v0.9.0

• bugfix
  • correct several errors in size parameter ordering
• build
  • add missing opencv_face lib reference to env.sh
  • Support for non-brew installs of opencv on Darwin
• core
  • add Channels() method to Mat
  • add ConvertTo() and NewMatFromBytes() functions
  • add Type() method to Mat
  • implement ConvertFp16() function
• dnn
  • use correct size for blob used for Caffe/Tensorflow tests
• docs
  • Update copyright date and Apache 2.0 license to include full text
• examples
  • cleanup mjpeg streamer code
  • cleanup motion detector comments
  • correct use of defer in loop
  • use correct size for blob used for Caffe/Tensorflow examples
• imgproc
  • Add cv::approxPolyDP() bindings.
  • Add cv::arcLength() bindings.
  • Add cv::matchTemplate() bindings.
  • correct comment and link for Blur function
  • correct docs for BilateralFilter()