remove linq for characteristic calc (get max IV) and others
remove some reliance on new[] for iv/ev
pk5 replace bitmagic with property get->set copy for cleanliness
Starter Pikachu & Eevee have different growth rates than their base
forms (seriously WHY?)
remove old api surface in PKX as a breaking change as adding the
parameter is necessary.
Check max case for level first, then iterate upwards (eliminates inner
if)
change wc* nature to sbyte (update comparisons, 0xFF too magic-y)
use Rand.Next(x) instead of (0, x)
