Add xmldoc
Simplify some casts
Demote priority of Gen2 event yielding
Remove old EncounterMatchUtil code
Repoint DateTime.Now to console specific date provider stubs
In this pull request I've changed a ton of method signatures to reflect the more-narrow types of Species, Move# and Form; additionally, I've narrowed other large collections that stored lists of species / permitted values, and reworked them to be more performant with the latest API spaghetti that PKHeX provides. Roamer met locations, usually in a range of [max-min]<64, can be quickly checked using a bitflag operation on a UInt64. Other collections (like "Is this from Colosseum or XD") were eliminated -- shadow state is not transferred COLO<->XD, so having a Shadow ID or matching the met location from a gift/wild encounter is a sufficient check for "originated in XD".
net6 was 4x faster than 461 with the old implementation; now it is faster for both but not as disparate.
New implementation performance is always at least 30% better than the old implementation; even better for smaller chunks of data (40% less time).
Pretty much mimics bare metal value writes
