introduced new config format
- The new config format allows to define skillitems not only per ID
  but per lore and name, too.
added support for upcoming SkillLevels plugin
- allows you to define single skill values depending on the level
  of a player in a certain levelsystem
added support for all projectiles, not just arrows
- you now can use all projectiles for WayOfShadows skills
added support for multiple grappling hook configs

Still not finished (and not tested!)