ZSS-765 Import/export more printing setup parameters
ZSS-549 Enlarge a text to exceed its row height, the text will not be exported to PDF
ZSS-768 Support horizontal/vertical center-on-page when export to PDF
ZSS-769 Support print heading when export to PDF
fine tune
ZSS-770 Support print repeating column/row titles when export to PDF.
ZSS-771 Support Left-to-Right then Top-to-Bottom paging when export to PDF.
ZSS-772 Support render long text that across Cell boundary when export to PDF
Bug ZSS-766: freeze panel is not working in IE10
Merge pull request #56 from jerrywell/3.5

Bug ZSS-766: freeze panel is not working in IE10
ZSS-773 Support rendering text in merged cell that across cell boundary when export to PDF
ZSS-774 Text line space is not consistent with Excel's printouts when export to PDF
ZSS-529 exporting a sheet to PDF creates odd page breaks
ZSS-195 When exporting a PDF the defined print areas for workbook pages are not honored.
ZSS-185 When exporting as a PDF the output of merged cells is incorrect with extra borders displayed within the merged cells
fine tune.
ZSS-776 Support print double border when export to PDF
ZSS-320 Exported PDF file has big difference with original one in the Spreadsheet, when spreadsheet book has pictures
ZSS-178 Fail to export chart properly to pdf
update zss version to 3.6.0 and zk version to 7.0.3