feature request: better perspective transform

[hyansuper]

jsQR is one of very few qrcode readers I can find online in javascritpt, and it works very well. but when detecting qrcode from non-90-degree-angle, the image became distorted, and unable to read the qrcode. I don't know if you can make it automatically preprocess the image and rectify perspectively distorted image. the opencv-python's cv2.QRCodeDetector() can read qrcode from distorted image (captured from 45 degree angle), can you achive similar functionality?