Fix for stackable items being unmoveable when charges=0
Fix for special attack NPC_CHASE_DISTANCE to now work correctly
Perl export: NPC GetAttackDelay
Perl export: NPC GetAvoidanceRating
Perl export: NPC AddMeleeProc
Special Attacks will no longer be able to hit immune to melee / bane only flagged NPCs.
Merge pull request #317 from Leere/chargesfix

Fix for stackable items being unmoveable when charges=0
Fix for NPC ranged procs
Switch path stuff to vectors

This should be more CPU cache friendly compared to lists so should
be faster. (profiling looked promising)
RoF2 fix for being unable to close bags by right clicking or open multiple bags.
Perl: NPC AddRangedProc(spellid, chance)
Perl: NPC AddDefensiveProc(spellid, chance)
update
Merge pull request #318 from KayenEQ/Development

Misc fixes / Perl exports