Version 2.6 implements several common image filters, including Gaussian blur, contrast,
brightness, edge detection and others, via the method ApplyFilter.
This new feature is described in Section 8.6 of the User Manual.
The new version also implements the Chroma Key effect via the method DrawImageChromaKey.
It allows the monochromatic background of an image to be removed and replaced with another image.
This new feature is described in Section 8.7 of the User Manual.