Commit 555dd2da77914d6120b55b64908c59053d1596ec Parent 384f06dcbc5e904f5b5048f3cca0c030cee6ddc6 Author John MacFarlane <jgm@berkeley.edu> Date Sat, 19 Dec 2015 21:58:50 -0800 Fixed S_can_contain to allow custom nodes to have children.