added support for new column types: DateColumn, DatetimeColumn, DatetimeLocalColumn, FileColumn, EmailColumn, ColorColumn, PasswordColumn, RangeColumn, MonthColumn, SearchColumn, TimeColumn, UrlColumn, WeekColumn; beware that not all these <input> types are supported by all browsers! check http://www.w3schools.com/tags/tag_input.asp for details
updated to version 0.4, added version 1.9.1 dependency on Products.DataGridField
Merge pull request #2 from tkimnguyen/master

support for new column types in Products.DataGridField