Beta Branch Patch 19

Reworked some stat bonus items to have unique effects instead of stat bounses:
Snow Shoes now heals on freezing a unit
Silken Sandals now grants shield on step
Ankh now deals 1 holy damage to anything your minions try to damage
Skull Necklace now grants +1 damage to undead minions on casting a dark spell

Fixed Lightning Storm Spirit Harvest giving wrong numbers of spirits
Fixed Lightning Spire Threat display being incorrect
Fixed Word of Chaos targeting being wrong
Fixed Psychic Seedling (and mod summons that use GeneratorBuff, MatureInto, or ChanceToBecome buffs) not getting minion bonuses to things it summoned