Zarel/Pokemon-Showdown — pull request #220 by Joimer (2013-04-30 07:02:19+00:00)
Title: Update OM of the month, new Seasonal, move Tier Shift, add Gen 1 ladder 

PU is the new OM of the Month, move it to Other Meta of the Month section. Add the new Seasonal, May Mayhem, delete older Seasonals, move Tier Shift ot the Other Metagames section, add Gen 1 OU BETA ladder.