tree 638c7c11cae16d5871657ee97f992ee7681c4048
parent fb3ecd4fb7dc49e963a62f6d7fe5b3bf2a41b65a
author Rafael Schloming <rhs@alum.mit.edu> 1416923544 -0500
committer Rafael Schloming <rhs@alum.mit.edu> 1417086890 -0500

fixed refcounting semantics to allow navigation from parent to child without reference cycles