Fix to row/col swap
Fix that #hyperlink? wasn't passing through its sheet, and defer its implementation to #hyperlink, which is equivalent.
Minor refactoring of read_hyperlinks - inline some locals, map the hash, use Roo::Base rather than Roo::GenericSpreadsheet, and scope some work down to the condition in which its needed.
DRY-up Excelx#process_zipfile
Fix that the mode addition of #88 wasn't backwards-compatible with the old options provision.
Version bump to 1.13.0
Regenerate gemspec for version 1.13.0
Added a test showing the problem swapping row/col in Roo's cache when writing to a Google spreadsheet
Merge pull request #79 from pjungwir/master

Fix to row/col swap
Certain excelx files result in nil 'rels_files', do not follow rel in that case. Example file in commit
Merge pull request #90 from jayjlawrence/master

Certain excelx files result in nil 'rels_files', do not follow rel in this case
Add a regression test and changelog entry for #90, and apply a consistent treatment for the fix via Excelx#load_xmls
Version bump to 1.13.1
Regenerate gemspec for version 1.13.1
Fix that Excelx link cells would blow up if the link contents was not a string. #92
Version bump to 1.13.2
Regenerate gemspec for version 1.13.2
Update Spreadsheet::Open to support Tempfiles. Fixes #84.
Exporting link url when converting spreadsheet to csv

If the celltype was a link, the behaviour was raising an unhandled
celltype exception. I believe the best solution for this case (at least
for my use case) is exporting the url of the link.
Properly process paths/files with spaces in them.