# Functions
GetImageOrientation returns the string representation of the image orientation (0-8) in 'r'.
NewRotateWriter returns a new `RotateTransformation` instance configure by 'uri' in the form of:
rotate://?orientation={ORIENTATION}
Where {ORIENTATION} is expected to be a valid EXIF orientation string (1-8).
RotateImageWithOrientation will rotate 'im' by 'degrees' degrees.
RotateImageWithOrientation will rotate 'im' based on EXIF orientation value defined in 'orientation'.
# Structs
RotateTransformation is a struct that implements the `Transformation` interface for rotating images.