v0.4.2 (2015-12-22)
  * Fix memory corruption when processing command line arguments, which
    could cause command line options to be ignored.

v0.4.1 (2015-10-17)
  * Disable lock sharing/propagation by default, due to bugs
    (re-enable with --propagate-locks=yes option).

v0.4.0 (2015-09-23)
  * Make mmap with MAP_SHARED work.
  * Propagate locks to underlying filesystem.
  * Implement flush, fsync, and fsyncdir operations.
  * Support more efficient I/O.

v0.3.0 (2015-09-22)
  * Implement multi-user mode.
  * Add options --shuffle-dirents, --reverse-dirents, and --pad-blocks.
  * Bug fix: don't follow symlinks in xattr syscalls.
  * Clarify BUGS in man page.

v0.2.0 (2015-08-26)
  * Implement xattrs.
  * Require rootdir arg to be absolute path, and document in man page.
  * Clarify BUGS in man page.

v0.1.0 (2015-08-21)
  * Initial release.
