ref: d79d058a950abf6ab6985cc7f44e851fa88aa4b5
parent: c5b298956bde7c034464c88be0c85d9e12bc5d0a
author: Ori Bernstein <ori@eigenstate.org>
date: Sun Dec 5 11:24:18 EST 2021
snap: keep root in snapshot tree. we don't yet support taking new snapshots, we free the wrong blocks, but we're making progress.