continued simplification
core.cs is pretty much the following:
misc one-off junk
moveset fetch
encounter table fetch
evo chain fetch
might eventually move things around a bit further for cleanliness so
that misc meta junk is the only thing that remains in core.
Closes#1895 , re-verified with pkm provided in #1805
there's no shedinja gift, always is an evolution
seal some forms to remove virt call in constructor warning
egg moves also can be taught in gen1, which causes the learn source to
be locked to a tradeback (removing egg moves that have IDs greater than
RBY's moves). Simplify gen<=2 parse preference ordering with this
addition to force egg moves to be acknowledged.
Test parsing glaceon, input must equal output
Test generating encounters for a specific version (exists only on Moon)
Test generating encounters for the same version (add handling trainer
data to permit Tutors)
fixes error in VC generations-present fetch which allowed movesets from
generations 3-6 lul
exclude negative/invalid gameversions
