bug
remove commented/useless code
initial work on creating an interface
return an empty spreadsheet, rather than nil or an empty array, if Spreadsheet extraction returns no data
Merge pull request #70 from jazzido/fix_extractor_methods

return an empty spreadsheet, rather than nil or an empty array, if Sprea...
use a (fake) interface for Spreadsheet and Table to ensure interoperability
Merge branch 'master' into feature/tabularinterface
make protected most of the methods on Table and Spreadsheet besides those specified in the pseudo-interface
forgot a file, and cleanup
bump
autoload: trying to trim down startup time and memory usage
gemspec
comparator
reverting autoload
entities
comaprator
note
don't include test files in gem (cut size by 2MB+ !)
Fixes #77
closing 78 (SEG_CLOSE was being ignored in ObjectExtractor)