def trades(opts = {})
      get('/api/1/BTCUSD/trades/fetch', opts).
        sort_by { |trade| trade['date'] }.collect do |trade|
        Trade.new(trade)
      end
    end
def trades(opts = {})
      get('/api/1/BTCUSD/trades/fetch', opts).
        sort_by { |trade| trade['date'] }.collect do |trade|
        Trade.new(trade)
      end
    end
Fetch recent trades

 @authenticated false
 @return [Array<MtGox::Trade>] an array of trades, sorted in chronological order
 @example
   MtGox.trades
   MtGox.trades :since => 12341234