Version 2.4 is a featured release that introduces new functionality as
well as many performance and security improvements.

Main additions are:

• Black point detection from the algorithm disclosed by Adobe
• Added support for transforms on planar data with different stride
• Added a new plug-in type for optimizing full transforms
• Linear (gamma 1.0) profiles can now operate in unbounded mode
• Added “half” float support

The last point of 16-bit floating point support is much requested from e.g. the Krita project.