This version includes many changes. It is the first major release of the main line after a fork of the project occurred after version 4.2.7. It includes small changes that were made in the main line, along with changes made in a fork by Alessandro Scotti and lots of further changes to that fork made afterwards by H.G. Muller (released as versions 4.3.x). This release represents a unified version of all changes made after the fork. It includes many new features and bugfixes.
