Refactoring Unit+Item/Attachment handling to be a more flexible and robust
Unit+Combat calculations now account for resistances to damage types, mitigation from attributes, and weapons (plus their procs)
Added DamageTypes and DamageResistances to Species combat params
Added DamageTypes to WeaponParams
Added HoldItem flag to PickUpItemSettings
Added AttackSpeed attribute, used in combat timings (value*(100/1000) = delay in seconds between attacks)
Added AmourRating attribute, used in combat calculations as mitigations (exposed in data, so optional)
Weapons data for both spears and rock items