faster to do:
null check & comparison for each
vs
collection add (especially if growing collection)
don't evaluate all slots (faster), capturing the dexlevel[] object is
fine until the enumerable is discarded
WinForms->Core logic absorbing (CommonEdits)
loading ShowdownSet now applies properties to PKM instead of PKMEditor
Contest/IVs for Static/Trades are no longer set by default (less object
allocations), and are now checked by the encounter generator
