• Integrated osxfuse's copy of sshfs, which means that sshfs now works
  on OS X out of the box.
• Added -o cache_max_size=N option to let users tune the maximum size of
  the cache in number of entries.
• Added -o cache_clean_interval=N and -o cache_min_clean_interval=N
  options to let users tune the cleaning behavior of the cache.