTsjL+Xu1f9+RJ+d+Q0aPhPfBGaYfkox66k86thxNSg==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-replace-supers/-/helper-replace-supers-7.4.4.tgz",
+      "integrity": "sha512-04xGEnd+s01nY1l15EuMS1rfKktNF+1CkKmHoErDppjAAZL+IUBZpzT748x262HF7fibaQPhbvWUl5HeSt1EXg==",
       "dev": true,
       "requires": {
         "@babel/helper-member-expression-to-functions": "^7.0.0",
         "@babel/helper-optimise-call-expression": "^7.0.0",
-        "@babel/traverse": "^7.4.0",
-        "@babel/types": "^7.4.0"
+        "@babel/traverse": "^7.4.4",
+        "@babel/types": "^7.4.4"
       }
     },
     "@babel/helper-simple-access": {
@@ -220,12 +220,12 @@
       }
     },
     "@babel/helper-split-export-declaration": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.4.0.tgz",
-      "integrity": "sha512-7Cuc6JZiYShaZnybDmfwhY4UYHzI6rlqhWjaIqbsJGsIqPimEYy5uh3akSRLMg65LSdSEnJ8a8/bWQN6u2oMGw==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.4.4.tgz",
+      "integrity": "sha512-Ro/XkzLf3JFITkW6b+hNxzZ1n5OQ80NvIUdmHspih1XAhtN3vPTuUFT4eQnela+2MaZ5ulH+iyP513KJrxbN7Q==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.4.0"
+        "@babel/types": "^7.4.4"
       }
     },
     "@babel/helper-wrap-function": {
@@ -241,14 +241,14 @@
       }
     },
     "@babel/helpers": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.4.3.tgz",
-      "integrity": "sha512-BMh7X0oZqb36CfyhvtbSmcWc3GXocfxv3yNsAEuM0l+fAqSO22rQrUpijr3oE/10jCTrB6/0b9kzmG4VetCj8Q==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.4.4.tgz",
+      "integrity": "sha512-igczbR/0SeuPR8RFfC7tGrbdTbFL3QTvH6D+Z6zNxnTe//GyqmtHmDkzrqDmyZ3eSwPqB/LhyKoU5DXsp+Vp2A==",
       "dev": true,
       "requires": {
-        "@babel/template": "^7.4.0",
-        "@babel/traverse": "^7.4.3",
-        "@babel/types": "^7.4.0"
+        "@babel/template": "^7.4.4",
+        "@babel/traverse": "^7.4.4",
+        "@babel/types": "^7.4.4"
       }
     },
     "@babel/highlight": {
@@ -263,9 +263,9 @@
       }
     },
     "@babel/parser": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.4.3.tgz",
-      "integrity": "sha512-gxpEUhTS1sGA63EGQGuA+WESPR/6tz6ng7tSHFCmaTJK/cGK8y37cBTspX+U2xCAue2IQVvF6Z0oigmjwD8YGQ==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.4.4.tgz",
+      "integrity": "sha512-5pCS4mOsL+ANsFZGdvNLybx4wtqAZJ0MJjMHxvzI3bvIsz6sQvzW8XX92EYIkiPtIvcfG3Aj+Ir5VNyjnZhP7w==",
       "dev": true
     },
     "@babel/plugin-proposal-async-generator-functions": {
@@ -290,9 +290,9 @@
       }
     },
     "@babel/plugin-proposal-object-rest-spread": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.4.3.tgz",
-      "integrity": "sha512-xC//6DNSSHVjq8O2ge0dyYlhshsH4T7XdCVoxbi5HzLYWfsC5ooFlJjrXk8RcAT+hjHAK9UjBXdylzSoDK3t4g==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.4.4.tgz",
+      "integrity": "sha512-dMBG6cSPBbHeEBdFXeQ2QLc5gUpg4Vkaz8octD4aoW/ISO+jBOcsuxYL7bsb5WSu8RLP6boxrBIALEHgoHtO9g==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.0.0",
@@ -310,13 +310,13 @@
       }
     },
     "@babel/plugin-proposal-unicode-property-regex": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.4.0.tgz",
-      "integrity": "sha512-h/KjEZ3nK9wv1P1FSNb9G079jXrNYR0Ko+7XkOx85+gM24iZbPn0rh4vCftk+5QKY7y1uByFataBTmX7irEF1w==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.4.4.tgz",
+      "integrity": "sha512-j1NwnOqMG9mFUOH58JTFsA/+ZYzQLUZ/drqWUqxCYLGeu2JFZL8YrNC9hBxKmWtAuOCHPcRpgv7fhap09Fb4kA==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/helper-regex": "^7.0.0",
+        "@babel/helper-regex": "^7.4.4",
         "regexpu-core": "^4.5.4"
       }
     },
@@ -366,9 +366,9 @@
       }
     },
     "@babel/plugin-transform-async-to-generator": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-async-to-generator/-/plugin-transform-async-to-generator-7.4.0.tgz",
-      "integrity": "sha512-EeaFdCeUULM+GPFEsf7pFcNSxM7hYjoj5fiYbyuiXobW4JhFnjAv9OWzNwHyHcKoPNpAfeRDuW6VyaXEDUBa7g==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-async-to-generator/-/plugin-transform-async-to-generator-7.4.4.tgz",
+      "integrity": "sha512-YiqW2Li8TXmzgbXw+STsSqPBPFnGviiaSp6CYOq55X8GQ2SGVLrXB6pNid8HkqkZAzOH6knbai3snhP7v0fNwA==",
       "dev": true,
       "requires": {
         "@babel/helper-module-imports": "^7.0.0",
@@ -386,9 +386,9 @@
       }
     },
     "@babel/plugin-transform-block-scoping": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.4.0.tgz",
-      "integrity": "sha512-AWyt3k+fBXQqt2qb9r97tn3iBwFpiv9xdAiG+Gr2HpAZpuayvbL55yWrsV3MyHvXk/4vmSiedhDRl1YI2Iy5nQ==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.4.4.tgz",
+      "integrity": "sha512-jkTUyWZcTrwxu5DD4rWz6rDB5Cjdmgz6z7M7RLXOJyCUkFBawssDGcGh8M/0FTSB87avyJI1HsTwUXp9nKA1PA==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.0.0",
@@ -396,18 +396,18 @@
       }
     },
     "@babel/plugin-transform-classes": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-classes/-/plugin-transform-classes-7.4.3.tgz",
-      "integrity": "sha512-PUaIKyFUDtG6jF5DUJOfkBdwAS/kFFV3XFk7Nn0a6vR7ZT8jYw5cGtIlat77wcnd0C6ViGqo/wyNf4ZHytF/nQ==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-classes/-/plugin-transform-classes-7.4.4.tgz",
+      "integrity": "sha512-/e44eFLImEGIpL9qPxSRat13I5QNRgBLu2hOQJCF7VLy/otSM/sypV1+XaIw5+502RX/+6YaSAPmldk+nhHDPw==",
       "dev": true,
       "requires": {
         "@babel/helper-annotate-as-pure": "^7.0.0",
-        "@babel/helper-define-map": "^7.4.0",
+        "@babel/helper-define-map": "^7.4.4",
         "@babel/helper-function-name": "^7.1.0",
         "@babel/helper-optimise-call-expression": "^7.0.0",
         "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/helper-replace-supers": "^7.4.0",
-        "@babel/helper-split-export-declaration": "^7.4.0",
+        "@babel/helper-replace-supers": "^7.4.4",
+        "@babel/helper-split-export-declaration": "^7.4.4",
         "globals": "^11.1.0"
       }
     },
@@ -421,22 +421,22 @@
       }
     },
     "@babel/plugin-transform-destructuring": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-destructuring/-/plugin-transform-destructuring-7.4.3.tgz",
-      "integrity": "sha512-rVTLLZpydDFDyN4qnXdzwoVpk1oaXHIvPEOkOLyr88o7oHxVc/LyrnDx+amuBWGOwUb7D1s/uLsKBNTx08htZg==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-destructuring/-/plugin-transform-destructuring-7.4.4.tgz",
+      "integrity": "sha512-/aOx+nW0w8eHiEHm+BTERB2oJn5D127iye/SUQl7NjHy0lf+j7h4MKMMSOwdazGq9OxgiNADncE+SRJkCxjZpQ==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
     "@babel/plugin-transform-dotall-regex": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-dotall-regex/-/plugin-transform-dotall-regex-7.4.3.tgz",
-      "integrity": "sha512-9Arc2I0AGynzXRR/oPdSALv3k0rM38IMFyto7kOCwb5F9sLUt2Ykdo3V9yUPR+Bgr4kb6bVEyLkPEiBhzcTeoA==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-dotall-regex/-/plugin-transform-dotall-regex-7.4.4.tgz",
+      "integrity": "sha512-P05YEhRc2h53lZDjRPk/OektxCVevFzZs2Gfjd545Wde3k+yFDbXORgl2e0xpbq8mLcKJ7Idss4fAg0zORN/zg==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/helper-regex": "^7.4.3",
+        "@babel/helper-regex": "^7.4.4",
         "regexpu-core": "^4.5.4"
       }
     },
@@ -460,18 +460,18 @@
       }
     },
     "@babel/plugin-transform-for-of": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-for-of/-/plugin-transform-for-of-7.4.3.tgz",
-      "integrity": "sha512-UselcZPwVWNSURnqcfpnxtMehrb8wjXYOimlYQPBnup/Zld426YzIhNEvuRsEWVHfESIECGrxoI6L5QqzuLH5Q==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-for-of/-/plugin-transform-for-of-7.4.4.tgz",
+      "integrity": "sha512-9T/5Dlr14Z9TIEXLXkt8T1DU7F24cbhwhMNUziN3hB1AXoZcdzPcTiKGRn/6iOymDqtTKWnr/BtRKN9JwbKtdQ==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
     "@babel/plugin-transform-function-name": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-function-name/-/plugin-transform-function-name-7.4.3.tgz",
-      "integrity": "sha512-uT5J/3qI/8vACBR9I1GlAuU/JqBtWdfCrynuOkrWG6nCDieZd5przB1vfP59FRHBZQ9DC2IUfqr/xKqzOD5x0A==",
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-function-name/-/plugin-transform-function-name-7.4.4.tgz",
+      "integrity": "sha512-iU9pv7U+2jC9ANQkKeNF6DrPy4GBa4NWQtl6dHB4Pb3izX2JOEvDTFarlNsBj/63ZEzNNIAMs3Qw4fNCcSOXJA==",
       "dev": true,
       "requires": {
         "@babel/helper-function-name": "^7.1.0",
@@ -507,23 +507,23 @@
       }
     },
     "@babel/plugin-transform-modules-commonjs": {
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     "elliptic": {
@@ -2779,14 +2779,14 @@
       "dev": true
     },
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-      "version": "1.2.7",
-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.7.tgz",
-      "integrity": "sha512-Pxm6sI2MeBD7RdD12RYsqaP0nMiwx8eZBXCa6z2L+mRHm2DYrOYwihmhjpkdjUHwQhslWQjRpEgNq4XvBmaAuw==",
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.8.tgz",
+      "integrity": "sha512-tPvHgPGB7m40CZ68xqFGkKuzN+RnpGmSV+hgeKxhRpbxdqKXUFJGC3yonBOLzQBcJyGpdZFDfCsdOC2KFsXzeA==",
       "dev": true,
       "optional": true,
       "requires": {
-        "nan": "^2.9.2",
-        "node-pre-gyp": "^0.10.0"
+        "nan": "^2.12.1",
+        "node-pre-gyp": "^0.12.0"
       },
       "dependencies": {
         "abbrev": {
@@ -2864,12 +2864,12 @@
           "optional": true
         },
         "debug": {
-          "version": "2.6.9",
+          "version": "4.1.1",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "ms": "2.0.0"
+            "ms": "^2.1.1"
           }
         },
         "deep-extend": {
@@ -3040,24 +3040,24 @@
           }
         },
         "ms": {
-          "version": "2.0.0",
+          "version": "2.1.1",
           "bundled": true,
           "dev": true,
           "optional": true
         },
         "needle": {
-          "version": "2.2.4",
+          "version": "2.3.0",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "debug": "^2.1.2",
+            "debug": "^4.1.0",
             "iconv-lite": "^0.4.4",
             "sax": "^1.2.4"
           }
         },
         "node-pre-gyp": {
-          "version": "0.10.3",
+          "version": "0.12.0",
           "bundled": true,
           "dev": true,
           "optional": true,
@@ -3085,13 +3085,13 @@
           }
         },
         "npm-bundled": {
-          "version": "1.0.5",
+          "version": "1.0.6",
           "bundled": true,
           "dev": true,
           "optional": true
         },
         "npm-packlist": {
-          "version": "1.2.0",
+          "version": "1.4.1",
           "bundled": true,
           "dev": true,
           "optional": true,
@@ -3230,7 +3230,7 @@
           "optional": true
         },
         "semver": {
-          "version": "5.6.0",
+          "version": "5.7.0",
           "bundled": true,
           "dev": true,
           "optional": true
@@ -3355,35 +3355,118 @@
       }
     },
     "ghu": {
-      "version": "0.17.0",
-      "resolved": "https://registry.npmjs.org/ghu/-/ghu-0.17.0.tgz",
-      "integrity": "sha512-iCIXgGe9+Ve4ATK5A/Qd2NKf+h2c/ne4h2uvICsofwBCNeLzRobX9cpVj02YbtuDGJHCFtTGTWreJqdPPJKOSw==",
+      "version": "0.20.0",
+      "resolved": "https://registry.npmjs.org/ghu/-/ghu-0.20.0.tgz",
+      "integrity": "sha512-FdKA8d5XmJRv3Df9O1+EyFrxM4iBqH0eXqzAq9ee3hpP+wbk2w1EcthWQKpgk2hEsNQot7H5Nac0nt0e7M6EZg==",
       "dev": true,
       "requires": {
         "@babel/core": "7.4.3",
         "@babel/preset-env": "7.4.3",
-        "autoprefixer": "9.5.0",
+        "autoprefixer": "9.5.1",
         "babel-loader": "8.0.5",
         "chalk": "2.4.2",
         "commander": "2.20.0",
         "cssmin": "0.4.3",
         "dateformat": "3.0.3",
-        "escape-string-regexp": "1.0.5",
-        "eslint": "5.16.0",
+        "escape-string-regexp": "2.0.0",
         "glob": "7.1.3",
         "html-minifier": "4.0.0",
-        "includeit": "1.4.0",
+        "includeit": "1.5.0",
         "jszip": "3.2.1",
         "less": "3.9.0",
         "minimist": "1.2.0",
         "mkdirp": "0.5.1",
         "pug": "2.0.3",
         "rimraf": "2.6.3",
-        "uglify-js": "3.5.3",
+        "uglify-js": "3.5.6",
         "watch": "1.0.2",
-        "webpack": "4.29.6"
+        "webpack": "4.30.0"
       },
       "dependencies": {
+        "@babel/core": {
+          "version": "7.4.3",
+          "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.4.3.tgz",
+          "integrity": "sha512-oDpASqKFlbspQfzAE7yaeTmdljSH2ADIvBlb0RwbStltTuWa0+7CCI1fYVINNv9saHPa1W7oaKeuNuKj+RQCvA==",
+          "dev": true,
+          "requires": {
+            "@babel/code-frame": "^7.0.0",
+            "@babel/generator": "^7.4.0",
+            "@babel/helpers": "^7.4.3",
+            "@babel/parser": "^7.4.3",
+            "@babel/template": "^7.4.0",
+            "@babel/traverse": "^7.4.3",
+            "@babel/types": "^7.4.0",
+            "convert-source-map": "^1.1.0",
+            "debug": "^4.1.0",
+            "json5": "^2.1.0",
+            "lodash": "^4.17.11",
+            "resolve": "^1.3.2",
+            "semver": "^5.4.1",
+            "source-map": "^0.5.0"
+          }
+        },
+        "@babel/preset-env": {
+          "version": "7.4.3",
+          "resolved": "https://registry.npmjs.org/@babel/preset-env/-/preset-env-7.4.3.tgz",
+          "integrity": "sha512-FYbZdV12yHdJU5Z70cEg0f6lvtpZ8jFSDakTm7WXeJbLXh4R0ztGEu/SW7G1nJ2ZvKwDhz8YrbA84eYyprmGqw==",
+          "dev": true,
+          "requires": {
+            "@babel/helper-module-imports": "^7.0.0",
+            "@babel/helper-plugin-utils": "^7.0.0",
+            "@babel/plugin-proposal-async-generator-functions": "^7.2.0",
+            "@babel/plugin-proposal-json-strings": "^7.2.0",
+            "@babel/plugin-proposal-object-rest-spread": "^7.4.3",
+            "@babel/plugin-proposal-optional-catch-binding": "^7.2.0",
+            "@babel/plugin-proposal-unicode-property-regex": "^7.4.0",
+            "@babel/plugin-syntax-async-generators": "^7.2.0",
+            "@babel/plugin-syntax-json-strings": "^7.2.0",
+            "@babel/plugin-syntax-object-rest-spread": "^7.2.0",
+            "@babel/plugin-syntax-optional-catch-binding": "^7.2.0",
+            "@babel/plugin-transform-arrow-functions": "^7.2.0",
+            "@babel/plugin-transform-async-to-generator": "^7.4.0",
+            "@babel/plugin-transform-block-scoped-functions": "^7.2.0",
+            "@babel/plugin-transform-block-scoping": "^7.4.0",
+            "@babel/plugin-transform-classes": "^7.4.3",
+            "@babel/plugin-transform-computed-properties": "^7.2.0",
+            "@babel/plugin-transform-destructuring": "^7.4.3",
+            "@babel/plugin-transform-dotall-regex": "^7.4.3",
+            "@babel/plugin-transform-duplicate-keys": "^7.2.0",
+            "@babel/plugin-transform-exponentiation-operator": "^7.2.0",
+            "@babel/plugin-transform-for-of": "^7.4.3",
+            "@babel/plugin-transform-function-name": "^7.4.3",
+            "@babel/plugin-transform-literals": "^7.2.0",
+            "@babel/plugin-transform-member-expression-literals": "^7.2.0",
+            "@babel/plugin-transform-modules-amd": "^7.2.0",
+            "@babel/plugin-transform-modules-commonjs": "^7.4.3",
+            "@babel/plugin-transform-modules-systemjs": "^7.4.0",
+            "@babel/plugin-transform-modules-umd": "^7.2.0",
+            "@babel/plugin-transform-named-capturing-groups-regex": "^7.4.2",
+            "@babel/plugin-transform-new-target": "^7.4.0",
+            "@babel/plugin-transform-object-super": "^7.2.0",
+            "@babel/plugin-transform-parameters": "^7.4.3",
+            "@babel/plugin-transform-property-literals": "^7.2.0",
+            "@babel/plugin-transform-regenerator": "^7.4.3",
+            "@babel/plugin-transform-reserved-words": "^7.2.0",
+            "@babel/plugin-transform-shorthand-properties": "^7.2.0",
+            "@babel/plugin-transform-spread": "^7.2.0",
+            "@babel/plugin-transform-sticky-regex": "^7.2.0",
+            "@babel/plugin-transform-template-literals": "^7.2.0",
+            "@babel/plugin-transform-typeof-symbol": "^7.2.0",
+            "@babel/plugin-transform-unicode-regex": "^7.4.3",
+            "@babel/types": "^7.4.0",
+            "browserslist": "^4.5.2",
+            "core-js-compat": "^3.0.0",
+            "invariant": "^2.2.2",
+            "js-levenshtein": "^1.1.3",
+            "semver": "^5.5.0"
+          }
+        },
+        "escape-string-regexp": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-2.0.0.tgz",
+          "integrity": "sha512-UpzcLCXolUWcNu5HtVMHYdXJjArjsF9C0aNnquZYY4uW/Vu0miy5YoWvbV345HauVvcAUnpRuhMMcqTcGOY2+w==",
+          "dev": true
+        },
         "minimist": {
           "version": "1.2.0",
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
@@ -3637,9 +3720,9 @@
       "dev": true
     },
     "includeit": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/includeit/-/includeit-1.4.0.tgz",
-      "integrity": "sha512-ixIXHq47J/4sMFWmK39LZDcN6LMoDQm3+cO1A8giifNLNlTLkUzbx0y4Gncye+c6Qfm6AJ4ZvETx0Tibf33dFA==",
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/includeit/-/includeit-1.5.0.tgz",
+      "integrity": "sha512-NaUSLSbfF7DX0VBygb4RgrXqdc+Eh4Ewr/wbAqj3EwlqhkyRD3qvwDOn0FNgdOmdtINo03kSAoHKTNBgtLmeSA==",
       "dev": true,
       "requires": {
         "glob": "7.1.3"
@@ -4279,20 +4362,20 @@
       "optional": true
     },
     "mime-db": {
-      "version": "1.38.0",
-      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.38.0.tgz",
-      "integrity": "sha512-bqVioMFFzc2awcdJZIzR3HjZFX20QhilVS7hytkKrv7xFAn8bM1gzc/FOX2awLISvWe0PV8ptFKcon+wZ5qYkg==",
+      "version": "1.40.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.40.0.tgz",
+      "integrity": "sha512-jYdeOMPy9vnxEqFRRo6ZvTZ8d9oPb+k18PKoYNYUe2stVEBPPwsln/qWzdbmaIvnhZ9v2P+CuecK+fpUfsV2mA==",
       "dev": true,
       "optional": true
     },
     "mime-types": {
-      "version": "2.1.22",
-      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.22.tgz",
-      "integrity": "sha512-aGl6TZGnhm/li6F7yx82bJiBZwgiEa4Hf6CNr8YO+r5UHr53tSTYZb102zyU50DOWWKeOv0uQLRL0/9EiKWCog==",
+      "version": "2.1.24",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.24.tgz",
+      "integrity": "sha512-WaFHS3MCl5fapm3oLxU4eYDw77IQM2ACcxQ9RIxfaC3ooc6PFuBMGZZsYpvoXS5D5QTWPieo1jjLdAm3TBP3cQ==",
       "dev": true,
       "optional": true,
       "requires": {
-        "mime-db": "~1.38.0"
+        "mime-db": "1.40.0"
       }
     },
     "mimic-fn": {
@@ -4503,9 +4586,9 @@
       }
     },
     "node-releases": {
-      "version": "1.1.14",
-      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.14.tgz",
-      "integrity": "sha512-d58EpVZRhQE60kWiWUaaPlK9dyC4zg3ZoMcHcky2d4hDksyQj0rUozwInOl0C66mBsqo01Tuns8AvxnL5S7PKg==",
+      "version": "1.1.17",
+      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.17.tgz",
+      "integrity": "sha512-/SCjetyta1m7YXLgtACZGDYJdCSIBAWorDWkGCGZlydP2Ll7J48l7j/JxNYZ+xsgSPbWfdulVS/aY+GdjUsQ7Q==",
       "dev": true,
       "requires": {
         "semver": "^5.3.0"
@@ -5088,6 +5171,12 @@
       "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
       "dev": true
     },
+    "qrcode-generator": {
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/qrcode-generator/-/qrcode-generator-1.4.3.tgz",
+      "integrity": "sha512-++rVRvMRq5BlHfmAafl8a4ppUntzUxCCUTT2t0siUgqKwdnqRzY8IH6f6WSX5dZUhD2Ul5/MIKuTJddflwrGzw==",
+      "dev": true
+    },
     "qs": {
       "version": "6.5.2",
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
@@ -5193,9 +5282,9 @@
       }
     },
     "regexp-tree": {
-      "version": "0.1.5",
-      "resolved": "https://registry.npmjs.org/regexp-tree/-/regexp-tree-0.1.5.tgz",
-      "integrity": "sha512-nUmxvfJyAODw+0B13hj8CFVAxhe7fDEAgJgaotBu3nnR+IgGgZq59YedJP5VYTlkEfqjuK6TuRpnymKdatLZfQ==",
+      "version": "0.1.6",
+      "resolved": "https://registry.npmjs.org/regexp-tree/-/regexp-tree-0.1.6.tgz",
+      "integrity": "sha512-LFrA98Dw/heXqDojz7qKFdygZmFoiVlvE1Zp7Cq2cvF+ZA+03Gmhy0k0PQlsC1jvHPiTUSs+pDHEuSWv6+6D7w==",
       "dev": true
     },
     "regexpp": {
@@ -5295,9 +5384,9 @@
       }
     },
     "resolve": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.10.0.tgz",
-      "integrity": "sha512-3sUr9aq5OfSg2S9pNtPA9hL1FVEAjvfOC4leW0SNf/mpnaakz2a9femSd6LqAww2RaFctwyf1lCqnTHuF1rxDg==",
+      "version": "1.10.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.10.1.tgz",
+      "integrity": "sha512-KuIe4mf++td/eFb6wkaPbMDnP6kObCaEtIDuHOUED6MNUo4K670KZUHuuvYPZDxNF0WVLw49n06M2m2dXphEzA==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -5425,9 +5514,9 @@
       "dev": true
     },
     "serialize-javascript": {
-      "version": "1.6.1",
-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-1.6.1.tgz",
-      "integrity": "sha512-A5MOagrPFga4YaKQSWHryl7AXvbQkEqpw4NNYMTNYUNV51bA8ABHgYFpqKx+YFFrw59xMV1qGH1R4AgoNIVgCw==",
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-1.7.0.tgz",
+      "integrity": "sha512-ke8UG8ulpFOxO8f8gRYabHQe/ZntKlcig2Mp+8+URDP1D8vJZ0KUt7LYo07q25Z/+JVSgpr/cui9PIp5H6/+nA==",
       "dev": true
     },
     "set-immediate-shim": {
@@ -6067,21 +6156,15 @@
       "dev": true
     },
     "uglify-js": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.5.3.tgz",
-      "integrity": "sha512-rIQPT2UMDnk4jRX+w4WO84/pebU2jiLsjgIyrCktYgSvx28enOE3iYQMr+BD1rHiitWnDmpu0cY/LfIEpKcjcw==",
+      "version": "3.5.6",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.5.6.tgz",
+      "integrity": "sha512-YDKRX8F0Y+Jr7LhoVk0n4G7ltR3Y7qFAj+DtVBthlOgCcIj1hyMigCfousVfn9HKmvJ+qiFlLDwaHx44/e5ZKw==",
       "dev": true,
       "requires": {
-        "commander": "~2.19.0",
+        "commander": "~2.20.0",
         "source-map": "~0.6.1"
       },
       "dependencies": {
-        "commander": {
-          "version": "2.19.0",
-          "resolved": "https://registry.npmjs.org/commander/-/commander-2.19.0.tgz",
-          "integrity": "sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg==",
-          "dev": true
-        },
         "source-map": {
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -6358,9 +6441,9 @@
       }
     },
     "webpack": {
-      "version": "4.29.6",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.29.6.tgz",
-      "integrity": "sha512-MwBwpiE1BQpMDkbnUUaW6K8RFZjljJHArC6tWQJoFm0oQtfoSebtg4Y7/QHnJ/SddtjYLHaKGX64CFjG5rehJw==",
+      "version": "4.30.0",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.30.0.tgz",
+      "integrity": "sha512-4hgvO2YbAFUhyTdlR4FNyt2+YaYBYHavyzjCMbZzgglo02rlKi/pcsEzwCuCpsn1ryzIl1cq/u8ArIKu8JBYMg==",
       "dev": true,
       "requires": {
         "@webassemblyjs/ast": "1.8.5",
diff --git a/package.json b/package.json
index c3c96bb..bbb6ae4 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "jquery-qrcode",
   "title": "jQuery.qrcode",
-  "version": "0.16.0",
+  "version": "0.17.0",
   "description": "Generate QR codes dynamically.",
   "homepage": "https://larsjung.de/jquery-qrcode/",
   "bugs": "https://github.com/lrsjng/jquery-qrcode/issues",
@@ -9,7 +9,7 @@
   "license": "MIT",
   "scripts": {
     "lint": "eslint .",
-    "build": "node ghu.js release",
+    "build": "node ghu release",
     "precommit": "npm run -s lint && npm run -s build"
   },
   "repository": {
@@ -17,11 +17,12 @@
     "url": "https://github.com/lrsjng/jquery-qrcode.git"
   },
   "devDependencies": {
-    "@babel/core": "7.4.3",
-    "@babel/preset-env": "7.4.3",
+    "@babel/core": "7.4.4",
+    "@babel/preset-env": "7.4.4",
     "eslint": "5.16.0",
-    "ghu": "0.17.0",
-    "jquery": "3.4.0"
+    "ghu": "0.20.0",
+    "jquery": "3.4.0",
+    "qrcode-generator": "1.4.3"
   },
   "engines": {
     "node": ">=8.0.0"
diff --git a/src/demo/dummy.png b/src/demo/dummy.png
index 192dfd2..207e622 100644
Binary files a/src/demo/dummy.png and b/src/demo/dummy.png differ
diff --git a/src/demo/scripts.js b/src/demo/scripts.js
index 2e35a34..8b42370 100644
--- a/src/demo/scripts.js
+++ b/src/demo/scripts.js
@@ -1,4 +1,4 @@
-const WIN = window; // eslint-disable-line no-undef
+const WIN = global.window;
 const JQ = WIN.jQuery;
 
 const GUI_VALUE_PAIRS = [
@@ -71,12 +71,7 @@ const on_img_input = () => {
     }
 };
 
-const download = () => {
-    JQ('#download').attr('href', JQ('#container canvas')[0].toDataURL('image/png'));
-};
-
 const init = () => {
-    JQ('#download').on('click', download);
     JQ('#image').on('change', on_img_input);
     JQ('input, textarea, select').on('input change', update);
     JQ(WIN).on('load', update);
diff --git a/src/demo/styles.css b/src/demo/styles.css
index de0c6ed..454f187 100644
--- a/src/demo/styles.css
+++ b/src/demo/styles.css
@@ -60,19 +60,6 @@ label {
     padding: 12px 4px 0 4px;
 }
 
-#download {
-    text-align: center;
-    font-weight: bold;
-    text-decoration: none;
-    display: block;
-    color: #555;
-    background-color: #ddd;
-    margin: 4px;
-    padding: 8px 0;
-    border: 1px solid #ddd;
-    cursor: pointer;
-}
-
 input, textarea, select {
     font-family: 'Ubuntu', 'sans';
     display: block;
diff --git a/src/jquery-qrcode.js b/src/jquery-qrcode.js
index ee74e2f..811ada1 100644
--- a/src/jquery-qrcode.js
+++ b/src/jquery-qrcode.js
@@ -1,6 +1,4 @@
-const VQRCODE = require('./vqrcode');
-
-const WIN = window; // eslint-disable-line no-undef
+const WIN = global.window;
 const JQ = WIN.jQuery;
 
 // Check if canvas is available in the browser (as Modernizr does)
@@ -15,7 +13,9 @@ const is_img_el = x => x && typeof x.tagName === 'string' && x.tagName.toUpperCa
 const create_qrcode = (text, level, version, quiet) => {
     const qr = {};
 
-    const vqr = VQRCODE(version, level);
+    const qr_gen = require('qrcode-generator');
+    qr_gen.stringToBytes = qr_gen.stringToBytesFuncs['UTF-8'];
+    const vqr = qr_gen(version, level);
     vqr.addData(text);
     vqr.make();
 
diff --git a/src/vqrcode.js b/src/vqrcode.js
deleted file mode 100644
index 8558778..0000000
--- a/src/vqrcode.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// @include "../vendor/qrcode.js"
-// @include "../vendor/qrcode_UTF8.js"
diff --git a/vendor/qrcode.js b/vendor/qrcode.js
deleted file mode 100644
index b68d004..0000000
--- a/vendor/qrcode.js
+++ /dev/null
@@ -1,1824 +0,0 @@
-//---------------------------------------------------------------------
-//
-// QR Code Generator for JavaScript
-//
-// Copyright (c) 2009 Kazuhiko Arase
-//
-// URL: http://www.d-project.com/
-//
-// Licensed under the MIT license:
-//  http://www.opensource.org/licenses/mit-license.php
-//
-// The word 'QR Code' is registered trademark of
-// DENSO WAVE INCORPORATED
-//  http://www.denso-wave.com/qrcode/faqpatent-e.html
-//
-//---------------------------------------------------------------------
-
-var qrcode = function() {
-
-  //---------------------------------------------------------------------
-  // qrcode
-  //---------------------------------------------------------------------
-
-  /**
-   * qrcode
-   * @param typeNumber 1 to 40
-   * @param errorCorrectLevel 'L','M','Q','H'
-   */
-  var qrcode = function(typeNumber, errorCorrectLevel) {
-
-    var PAD0 = 0xEC;
-    var PAD1 = 0x11;
-
-    var _typeNumber = typeNumber;
-    var _errorCorrectLevel = QRErrorCorrectLevel[errorCorrectLevel];
-    var _modules = null;
-    var _moduleCount = 0;
-    var _dataCache = null;
-    var _dataList = new Array();
-
-    var _this = {};
-
-    var makeImpl = function(test, maskPattern) {
-
-      _moduleCount = _typeNumber * 4 + 17;
-      _modules = function(moduleCount) {
-        var modules = new Array(moduleCount);
-        for (var row = 0; row < moduleCount; row += 1) {
-          modules[row] = new Array(moduleCount);
-          for (var col = 0; col < moduleCount; col += 1) {
-            modules[row][col] = null;
-          }
-        }
-        return modules;
-      }(_moduleCount);
-
-      setupPositionProbePattern(0, 0);
-      setupPositionProbePattern(_moduleCount - 7, 0);
-      setupPositionProbePattern(0, _moduleCount - 7);
-      setupPositionAdjustPattern();
-      setupTimingPattern();
-      setupTypeInfo(test, maskPattern);
-
-      if (_typeNumber >= 7) {
-        setupTypeNumber(test);
-      }
-
-      if (_dataCache == null) {
-        _dataCache = createData(_typeNumber, _errorCorrectLevel, _dataList);
-      }
-
-      mapData(_dataCache, maskPattern);
-    };
-
-    var setupPositionProbePattern = function(row, col) {
-
-      for (var r = -1; r <= 7; r += 1) {
-
-        if (row + r <= -1 || _moduleCount <= row + r) continue;
-
-        for (var c = -1; c <= 7; c += 1) {
-
-          if (col + c <= -1 || _moduleCount <= col + c) continue;
-
-          if ( (0 <= r && r <= 6 && (c == 0 || c == 6) )
-              || (0 <= c && c <= 6 && (r == 0 || r == 6) )
-              || (2 <= r && r <= 4 && 2 <= c && c <= 4) ) {
-            _modules[row + r][col + c] = true;
-          } else {
-            _modules[row + r][col + c] = false;
-          }
-        }
-      }
-    };
-
-    var getBestMaskPattern = function() {
-
-      var minLostPoint = 0;
-      var pattern = 0;
-
-      for (var i = 0; i < 8; i += 1) {
-
-        makeImpl(true, i);
-
-        var lostPoint = QRUtil.getLostPoint(_this);
-
-        if (i == 0 || minLostPoint > lostPoint) {
-          minLostPoint = lostPoint;
-          pattern = i;
-        }
-      }
-
-      return pattern;
-    };
-
-    var setupTimingPattern = function() {
-
-      for (var r = 8; r < _moduleCount - 8; r += 1) {
-        if (_modules[r][6] != null) {
-          continue;
-        }
-        _modules[r][6] = (r % 2 == 0);
-      }
-
-      for (var c = 8; c < _moduleCount - 8; c += 1) {
-        if (_modules[6][c] != null) {
-          continue;
-        }
-        _modules[6][c] = (c % 2 == 0);
-      }
-    };
-
-    var setupPositionAdjustPattern = function() {
-
-      var pos = QRUtil.getPatternPosition(_typeNumber);
-
-      for (var i = 0; i < pos.length; i += 1) {
-
-        for (var j = 0; j < pos.length; j += 1) {
-
-          var row = pos[i];
-          var col = pos[j];
-
-          if (_modules[row][col] != null) {
-            continue;
-          }
-
-          for (var r = -2; r <= 2; r += 1) {
-
-            for (var c = -2; c <= 2; c += 1) {
-
-              if (r == -2 || r == 2 || c == -2 || c == 2
-                  || (r == 0 && c == 0) ) {
-                _modules[row + r][col + c] = true;
-              } else {
-                _modules[row + r][col + c] = false;
-              }
-            }
-          }
-        }
-      }
-    };
-
-    var setupTypeNumber = function(test) {
-
-      var bits = QRUtil.getBCHTypeNumber(_typeNumber);
-
-      for (var i = 0; i < 18; i += 1) {
-        var mod = (!test && ( (bits >> i) & 1) == 1);
-        _modules[Math.floor(i / 3)][i % 3 + _moduleCount - 8 - 3] = mod;
-      }
-
-      for (var i = 0; i < 18; i += 1) {
-        var mod = (!test && ( (bits >> i) & 1) == 1);
-        _modules[i % 3 + _moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
-      }
-    };
-
-    var setupTypeInfo = function(test, maskPattern) {
-
-      var data = (_errorCorrectLevel << 3) | maskPattern;
-      var bits = QRUtil.getBCHTypeInfo(data);
-
-      // vertical
-      for (var i = 0; i < 15; i += 1) {
-
-        var mod = (!test && ( (bits >> i) & 1) == 1);
-
-        if (i < 6) {
-          _modules[i][8] = mod;
-        } else if (i < 8) {
-          _modules[i + 1][8] = mod;
-        } else {
-          _modules[_moduleCount - 15 + i][8] = mod;
-        }
-      }
-
-      // horizontal
-      for (var i = 0; i < 15; i += 1) {
-
-        var mod = (!test && ( (bits >> i) & 1) == 1);
-
-        if (i < 8) {
-          _modules[8][_moduleCount - i - 1] = mod;
-        } else if (i < 9) {
-          _modules[8][15 - i - 1 + 1] = mod;
-        } else {
-          _modules[8][15 - i - 1] = mod;
-        }
-      }
-
-      // fixed module
-      _modules[_moduleCount - 8][8] = (!test);
-    };
-
-    var mapData = function(data, maskPattern) {
-
-      var inc = -1;
-      var row = _moduleCount - 1;
-      var bitIndex = 7;
-      var byteIndex = 0;
-      var maskFunc = QRUtil.getMaskFunction(maskPattern);
-
-      for (var col = _moduleCount - 1; col > 0; col -= 2) {
-
-        if (col == 6) col -= 1;
-
-        while (true) {
-
-          for (var c = 0; c < 2; c += 1) {
-
-            if (_modules[row][col - c] == null) {
-
-              var dark = false;
-
-              if (byteIndex < data.length) {
-                dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1);
-              }
-
-              var mask = maskFunc(row, col - c);
-
-              if (mask) {
-                dark = !dark;
-              }
-
-              _modules[row][col - c] = dark;
-              bitIndex -= 1;
-
-              if (bitIndex == -1) {
-                byteIndex += 1;
-                bitIndex = 7;
-              }
-            }
-          }
-
-          row += inc;
-
-          if (row < 0 || _moduleCount <= row) {
-            row -= inc;
-            inc = -inc;
-            break;
-          }
-        }
-      }
-    };
-
-    var createBytes = function(buffer, rsBlocks) {
-
-      var offset = 0;
-
-      var maxDcCount = 0;
-      var maxEcCount = 0;
-
-      var dcdata = new Array(rsBlocks.length);
-      var ecdata = new Array(rsBlocks.length);
-
-      for (var r = 0; r < rsBlocks.length; r += 1) {
-
-        var dcCount = rsBlocks[r].dataCount;
-        var ecCount = rsBlocks[r].totalCount - dcCount;
-
-        maxDcCount = Math.max(maxDcCount, dcCount);
-        maxEcCount = Math.max(maxEcCount, ecCount);
-
-        dcdata[r] = new Array(dcCount);
-
-        for (var i = 0; i < dcdata[r].length; i += 1) {
-          dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset];
-        }
-        offset += dcCount;
-
-        var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
-        var rawPoly = qrPolynomial(dcdata[r], rsPoly.getLength() - 1);
-
-        var modPoly = rawPoly.mod(rsPoly);
-        ecdata[r] = new Array(rsPoly.getLength() - 1);
-        for (var i = 0; i < ecdata[r].length; i += 1) {
-          var modIndex = i + modPoly.getLength() - ecdata[r].length;
-          ecdata[r][i] = (modIndex >= 0)? modPoly.getAt(modIndex) : 0;
-        }
-      }
-
-      var totalCodeCount = 0;
-      for (var i = 0; i < rsBlocks.length; i += 1) {
-        totalCodeCount += rsBlocks[i].totalCount;
-      }
-
-      var data = new Array(totalCodeCount);
-      var index = 0;
-
-      for (var i = 0; i < maxDcCount; i += 1) {
-        for (var r = 0; r < rsBlocks.length; r += 1) {
-          if (i < dcdata[r].length) {
-            data[index] = dcdata[r][i];
-            index += 1;
-          }
-        }
-      }
-
-      for (var i = 0; i < maxEcCount; i += 1) {
-        for (var r = 0; r < rsBlocks.length; r += 1) {
-          if (i < ecdata[r].length) {
-            data[index] = ecdata[r][i];
-            index += 1;
-          }
-        }
-      }
-
-      return data;
-    };
-
-    var createData = function(typeNumber, errorCorrectLevel, dataList) {
-
-      var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
-
-      var buffer = qrBitBuffer();
-
-      for (var i = 0; i < dataList.length; i += 1) {
-        var data = dataList[i];
-        buffer.put(data.getMode(), 4);
-        buffer.put(data.getLength(), QRUtil.getLengthInBits(data.getMode(), typeNumber) );
-        data.write(buffer);
-      }
-
-      // calc num max data.
-      var totalDataCount = 0;
-      for (var i = 0; i < rsBlocks.length; i += 1) {
-        totalDataCount += rsBlocks[i].dataCount;
-      }
-
-      if (buffer.getLengthInBits() > totalDataCount * 8) {
-        throw new Error('code length overflow. ('
-          + buffer.getLengthInBits()
-          + '>'
-          + totalDataCount * 8
-          + ')');
-      }
-
-      // end code
-      if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
-        buffer.put(0, 4);
-      }
-
-      // padding
-      while (buffer.getLengthInBits() % 8 != 0) {
-        buffer.putBit(false);
-      }
-
-      // padding
-      while (true) {
-
-        if (buffer.getLengthInBits() >= totalDataCount * 8) {
-          break;
-        }
-        buffer.put(PAD0, 8);
-
-        if (buffer.getLengthInBits() >= totalDataCount * 8) {
-          break;
-        }
-        buffer.put(PAD1, 8);
-      }
-
-      return createBytes(buffer, rsBlocks);
-    };
-
-    _this.addData = function(data) {
-      var newData = qr8BitByte(data);
-      _dataList.push(newData);
-      _dataCache = null;
-    };
-
-    _this.isDark = function(row, col) {
-      if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) {
-        throw new Error(row + ',' + col);
-      }
-      return _modules[row][col];
-    };
-
-    _this.getModuleCount = function() {
-      return _moduleCount;
-    };
-
-    _this.make = function() {
-      makeImpl(false, getBestMaskPattern() );
-    };
-
-    _this.createTableTag = function(cellSize, margin) {
-
-      cellSize = cellSize || 2;
-      margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
-
-      var qrHtml = '';
-
-      qrHtml += '<table style="';
-      qrHtml += ' border-width: 0px; border-style: none;';
-      qrHtml += ' border-collapse: collapse;';
-      qrHtml += ' padding: 0px; margin: ' + margin + 'px;';
-      qrHtml += '">';
-      qrHtml += '<tbody>';
-
-      for (var r = 0; r < _this.getModuleCount(); r += 1) {
-
-        qrHtml += '<tr>';
-
-        for (var c = 0; c < _this.getModuleCount(); c += 1) {
-          qrHtml += '<td style="';
-          qrHtml += ' border-width: 0px; border-style: none;';
-          qrHtml += ' border-collapse: collapse;';
-          qrHtml += ' padding: 0px; margin: 0px;';
-          qrHtml += ' width: ' + cellSize + 'px;';
-          qrHtml += ' height: ' + cellSize + 'px;';
-          qrHtml += ' background-color: ';
-          qrHtml += _this.isDark(r, c)? '#000000' : '#ffffff';
-          qrHtml += ';';
-          qrHtml += '"/>';
-        }
-
-        qrHtml += '</tr>';
-      }
-
-      qrHtml += '</tbody>';
-      qrHtml += '</table>';
-
-      return qrHtml;
-    };
-
-    _this.createImgTag = function(cellSize, margin) {
-
-      cellSize = cellSize || 2;
-      margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
-
-      var size = _this.getModuleCount() * cellSize + margin * 2;
-      var min = margin;
-      var max = size - margin;
-
-      return createImgTag(size, size, function(x, y) {
-        if (min <= x && x < max && min <= y && y < max) {
-          var c = Math.floor( (x - min) / cellSize);
-          var r = Math.floor( (y - min) / cellSize);
-          return _this.isDark(r, c)? 0 : 1;
-        } else {
-          return 1;
-        }
-      } );
-    };
-
-    return _this;
-  };
-
-  //---------------------------------------------------------------------
-  // qrcode.stringToBytes
-  //---------------------------------------------------------------------
-
-  qrcode.stringToBytes = function(s) {
-    var bytes = new Array();
-    for (var i = 0; i < s.length; i += 1) {
-      var c = s.charCodeAt(i);
-      bytes.push(c & 0xff);
-    }
-    return bytes;
-  };
-
-  //---------------------------------------------------------------------
-  // qrcode.createStringToBytes
-  //---------------------------------------------------------------------
-
-  /**
-   * @param unicodeData base64 string of byte array.
-   * [16bit Unicode],[16bit Bytes], ...
-   * @param numChars
-   */
-  qrcode.createStringToBytes = function(unicodeData, numChars) {
-
-    // create conversion map.
-
-    var unicodeMap = function() {
-
-      var bin = base64DecodeInputStream(unicodeData);
-      var read = function() {
-        var b = bin.read();
-        if (b == -1) throw new Error();
-        return b;
-      };
-
-      var count = 0;
-      var unicodeMap = {};
-      while (true) {
-        var b0 = bin.read();
-        if (b0 == -1) break;
-        var b1 = read();
-        var b2 = read();
-        var b3 = read();
-        var k = String.fromCharCode( (b0 << 8) | b1);
-        var v = (b2 << 8) | b3;
-        unicodeMap[k] = v;
-        count += 1;
-      }
-      if (count != numChars) {
-        throw new Error(count + ' != ' + numChars);
-      }
-
-      return unicodeMap;
-    }();
-
-    var unknownChar = '?'.charCodeAt(0);
-
-    return function(s) {
-      var bytes = new Array();
-      for (var i = 0; i < s.length; i += 1) {
-        var c = s.charCodeAt(i);
-        if (c < 128) {
-          bytes.push(c);
-        } else {
-          var b = unicodeMap[s.charAt(i)];
-          if (typeof b == 'number') {
-            if ( (b & 0xff) == b) {
-              // 1byte
-              bytes.push(b);
-            } else {
-              // 2bytes
-              bytes.push(b >>> 8);
-              bytes.push(b & 0xff);
-            }
-          } else {
-            bytes.push(unknownChar);
-          }
-        }
-      }
-      return bytes;
-    };
-  };
-
-  //---------------------------------------------------------------------
-  // QRMode
-  //---------------------------------------------------------------------
-
-  var QRMode = {
-    MODE_NUMBER :    1 << 0,
-    MODE_ALPHA_NUM : 1 << 1,
-    MODE_8BIT_BYTE : 1 << 2,
-    MODE_KANJI :     1 << 3
-  };
-
-  //---------------------------------------------------------------------
-  // QRErrorCorrectLevel
-  //---------------------------------------------------------------------
-
-  var QRErrorCorrectLevel = {
-    L : 1,
-    M : 0,
-    Q : 3,
-    H : 2
-  };
-
-  //---------------------------------------------------------------------
-  // QRMaskPattern
-  //---------------------------------------------------------------------
-
-  var QRMaskPattern = {
-    PATTERN000 : 0,
-    PATTERN001 : 1,
-    PATTERN010 : 2,
-    PATTERN011 : 3,
-    PATTERN100 : 4,
-    PATTERN101 : 5,
-    PATTERN110 : 6,
-    PATTERN111 : 7
-  };
-
-  //---------------------------------------------------------------------
-  // QRUtil
-  //---------------------------------------------------------------------
-
-  var QRUtil = function() {
-
-    var PATTERN_POSITION_TABLE = [
-      [],
-      [6, 18],
-      [6, 22],
-      [6, 26],
-      [6, 30],
-      [6, 34],
-      [6, 22, 38],
-      [6, 24, 42],
-      [6, 26, 46],
-      [6, 28, 50],
-      [6, 30, 54],
-      [6, 32, 58],
-      [6, 34, 62],
-      [6, 26, 46, 66],
-      [6, 26, 48, 70],
-      [6, 26, 50, 74],
-      [6, 30, 54, 78],
-      [6, 30, 56, 82],
-      [6, 30, 58, 86],
-      [6, 34, 62, 90],
-      [6, 28, 50, 72, 94],
-      [6, 26, 50, 74, 98],
-      [6, 30, 54, 78, 102],
-      [6, 28, 54, 80, 106],
-      [6, 32, 58, 84, 110],
-      [6, 30, 58, 86, 114],
-      [6, 34, 62, 90, 118],
-      [6, 26, 50, 74, 98, 122],
-      [6, 30, 54, 78, 102, 126],
-      [6, 26, 52, 78, 104, 130],
-      [6, 30, 56, 82, 108, 134],
-      [6, 34, 60, 86, 112, 138],
-      [6, 30, 58, 86, 114, 142],
-      [6, 34, 62, 90, 118, 146],
-      [6, 30, 54, 78, 102, 126, 150],
-      [6, 24, 50, 76, 102, 128, 154],
-      [6, 28, 54, 80, 106, 132, 158],
-      [6, 32, 58, 84, 110, 136, 162],
-      [6, 26, 54, 82, 110, 138, 166],
-      [6, 30, 58, 86, 114, 142, 170]
-    ];
-    var G15 = (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0);
-    var G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0);
-    var G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1);
-
-    var _this = {};
-
-    var getBCHDigit = function(data) {
-      var digit = 0;
-      while (data != 0) {
-        digit += 1;
-        data >>>= 1;
-      }
-      return digit;
-    };
-
-    _this.getBCHTypeInfo = function(data) {
-      var d = data << 10;
-      while (getBCHDigit(d) - getBCHDigit(G15) >= 0) {
-        d ^= (G15 << (getBCHDigit(d) - getBCHDigit(G15) ) );
-      }
-      return ( (data << 10) | d) ^ G15_MASK;
-    };
-
-    _this.getBCHTypeNumber = function(data) {
-      var d = data << 12;
-      while (getBCHDigit(d) - getBCHDigit(G18) >= 0) {
-        d ^= (G18 << (getBCHDigit(d) - getBCHDigit(G18) ) );
-      }
-      return (data << 12) | d;
-    };
-
-    _this.getPatternPosition = function(typeNumber) {
-      return PATTERN_POSITION_TABLE[typeNumber - 1];
-    };
-
-    _this.getMaskFunction = function(maskPattern) {
-
-      switch (maskPattern) {
-
-      case QRMaskPattern.PATTERN000 :
-        return function(i, j) { return (i + j) % 2 == 0; };
-      case QRMaskPattern.PATTERN001 :
-        return function(i, j) { return i % 2 == 0; };
-      case QRMaskPattern.PATTERN010 :
-        return function(i, j) { return j % 3 == 0; };
-      case QRMaskPattern.PATTERN011 :
-        return function(i, j) { return (i + j) % 3 == 0; };
-      case QRMaskPattern.PATTERN100 :
-        return function(i, j) { return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0; };
-      case QRMaskPattern.PATTERN101 :
-        return function(i, j) { return (i * j) % 2 + (i * j) % 3 == 0; };
-      case QRMaskPattern.PATTERN110 :
-        return function(i, j) { return ( (i * j) % 2 + (i * j) % 3) % 2 == 0; };
-      case QRMaskPattern.PATTERN111 :
-        return function(i, j) { return ( (i * j) % 3 + (i + j) % 2) % 2 == 0; };
-
-      default :
-        throw new Error('bad maskPattern:' + maskPattern);
-      }
-    };
-
-    _this.getErrorCorrectPolynomial = function(errorCorrectLength) {
-      var a = qrPolynomial([1], 0);
-      for (var i = 0; i < errorCorrectLength; i += 1) {
-        a = a.multiply(qrPolynomial([1, QRMath.gexp(i)], 0) );
-      }
-      return a;
-    };
-
-    _this.getLengthInBits = function(mode, type) {
-
-      if (1 <= type && type < 10) {
-
-        // 1 - 9
-
-        switch(mode) {
-        case QRMode.MODE_NUMBER    : return 10;
-        case QRMode.MODE_ALPHA_NUM : return 9;
-        case QRMode.MODE_8BIT_BYTE : return 8;
-        case QRMode.MODE_KANJI     : return 8;
-        default :
-          throw new Error('mode:' + mode);
-        }
-
-      } else if (type < 27) {
-
-        // 10 - 26
-
-        switch(mode) {
-        case QRMode.MODE_NUMBER    : return 12;
-        case QRMode.MODE_ALPHA_NUM : return 11;
-        case QRMode.MODE_8BIT_BYTE : return 16;
-        case QRMode.MODE_KANJI     : return 10;
-        default :
-          throw new Error('mode:' + mode);
-        }
-
-      } else if (type < 41) {
-
-        // 27 - 40
-
-        switch(mode) {
-        case QRMode.MODE_NUMBER    : return 14;
-        case QRMode.MODE_ALPHA_NUM : return 13;
-        case QRMode.MODE_8BIT_BYTE : return 16;
-        case QRMode.MODE_KANJI     : return 12;
-        default :
-          throw new Error('mode:' + mode);
-        }
-
-      } else {
-        throw new Error('type:' + type);
-      }
-    };
-
-    _this.getLostPoint = function(qrcode) {
-
-      var moduleCount = qrcode.getModuleCount();
-
-      var lostPoint = 0;
-
-      // LEVEL1
-
-      for (var row = 0; row < moduleCount; row += 1) {
-        for (var col = 0; col < moduleCount; col += 1) {
-
-          var sameCount = 0;
-          var dark = qrcode.isDark(row, col);
-
-          for (var r = -1; r <= 1; r += 1) {
-
-            if (row + r < 0 || moduleCount <= row + r) {
-              continue;
-            }
-
-            for (var c = -1; c <= 1; c += 1) {
-
-              if (col + c < 0 || moduleCount <= col + c) {
-                continue;
-              }
-
-              if (r == 0 && c == 0) {
-                continue;
-              }
-
-              if (dark == qrcode.isDark(row + r, col + c) ) {
-                sameCount += 1;
-              }
-            }
-          }
-
-          if (sameCount > 5) {
-            lostPoint += (3 + sameCount - 5);
-          }
-        }
-      };
-
-      // LEVEL2
-
-      for (var row = 0; row < moduleCount - 1; row += 1) {
-        for (var col = 0; col < moduleCount - 1; col += 1) {
-          var count = 0;
-          if (qrcode.isDark(row, col) ) count += 1;
-          if (qrcode.isDark(row + 1, col) ) count += 1;
-          if (qrcode.isDark(row, col + 1) ) count += 1;
-          if (qrcode.isDark(row + 1, col + 1) ) count += 1;
-          if (count == 0 || count == 4) {
-            lostPoint += 3;
-          }
-        }
-      }
-
-      // LEVEL3
-
-      for (var row = 0; row < moduleCount; row += 1) {
-        for (var col = 0; col < moduleCount - 6; col += 1) {
-          if (qrcode.isDark(row, col)
-              && !qrcode.isDark(row, col + 1)
-              &&  qrcode.isDark(row, col + 2)
-              &&  qrcode.isDark(row, col + 3)
-              &&  qrcode.isDark(row, col + 4)
-              && !qrcode.isDark(row, col + 5)
-              &&  qrcode.isDark(row, col + 6) ) {
-            lostPoint += 40;
-          }
-        }
-      }
-
-      for (var col = 0; col < moduleCount; col += 1) {
-        for (var row = 0; row < moduleCount - 6; row += 1) {
-          if (qrcode.isDark(row, col)
-              && !qrcode.isDark(row + 1, col)
-              &&  qrcode.isDark(row + 2, col)
-              &&  qrcode.isDark(row + 3, col)
-              &&  qrcode.isDark(row + 4, col)
-              && !qrcode.isDark(row + 5, col)
-              &&  qrcode.isDark(row + 6, col) ) {
-            lostPoint += 40;
-          }
-        }
-      }
-
-      // LEVEL4
-
-      var darkCount = 0;
-
-      for (var col = 0; col < moduleCount; col += 1) {
-        for (var row = 0; row < moduleCount; row += 1) {
-          if (qrcode.isDark(row, col) ) {
-            darkCount += 1;
-          }
-        }
-      }
-
-      var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
-      lostPoint += ratio * 10;
-
-      return lostPoint;
-    };
-
-    return _this;
-  }();
-
-  //---------------------------------------------------------------------
-  // QRMath
-  //---------------------------------------------------------------------
-
-  var QRMath = function() {
-
-    var EXP_TABLE = new Array(256);
-    var LOG_TABLE = new Array(256);
-
-    // initialize tables
-    for (var i = 0; i < 8; i += 1) {
-      EXP_TABLE[i] = 1 << i;
-    }
-    for (var i = 8; i < 256; i += 1) {
-      EXP_TABLE[i] = EXP_TABLE[i - 4]
-        ^ EXP_TABLE[i - 5]
-        ^ EXP_TABLE[i - 6]
-        ^ EXP_TABLE[i - 8];
-    }
-    for (var i = 0; i < 255; i += 1) {
-      LOG_TABLE[EXP_TABLE[i] ] = i;
-    }
-
-    var _this = {};
-
-    _this.glog = function(n) {
-
-      if (n < 1) {
-        throw new Error('glog(' + n + ')');
-      }
-
-      return LOG_TABLE[n];
-    };
-
-    _this.gexp = function(n) {
-
-      while (n < 0) {
-        n += 255;
-      }
-
-      while (n >= 256) {
-        n -= 255;
-      }
-
-      return EXP_TABLE[n];
-    };
-
-    return _this;
-  }();
-
-  //---------------------------------------------------------------------
-  // qrPolynomial
-  //---------------------------------------------------------------------
-
-  function qrPolynomial(num, shift) {
-
-    if (typeof num.length == 'undefined') {
-      throw new Error(num.length + '/' + shift);
-    }
-
-    var _num = function() {
-      var offset = 0;
-      while (offset < num.length && num[offset] == 0) {
-        offset += 1;
-      }
-      var _num = new Array(num.length - offset + shift);
-      for (var i = 0; i < num.length - offset; i += 1) {
-        _num[i] = num[i + offset];
-      }
-      return _num;
-    }();
-
-    var _this = {};
-
-    _this.getAt = function(index) {
-      return _num[index];
-    };
-
-    _this.getLength = function() {
-      return _num.length;
-    };
-
-    _this.multiply = function(e) {
-
-      var num = new Array(_this.getLength() + e.getLength() - 1);
-
-      for (var i = 0; i < _this.getLength(); i += 1) {
-        for (var j = 0; j < e.getLength(); j += 1) {
-          num[i + j] ^= QRMath.gexp(QRMath.glog(_this.getAt(i) ) + QRMath.glog(e.getAt(j) ) );
-        }
-      }
-
-      return qrPolynomial(num, 0);
-    };
-
-    _this.mod = function(e) {
-
-      if (_this.getLength() - e.getLength() < 0) {
-        return _this;
-      }
-
-      var ratio = QRMath.glog(_this.getAt(0) ) - QRMath.glog(e.getAt(0) );
-
-      var num = new Array(_this.getLength() );
-      for (var i = 0; i < _this.getLength(); i += 1) {
-        num[i] = _this.getAt(i);
-      }
-
-      for (var i = 0; i < e.getLength(); i += 1) {
-        num[i] ^= QRMath.gexp(QRMath.glog(e.getAt(i) ) + ratio);
-      }
-
-      // recursive call
-      return qrPolynomial(num, 0).mod(e);
-    };
-
-    return _this;
-  };
-
-  //---------------------------------------------------------------------
-  // QRRSBlock
-  //---------------------------------------------------------------------
-
-  var QRRSBlock = function() {
-
-    var RS_BLOCK_TABLE = [
-
-      // L
-      // M
-      // Q
-      // H
-
-      // 1
-      [1, 26, 19],
-      [1, 26, 16],
-      [1, 26, 13],
-      [1, 26, 9],
-
-      // 2
-      [1, 44, 34],
-      [1, 44, 28],
-      [1, 44, 22],
-      [1, 44, 16],
-
-      // 3
-      [1, 70, 55],
-      [1, 70, 44],
-      [2, 35, 17],
-      [2, 35, 13],
-
-      // 4
-      [1, 100, 80],
-      [2, 50, 32],
-      [2, 50, 24],
-      [4, 25, 9],
-
-      // 5
-      [1, 134, 108],
-      [2, 67, 43],
-      [2, 33, 15, 2, 34, 16],
-      [2, 33, 11, 2, 34, 12],
-
-      // 6
-      [2, 86, 68],
-      [4, 43, 27],
-      [4, 43, 19],
-      [4, 43, 15],
-
-      // 7
-      [2, 98, 78],
-      [4, 49, 31],
-      [2, 32, 14, 4, 33, 15],
-      [4, 39, 13, 1, 40, 14],
-
-      // 8
-      [2, 121, 97],
-      [2, 60, 38, 2, 61, 39],
-      [4, 40, 18, 2, 41, 19],
-      [4, 40, 14, 2, 41, 15],
-
-      // 9
-      [2, 146, 116],
-      [3, 58, 36, 2, 59, 37],
-      [4, 36, 16, 4, 37, 17],
-      [4, 36, 12, 4, 37, 13],
-
-      // 10
-      [2, 86, 68, 2, 87, 69],
-      [4, 69, 43, 1, 70, 44],
-      [6, 43, 19, 2, 44, 20],
-      [6, 43, 15, 2, 44, 16],
-
-      // 11
-      [4, 101, 81],
-      [1, 80, 50, 4, 81, 51],
-      [4, 50, 22, 4, 51, 23],
-      [3, 36, 12, 8, 37, 13],
-
-      // 12
-      [2, 116, 92, 2, 117, 93],
-      [6, 58, 36, 2, 59, 37],
-      [4, 46, 20, 6, 47, 21],
-      [7, 42, 14, 4, 43, 15],
-
-      // 13
-      [4, 133, 107],
-      [8, 59, 37, 1, 60, 38],
-      [8, 44, 20, 4, 45, 21],
-      [12, 33, 11, 4, 34, 12],
-
-      // 14
-      [3, 145, 115, 1, 146, 116],
-      [4, 64, 40, 5, 65, 41],
-      [11, 36, 16, 5, 37, 17],
-      [11, 36, 12, 5, 37, 13],
-
-      // 15
-      [5, 109, 87, 1, 110, 88],
-      [5, 65, 41, 5, 66, 42],
-      [5, 54, 24, 7, 55, 25],
-      [11, 36, 12, 7, 37, 13],
-
-      // 16
-      [5, 122, 98, 1, 123, 99],
-      [7, 73, 45, 3, 74, 46],
-      [15, 43, 19, 2, 44, 20],
-      [3, 45, 15, 13, 46, 16],
-
-      // 17
-      [1, 135, 107, 5, 136, 108],
-      [10, 74, 46, 1, 75, 47],
-      [1, 50, 22, 15, 51, 23],
-      [2, 42, 14, 17, 43, 15],
-
-      // 18
-      [5, 150, 120, 1, 151, 121],
-      [9, 69, 43, 4, 70, 44],
-      [17, 50, 22, 1, 51, 23],
-      [2, 42, 14, 19, 43, 15],
-
-      // 19
-      [3, 141, 113, 4, 142, 114],
-      [3, 70, 44, 11, 71, 45],
-      [17, 47, 21, 4, 48, 22],
-      [9, 39, 13, 16, 40, 14],
-
-      // 20
-      [3, 135, 107, 5, 136, 108],
-      [3, 67, 41, 13, 68, 42],
-      [15, 54, 24, 5, 55, 25],
-      [15, 43, 15, 10, 44, 16],
-
-      // 21
-      [4, 144, 116, 4, 145, 117],
-      [17, 68, 42],
-      [17, 50, 22, 6, 51, 23],
-      [19, 46, 16, 6, 47, 17],
-
-      // 22
-      [2, 139, 111, 7, 140, 112],
-      [17, 74, 46],
-      [7, 54, 24, 16, 55, 25],
-      [34, 37, 13],
-
-      // 23
-      [4, 151, 121, 5, 152, 122],
-      [4, 75, 47, 14, 76, 48],
-      [11, 54, 24, 14, 55, 25],
-      [16, 45, 15, 14, 46, 16],
-
-      // 24
-      [6, 147, 117, 4, 148, 118],
-      [6, 73, 45, 14, 74, 46],
-      [11, 54, 24, 16, 55, 25],
-      [30, 46, 16, 2, 47, 17],
-
-      // 25
-      [8, 132, 106, 4, 133, 107],
-      [8, 75, 47, 13, 76, 48],
-      [7, 54, 24, 22, 55, 25],
-      [22, 45, 15, 13, 46, 16],
-
-      // 26
-      [10, 142, 114, 2, 143, 115],
-      [19, 74, 46, 4, 75, 47],
-      [28, 50, 22, 6, 51, 23],
-      [33, 46, 16, 4, 47, 17],
-
-      // 27
-      [8, 152, 122, 4, 153, 123],
-      [22, 73, 45, 3, 74, 46],
-      [8, 53, 23, 26, 54, 24],
-      [12, 45, 15, 28, 46, 16],
-
-      // 28
-      [3, 147, 117, 10, 148, 118],
-      [3, 73, 45, 23, 74, 46],
-      [4, 54, 24, 31, 55, 25],
-      [11, 45, 15, 31, 46, 16],
-
-      // 29
-      [7, 146, 116, 7, 147, 117],
-      [21, 73, 45, 7, 74, 46],
-      [1, 53, 23, 37, 54, 24],
-      [19, 45, 15, 26, 46, 16],
-
-      // 30
-      [5, 145, 115, 10, 146, 116],
-      [19, 75, 47, 10, 76, 48],
-      [15, 54, 24, 25, 55, 25],
-      [23, 45, 15, 25, 46, 16],
-
-      // 31
-      [13, 145, 115, 3, 146, 116],
-      [2, 74, 46, 29, 75, 47],
-      [42, 54, 24, 1, 55, 25],
-      [23, 45, 15, 28, 46, 16],
-
-      // 32
-      [17, 145, 115],
-      [10, 74, 46, 23, 75, 47],
-      [10, 54, 24, 35, 55, 25],
-      [19, 45, 15, 35, 46, 16],
-
-      // 33
-      [17, 145, 115, 1, 146, 116],
-      [14, 74, 46, 21, 75, 47],
-      [29, 54, 24, 19, 55, 25],
-      [11, 45, 15, 46, 46, 16],
-
-      // 34
-      [13, 145, 115, 6, 146, 116],
-      [14, 74, 46, 23, 75, 47],
-      [44, 54, 24, 7, 55, 25],
-      [59, 46, 16, 1, 47, 17],
-
-      // 35
-      [12, 151, 121, 7, 152, 122],
-      [12, 75, 47, 26, 76, 48],
-      [39, 54, 24, 14, 55, 25],
-      [22, 45, 15, 41, 46, 16],
-
-      // 36
-      [6, 151, 121, 14, 152, 122],
-      [6, 75, 47, 34, 76, 48],
-      [46, 54, 24, 10, 55, 25],
-      [2, 45, 15, 64, 46, 16],
-
-      // 37
-      [17, 152, 122, 4, 153, 123],
-      [29, 74, 46, 14, 75, 47],
-      [49, 54, 24, 10, 55, 25],
-      [24, 45, 15, 46, 46, 16],
-
-      // 38
-      [4, 152, 122, 18, 153, 123],
-      [13, 74, 46, 32, 75, 47],
-      [48, 54, 24, 14, 55, 25],
-      [42, 45, 15, 32, 46, 16],
-
-      // 39
-      [20, 147, 117, 4, 148, 118],
-      [40, 75, 47, 7, 76, 48],
-      [43, 54, 24, 22, 55, 25],
-      [10, 45, 15, 67, 46, 16],
-
-      // 40
-      [19, 148, 118, 6, 149, 119],
-      [18, 75, 47, 31, 76, 48],
-      [34, 54, 24, 34, 55, 25],
-      [20, 45, 15, 61, 46, 16]
-    ];
-
-    var qrRSBlock = function(totalCount, dataCount) {
-      var _this = {};
-      _this.totalCount = totalCount;
-      _this.dataCount = dataCount;
-      return _this;
-    };
-
-    var _this = {};
-
-    var getRsBlockTable = function(typeNumber, errorCorrectLevel) {
-
-      switch(errorCorrectLevel) {
-      case QRErrorCorrectLevel.L :
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
-      case QRErrorCorrectLevel.M :
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
-      case QRErrorCorrectLevel.Q :
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
-      case QRErrorCorrectLevel.H :
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
-      default :
-        return undefined;
-      }
-    };
-
-    _this.getRSBlocks = function(typeNumber, errorCorrectLevel) {
-
-      var rsBlock = getRsBlockTable(typeNumber, errorCorrectLevel);
-
-      if (typeof rsBlock == 'undefined') {
-        throw new Error('bad rs block @ typeNumber:' + typeNumber +
-            '/errorCorrectLevel:' + errorCorrectLevel);
-      }
-
-      var length = rsBlock.length / 3;
-
-      var list = new Array();
-
-      for (var i = 0; i < length; i += 1) {
-
-        var count = rsBlock[i * 3 + 0];
-        var totalCount = rsBlock[i * 3 + 1];
-        var dataCount = rsBlock[i * 3 + 2];
-
-        for (var j = 0; j < count; j += 1) {
-          list.push(qrRSBlock(totalCount, dataCount) );
-        }
-      }
-
-      return list;
-    };
-
-    return _this;
-  }();
-
-  //---------------------------------------------------------------------
-  // qrBitBuffer
-  //---------------------------------------------------------------------
-
-  var qrBitBuffer = function() {
-
-    var _buffer = new Array();
-    var _length = 0;
-
-    var _this = {};
-
-    _this.getBuffer = function() {
-      return _buffer;
-    };
-
-    _this.getAt = function(index) {
-      var bufIndex = Math.floor(index / 8);
-      return ( (_buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1;
-    };
-
-    _this.put = function(num, length) {
-      for (var i = 0; i < length; i += 1) {
-        _this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1);
-      }
-    };
-
-    _this.getLengthInBits = function() {
-      return _length;
-    };
-
-    _this.putBit = function(bit) {
-
-      var bufIndex = Math.floor(_length / 8);
-      if (_buffer.length <= bufIndex) {
-        _buffer.push(0);
-      }
-
-      if (bit) {
-        _buffer[bufIndex] |= (0x80 >>> (_length % 8) );
-      }
-
-      _length += 1;
-    };
-
-    return _this;
-  };
-
-  //---------------------------------------------------------------------
-  // qr8BitByte
-  //---------------------------------------------------------------------
-
-  var qr8BitByte = function(data) {
-
-    var _mode = QRMode.MODE_8BIT_BYTE;
-    var _data = data;
-    var _bytes = qrcode.stringToBytes(data);
-
-    var _this = {};
-
-    _this.getMode = function() {
-      return _mode;
-    };
-
-    _this.getLength = function(buffer) {
-      return _bytes.length;
-    };
-
-    _this.write = function(buffer) {
-      for (var i = 0; i < _bytes.length; i += 1) {
-        buffer.put(_bytes[i], 8);
-      }
-    };
-
-    return _this;
-  };
-
-  //=====================================================================
-  // GIF Support etc.
-  //
-
-  //---------------------------------------------------------------------
-  // byteArrayOutputStream
-  //---------------------------------------------------------------------
-
-  var byteArrayOutputStream = function() {
-
-    var _bytes = new Array();
-
-    var _this = {};
-
-    _this.writeByte = function(b) {
-      _bytes.push(b & 0xff);
-    };
-
-    _this.writeShort = function(i) {
-      _this.writeByte(i);
-      _this.writeByte(i >>> 8);
-    };
-
-    _this.writeBytes = function(b, off, len) {
-      off = off || 0;
-      len = len || b.length;
-      for (var i = 0; i < len; i += 1) {
-        _this.writeByte(b[i + off]);
-      }
-    };
-
-    _this.writeString = function(s) {
-      for (var i = 0; i < s.length; i += 1) {
-        _this.writeByte(s.charCodeAt(i) );
-      }
-    };
-
-    _this.toByteArray = function() {
-      return _bytes;
-    };
-
-    _this.toString = function() {
-      var s = '';
-      s += '[';
-      for (var i = 0; i < _bytes.length; i += 1) {
-        if (i > 0) {
-          s += ',';
-        }
-        s += _bytes[i];
-      }
-      s += ']';
-      return s;
-    };
-
-    return _this;
-  };
-
-  //---------------------------------------------------------------------
-  // base64EncodeOutputStream
-  //---------------------------------------------------------------------
-
-  var base64EncodeOutputStream = function() {
-
-    var _buffer = 0;
-    var _buflen = 0;
-    var _length = 0;
-    var _base64 = '';
-
-    var _this = {};
-
-    var writeEncoded = function(b) {
-      _base64 += String.fromCharCode(encode(b & 0x3f) );
-    };
-
-    var encode = function(n) {
-      if (n < 0) {
-        // error.
-      } else if (n < 26) {
-        return 0x41 + n;
-      } else if (n < 52) {
-        return 0x61 + (n - 26);
-      } else if (n < 62) {
-        return 0x30 + (n - 52);
-      } else if (n == 62) {
-        return 0x2b;
-      } else if (n == 63) {
-        return 0x2f;
-      }
-      throw new Error('n:' + n);
-    };
-
-    _this.writeByte = function(n) {
-
-      _buffer = (_buffer << 8) | (n & 0xff);
-      _buflen += 8;
-      _length += 1;
-
-      while (_buflen >= 6) {
-        writeEncoded(_buffer >>> (_buflen - 6) );
-        _buflen -= 6;
-      }
-    };
-
-    _this.flush = function() {
-
-      if (_buflen > 0) {
-        writeEncoded(_buffer << (6 - _buflen) );
-        _buffer = 0;
-        _buflen = 0;
-      }
-
-      if (_length % 3 != 0) {
-        // padding
-        var padlen = 3 - _length % 3;
-        for (var i = 0; i < padlen; i += 1) {
-          _base64 += '=';
-        }
-      }
-    };
-
-    _this.toString = function() {
-      return _base64;
-    };
-
-    return _this;
-  };
-
-  //---------------------------------------------------------------------
-  // base64DecodeInputStream
-  //---------------------------------------------------------------------
-
-  var base64DecodeInputStream = function(str) {
-
-    var _str = str;
-    var _pos = 0;
-    var _buffer = 0;
-    var _buflen = 0;
-
-    var _this = {};
-
-    _this.read = function() {
-
-      while (_buflen < 8) {
-
-        if (_pos >= _str.length) {
-          if (_buflen == 0) {
-            return -1;
-          }
-          throw new Error('unexpected end of file./' + _buflen);
-        }
-
-        var c = _str.charAt(_pos);
-        _pos += 1;
-
-        if (c == '=') {
-          _buflen = 0;
-          return -1;
-        } else if (c.match(/^\s$/) ) {
-          // ignore if whitespace.
-          continue;
-        }
-
-        _buffer = (_buffer << 6) | decode(c.charCodeAt(0) );
-        _buflen += 6;
-      }
-
-      var n = (_buffer >>> (_buflen - 8) ) & 0xff;
-      _buflen -= 8;
-      return n;
-    };
-
-    var decode = function(c) {
-      if (0x41 <= c && c <= 0x5a) {
-        return c - 0x41;
-      } else if (0x61 <= c && c <= 0x7a) {
-        return c - 0x61 + 26;
-      } else if (0x30 <= c && c <= 0x39) {
-        return c - 0x30 + 52;
-      } else if (c == 0x2b) {
-        return 62;
-      } else if (c == 0x2f) {
-        return 63;
-      } else {
-        throw new Error('c:' + c);
-      }
-    };
-
-    return _this;
-  };
-
-  //---------------------------------------------------------------------
-  // gifImage (B/W)
-  //---------------------------------------------------------------------
-
-  var gifImage = function(width, height) {
-
-    var _width = width;
-    var _height = height;
-    var _data = new Array(width * height);
-
-    var _this = {};
-
-    _this.setPixel = function(x, y, pixel) {
-      _data[y * _width + x] = pixel;
-    };
-
-    _this.write = function(out) {
-
-      //---------------------------------
-      // GIF Signature
-
-      out.writeString('GIF87a');
-
-      //---------------------------------
-      // Screen Descriptor
-
-      out.writeShort(_width);
-      out.writeShort(_height);
-
-      out.writeByte(0x80); // 2bit
-      out.writeByte(0);
-      out.writeByte(0);
-
-      //---------------------------------
-      // Global Color Map
-
-      // black
-      out.writeByte(0x00);
-      out.writeByte(0x00);
-      out.writeByte(0x00);
-
-      // white
-      out.writeByte(0xff);
-      out.writeByte(0xff);
-      out.writeByte(0xff);
-
-      //---------------------------------
-      // Image Descriptor
-
-      out.writeString(',');
-      out.writeShort(0);
-      out.writeShort(0);
-      out.writeShort(_width);
-      out.writeShort(_height);
-      out.writeByte(0);
-
-      //---------------------------------
-      // Local Color Map
-
-      //---------------------------------
-      // Raster Data
-
-      var lzwMinCodeSize = 2;
-      var raster = getLZWRaster(lzwMinCodeSize);
-
-      out.writeByte(lzwMinCodeSize);
-
-      var offset = 0;
-
-      while (raster.length - offset > 255) {
-        out.writeByte(255);
-        out.writeBytes(raster, offset, 255);
-        offset += 255;
-      }
-
-      out.writeByte(raster.length - offset);
-      out.writeBytes(raster, offset, raster.length - offset);
-      out.writeByte(0x00);
-
-      //---------------------------------
-      // GIF Terminator
-      out.writeString(';');
-    };
-
-    var bitOutputStream = function(out) {
-
-      var _out = out;
-      var _bitLength = 0;
-      var _bitBuffer = 0;
-
-      var _this = {};
-
-      _this.write = function(data, length) {
-
-        if ( (data >>> length) != 0) {
-          throw new Error('length over');
-        }
-
-        while (_bitLength + length >= 8) {
-          _out.writeByte(0xff & ( (data << _bitLength) | _bitBuffer) );
-          length -= (8 - _bitLength);
-          data >>>= (8 - _bitLength);
-          _bitBuffer = 0;
-          _bitLength = 0;
-        }
-
-        _bitBuffer = (data << _bitLength) | _bitBuffer;
-        _bitLength = _bitLength + length;
-      };
-
-      _this.flush = function() {
-        if (_bitLength > 0) {
-          _out.writeByte(_bitBuffer);
-        }
-      };
-
-      return _this;
-    };
-
-    var getLZWRaster = function(lzwMinCodeSize) {
-
-      var clearCode = 1 << lzwMinCodeSize;
-      var endCode = (1 << lzwMinCodeSize) + 1;
-      var bitLength = lzwMinCodeSize + 1;
-
-      // Setup LZWTable
-      var table = lzwTable();
-
-      for (var i = 0; i < clearCode; i += 1) {
-        table.add(String.fromCharCode(i) );
-      }
-      table.add(String.fromCharCode(clearCode) );
-      table.add(String.fromCharCode(endCode) );
-
-      var byteOut = byteArrayOutputStream();
-      var bitOut = bitOutputStream(byteOut);
-
-      // clear code
-      bitOut.write(clearCode, bitLength);
-
-      var dataIndex = 0;
-
-      var s = String.fromCharCode(_data[dataIndex]);
-      dataIndex += 1;
-
-      while (dataIndex < _data.length) {
-
-        var c = String.fromCharCode(_data[dataIndex]);
-        dataIndex += 1;
-
-        if (table.contains(s + c) ) {
-
-          s = s + c;
-
-        } else {
-
-          bitOut.write(table.indexOf(s), bitLength);
-
-          if (table.size() < 0xfff) {
-
-            if (table.size() == (1 << bitLength) ) {
-              bitLength += 1;
-            }
-
-            table.add(s + c);
-          }
-
-          s = c;
-        }
-      }
-
-      bitOut.write(table.indexOf(s), bitLength);
-
-      // end code
-      bitOut.write(endCode, bitLength);
-
-      bitOut.flush();
-
-      return byteOut.toByteArray();
-    };
-
-    var lzwTable = function() {
-
-      var _map = {};
-      var _size = 0;
-
-      var _this = {};
-
-      _this.add = function(key) {
-        if (_this.contains(key) ) {
-          throw new Error('dup key:' + key);
-        }
-        _map[key] = _size;
-        _size += 1;
-      };
-
-      _this.size = function() {
-        return _size;
-      };
-
-      _this.indexOf = function(key) {
-        return _map[key];
-      };
-
-      _this.contains = function(key) {
-        return typeof _map[key] != 'undefined';
-      };
-
-      return _this;
-    };
-
-    return _this;
-  };
-
-  var createImgTag = function(width, height, getPixel, alt) {
-
-    var gif = gifImage(width, height);
-    for (var y = 0; y < height; y += 1) {
-      for (var x = 0; x < width; x += 1) {
-        gif.setPixel(x, y, getPixel(x, y) );
-      }
-    }
-
-    var b = byteArrayOutputStream();
-    gif.write(b);
-
-    var base64 = base64EncodeOutputStream();
-    var bytes = b.toByteArray();
-    for (var i = 0; i < bytes.length; i += 1) {
-      base64.writeByte(bytes[i]);
-    }
-    base64.flush();
-
-    var img = '';
-    img += '<img';
-    img += '\u0020src="';
-    img += 'data:image/gif;base64,';
-    img += base64;
-    img += '"';
-    img += '\u0020width="';
-    img += width;
-    img += '"';
-    img += '\u0020height="';
-    img += height;
-    img += '"';
-    if (alt) {
-      img += '\u0020alt="';
-      img += alt;
-      img += '"';
-    }
-    img += '/>';
-
-    return img;
-  };
-
-  //---------------------------------------------------------------------
-  // returns qrcode function.
-
-  return qrcode;
-}();
-
-(function (factory) {
-  if (typeof define === 'function' && define.amd) {
-      define([], factory);
-  } else if (typeof exports === 'object') {
-      module.exports = factory();
-  }
-}(function () {
-    return qrcode;
-}));
\ No newline at end of file
diff --git a/vendor/qrcode_UTF8.js b/vendor/qrcode_UTF8.js
deleted file mode 100644
index 6f0148d..0000000
--- a/vendor/qrcode_UTF8.js
+++ /dev/null
@@ -1,59 +0,0 @@
-//---------------------------------------------------------------------
-//
-// QR Code Generator for JavaScript UTF8 Support (optional)
-//
-// Copyright (c) 2011 Kazuhiko Arase
-//
-// URL: http://www.d-project.com/
-//
-// Licensed under the MIT license:
-//  http://www.opensource.org/licenses/mit-license.php
-//
-// The word 'QR Code' is registered trademark of
-// DENSO WAVE INCORPORATED
-//  http://www.denso-wave.com/qrcode/faqpatent-e.html
-//
-//---------------------------------------------------------------------
-
-!function(qrcode) {
-
-  //---------------------------------------------------------------------
-  // overwrite qrcode.stringToBytes
-  //---------------------------------------------------------------------
-
-  qrcode.stringToBytes = function(s) {
-    // http://stackoverflow.com/questions/18729405/how-to-convert-utf8-string-to-byte-array
-    function toUTF8Array(str) {
-      var utf8 = [];
-      for (var i=0; i < str.length; i++) {
-        var charcode = str.charCodeAt(i);
-        if (charcode < 0x80) utf8.push(charcode);
-        else if (charcode < 0x800) {
-          utf8.push(0xc0 | (charcode >> 6),
-              0x80 | (charcode & 0x3f));
-        }
-        else if (charcode < 0xd800 || charcode >= 0xe000) {
-          utf8.push(0xe0 | (charcode >> 12),
-              0x80 | ((charcode>>6) & 0x3f),
-              0x80 | (charcode & 0x3f));
-        }
-        // surrogate pair
-        else {
-          i++;
-          // UTF-16 encodes 0x10000-0x10FFFF by
-          // subtracting 0x10000 and splitting the
-          // 20 bits of 0x0-0xFFFFF into two halves
-          charcode = 0x10000 + (((charcode & 0x3ff)<<10)
-            | (str.charCodeAt(i) & 0x3ff));
-          utf8.push(0xf0 | (charcode >>18),
-              0x80 | ((charcode>>12) & 0x3f),
-              0x80 | ((charcode>>6) & 0x3f),
-              0x80 | (charcode & 0x3f));
-        }
-      }
-      return utf8;
-    }
-    return toUTF8Array(s);
-  };
-
-}(qrcode);