Version 1.2.0

• Add offline QRCode Functionality
• Add functionality to distinguish which type of QRCode the user has scanned (FuturaeClient.getQrcodeType(String qrCode))
• IMPORTANT: The FuturaeClient methods, getUserIdFromQrcode() and getSessionTokenFromQrcode() have changed and now additionally throw a MalformedQRCodeException when the scanned QRCode is not a valid one.