Add calculation of median, percentiles, stddev (all data truncated at msec precision)
Allow usage of ezab.php instead of real ab, since it now gives us back enough data
Reorganize debug levels; now at debug 2 we output http req+resp headers same as ab does, at levels 3 and 4 we output internal debug info;
Allow user to specify usage of http 1.0 (no keepalive only)
In debug mode 2 and up display properly server sw name
Add support for setting cookies
Add option to skip printing percentiles
Add -H option to allow custom http headers