quantopian/zipline — pull request #37 by twiecki (2012-12-06 19:50:13+00:00)
Title: Fix transforms

This does quite a few things.

1) It fixes the EventWindow to always use a constant window length
2) The batchtransform is now way more flexible in creating the pandas datapanel based on the events.
3) Refactor the batch transform test to be more stringent.