Imager: Perform several operations to manipulate images

This package can be used to perform several operations to manipulate images.

The main class can perform many types of image manipulation operations, such as: resize images, add alpha channel, flip, rotate, add watermark, apply effects like blur, darkness, brightness, contrast, gamma, gray scale, negate, sepia, sketch, smooth, emboss, edge detection, sharpen, soften, and other types of convolution.

There are also several classes that can load and save images to files in JPEG and PNG formats, or initialize images with given background color or just a make it a transparent canvas.