imply >o< to >_< and :O

BUR #39957 is pending approval.

create implication >o< -> >_<
create implication >o< -> :o

If tag "xd" implies ":D" and ">_<" (or x3 implies ":3" and ">_<"), then this tag also needs to be split into two implications.

BUR #39961 is pending approval.

deprecate >o<
mass update >o< -> ->o< >_< :o

Of all the tandem tags out there, the emoticons are the ones I hate the most. What's next, XP? >x<? XT? XV? >.<? Xq? X<? There are endless combinations for these godforsaken tags; we should not be encouraging them.

For once I agree with Zapdos, I always found this emote tag to be the dumbest of them all along with ^O^.