Zarel/Pokemon-Showdown — pull request #221 by Joimer (2013-04-30 11:16:25+00:00)
Title: Update OM of the month, add new Seasonal, add Gen 1 ladder

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