quantopian/zipline — pull request #330 by humdings (2014-05-06 19:59:20+00:00)
Title: ENH: new api_methods - total_commission and cancel_all_open_orders 

added 2 api_methods
cancell_all_open_orders() - cancels any open orders in the blotter.
total_commission() - gets the sum of the commission costs since the start of the backtest.

added method all_raw_orders() because the raw_orders() method only returns the open orders.