Bukkit

- changed poison skill to potion skill, which allows to use every potion effect and not only poison
- changed backstab and potioneffect settings are now per item/effect
- changed config layout - please update your config!
- changed shadow.poison permission to shadow.effect - please check your permission settings
- added permissions for every defined item
- added support for colored messages
- added support for multiple effects per item
- added maxangle setting for backstab and potioneffect
- added PlayerPullEvent for API use
- updated hook to be more stable, e.g. you can hook on snow covered blocks now

The config layout has changed! You need to rewrite your config.
The shadow.poison permission has been changed to shadow.effect