sql fix
Allow negative values for avoidance to work. (debuffs)
debug msg removal
Update to how bonuses are calculated in chance to hit code to be
consistent across all relevant effects (treating avoidance
and hit chance bonuses equally).
Rule ArcheryHitPenalty will now calc correctly (Was doing basically nothing)
New field npc_types 'Avoidance' (add avoidance bonus to npc)
Rules for setting min / max chance to hit
minor fix
Spell Effect for melee mitigation will no longer use same bonus
item shielding effect. Added support for spell effect melee mitigation
to work on as item worn effects and AA.
Support for AA derived AC bonus.
Alllow SE_PetMeleeMitigation to work on swarm pets.
Merge pull request #169 from KayenEQ/Development

Updates to npc_spells and npc_types table.
C! Restricted AA Buy to Class
C! AA Exp will summon item when AA earned
C! AA Refund will only refund Class AA