GC was changed to consider the new representation.
tree8dc414fd166ee9a8d9b7270f10ed54d4b44d4080
-rw-r--r-- 12516 library.scm
-rw-r--r-- 60293 picobit-vm.c
-rw-r--r-- 36405 picobit.scm
-rw-r--r-- 388 red-green.scm
-rw-r--r-- 31589 robot.scm