While the plugin is still in an early state, I'd say it blocks the most important hacks relatively relieably now (especially speed, fly and aggressive killauras). I wouldn't say it's stable yet, but I think it's useable on a normal server if you don't mind having some smaller problems.
I plan to add more configuration options in the next update, like the ability to kick and options to account for ping and tps which should improve it even more.

The config file was not changed

Changelog v0.9.1:
- improved the packetspoof check to make it more accurate and more resistant against bypasses
- added special code in the speed check for when players are on stairs and for when they have blocks above them
- tweaked the speed check to make it more accurate in general
- fixed a fly fp when walking down blocks and only slightly landing on the edge
- fixed a fly fp when in a cobweb or berry bush
- fixed a fly fp when riding horses
- fixed a fly fp when having jump boost effect
- fixed a fly fp when having levitation effect
- fixed a speed fp when spam jumping with a wall above you
- minor performance improvements