ZSS-772 Support render long text that across Cell boundary when export to PDF
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
enhance selenium test
Merge pull request #57 from RaymondChao/enhance-testing

enhance selenium test
update version to 3.6.0 for release-note
ZSS-775 Support scale page when export to PDF
ZSS-779 Text clipped when export center-across-selection cells to PDF
Merge branch '3.5' of github.com:zkoss/zkspreadsheet into 3.5
ZSS-780 Cell with background color should not print grid-line when export to PDF
Change version from 3.5.1 to 3.6.0