since v0.4
 - rate-test, new key -R
 - FreeBSD port
 - OSX port

since v0.5
 - fixes in man page and internal help
 - fixes in OSX and FreeBSD ports
 - Debian/kFreeBSD port
 - Debian/HURD port

since v0.6
 - Linux AIO support, new key -A
 - extended raw statistics, keys -p -P
 - batched mode, new key -B
 - write requests, key -W
 - automatic git-based versioning
 - Windows/MinGW port
 - DragonFlyBSD port

since v0.7
 - OpenBSD port
 - switch to IEEE 1541-2002 units: MiB/s
