Release Notes: This release adds a parameter to allow alpha channel removal based on average image transparency.
Release Notes: This release fixes compilation issues with libpng 1.5.x.
Release Notes: This release added SASL support for HTTP authentication and fixed nameserver-related code that prevented compilation on certain OS and architecture combinations, such as glibc and GCC on ARM.
Release Notes: Non-POSIX behavior which brought problems with eglibc was fixed. A Safari HTTP authentication problem was fixed.
Release Notes: Code to avoid unnecessary image processing was added, providing some CPU processing savings. The stdin/stdout daemon-mode kludges were fixed.