This version contains several significant optimisations. Now the "freecell-only" preset can solve the first 32,000 Microsoft Freecell deals at 286 deals per second with gcc, and 301 deals per seconds with Intel's icc. (on a Pentium 4 2.4GHz computer). There are many other internal cleanups, build system tweaks, and new makefiles to build using some alternative C compilers.
The source archives from now on will be distributed as tar.bz2 instead of tar.gz which gives better compression, and a faster download.