Made (release nil) no-op instead of error. Added shorthand for using
drwxr-xr-x - gdk
-rw-r--r-- 2923 generating.lisp
drwxr-xr-x - glib
drwxr-xr-x - gtk
-rw-r--r-- 16740 subclass.lisp
-rw-r--r-- 11766 subtest.lisp