compiled in by default: you need to add :SB-THREAD to the target
features. See the "Beyond ANSI" chapter of the manual for
details.
+ * Garbage collection refactoring: user-visible change is that a
+ call to the GC function during WITHOUT-GCING will not do garbage
+ collection until the end of the WITHOUT-GCING. If you were doing
+ this you were probably losing anyway.
+
* sb-aclrepl module improvements: an integrated inspector, added
repl features, and a bug fix to :trace command.
* fixed some bugs revealed by Paul Dietz' test suite: