Incorporates files from #190
Skeleton added for future implementations; currently missing gifts,
encounter info, and the fine tuning that follows.
Basically sets up areas for future implementation... feel free to submit
pull requests filling in the EncounterStatic/EncounterTrade blocks with
the basic info. I'll probably focus on gen5->4->3 in terms of priority.
Encounter slots need to be marked up for encounter slot legality (yay
32bit RNG), and will be used for PIDIV detection too.
XD/C is not in this round of implementation. Pretty much every pkm 3-5
will show up as invalid until this round of dev is finished.
