liebke/incanter — pull request #47 by davidjameshumphreys (2011-10-23 13:07:19+00:00)
Title: Excel multi-sheet support.

Can now read and write many datasets into a single Excel workbook.

read-xls and save-xls are now multimethods.
Changed read-xls functions to dispatch on all-sheets? optional parameter
Changed save-xls functions to dispatch on the type of the 'dataset' parameter.