Development has come to halt since I don't use it any longer to
write programs. The last issues I addressed are: client thread safety,
dynamic widget resizing, glibc-2 port, big endianness. Though these are
still beta.
If you really want a small, portable GUI, look for a glib/gtk+ port to framebuffers. Gtk+ is flexible, has a lot of language bindings and is evolving FAST. It will soon appear at the gnome project!