GNU Guile 2.2.0 released

The GNU Guile project hasannounced the release of Guile 2.2.0, which is an implementation of the Scheme Lisp dialect. "More than 6 years in the making, Guile 2.2 includes a new optimizingcompiler and high-performance register virtual machine. Compared tothe old 2.0 series, real-world programs often show a speedup of 30% ormore with Guile 2.2.Besides the compiler upgrade, Guile 2.2 removes limitations on userprograms by lowering memory usage, speeding up the "eval" interpreter,providing better support for multi-core programming, and last but notleast, removing any fixed limit on recursive function calls.Not only does Guile 2.2 run fast, it also supports the creation ofuser-space concurrency facilities that multiplex millions ofconcurrent lightweight "fibers". Seehttps://www.gnu.org/software/guile/news/gnu-guile-220-released.htmlfor pointers to promising experiments."