Empact/roo — pull request #29 by camallen (2013-03-22 16:09:15+00:00)
Title: date format with a time component should be a datetime

Date with time component should be an internal datetime.

Achieve this by removing the incorrect ```'m/d/yy h:mm' => :date,``` format and allow the ```Format.to_type``` code to figure out the default formatting of a cell.