4.0.0 com.github.kenglxn.QRGen qrgen-parent 2.6.0 com.github.kenglxn.QRGen android 2.6.0 QRGen-android UTF-8 com.github.kenglxn.QRGen core 2.6.0 com.google.android android org.robolectric robolectric com.squareup fest-android junit junit