doy/spreadsheet-parsexlsx — pull request #27 by rdboisvert (2014-08-06 14:29:55+00:00)
Title: Adjustments to support undefined values created by JasperSoft

I ran into problems again with undefined values caused by the way JasperSoft creates files. These few adjustments seemed to fix my problems.

Please review these changes and add.

Thanks,
Bob