quantopian/zipline — pull request #323 by ssanderson (2014-04-16 18:42:31+00:00)
Title: Deprecate limit_price and stop_price arguments to the order API in favor of new ExecutionStyle objects.

This introduces changes to API of the internal Blotter class. As such, it should not be merged until the Quantopian infrastructure has been updated to properly use the new API.