Changes touching this path

• a first push stops timing out at the door: /wants asks the metadata once for a whole address list instead of two network round trips per object, which cost this repo 10,700 of them and 30 seconds (#1069) 644cf290 · dbf3dbe6…

Renames are not followed. loot's tree maps a path to an address, so a rename is a delete and an add. This list is the history of the name, not of the bytes.