4.0.0 zxing.appspot.com 2.3.0-SNAPSHOT jar com.google.gwt gwt-user 2.5.1 com.google.gwt gwt-incubator 2.0.1 com.google.zxing zxing-parent 2.3.0-SNAPSHOT ZXing Appspot-based encoder GWT-based encoder app hosted at zxing.appspot.com