# File lib/rbot/irc.rb, line 59
    def initialize(name, upper, lower)
      @key = name.to_sym
      raise "Casemap #{name.inspect} already exists!" if @@casemaps.has_key?(@key)
      @@casemaps[@key] = {
        :upper => upper,
        :lower => lower,
        :casemap => self
      }
    end