0.4.0
  - Add QR code detector
  - Windows: update to libopencv 4.8.1

0.3.0
  - Windows: update to libopencv 4.8.0

0.2.3
  - Compile with CXX17 when available to fix compiler warnings

0.2.2
  - MacOS: update binaries to opencv 4.5.5

0.2
  - Windows / MacOS: upgrade binary packages to OpenCV 4.4.0
  - Add ocv_rectangle
  - Add ocv_polygon
  - Add ocv_bbox
  - Add ocv_chull
  - Add ocv_keypoints for keypoint detection using FAST, Harris
  - Add ocv_grayscale
  - Add ocv_version

0.1
  - Initial CRAN release
