Caches created with the private attribute set have their filelists readable only by the owning user. Useful for example with /home, to avoid users being able to see each other's files.
0.11.1
*Breaking change - caches from previous versions are incompatible, and must be updated.*
The new cache layer by-size greatly speeds up filters by size. It is controlled by the attribute sizebuckets, for which see the manpage.