- update to 1.6:
* Eliminated the dependency on `pandoc` for installing the
manual page.
* Updated the documentation to reflect recent kernel changes,
including the kernel adding support for more Merkle tree
block sizes, IMA adding support for fs-verity, and btrfs
adding support for fs-verity.
* Updated the documentation to refer to the new fsverity
mailing list.
* Fixed a C++ compatibility issue in `libfsverity.h`.
* `fsverity measure` now follows standard command line syntax
for arguments beginning with hyphens. I.e.,
`fsverity measure --foo` now treats `--foo` as
* an (unsupported) option, not a filename. To operate on a
file actually named `--foo`, use `fsverity measure -- --foo`.