NoMethodError: read_cells for Roo::Excelx when using parse with clean: true (XLSX)

[reshleman]

Attempting to call parse on an xlsx spreadsheet with clean: true results in:

NoMethodError: undefined method `read_cells' for #<Roo::Excelx>

I'm encountering this on the latest revision of master, which Roo::VERSION claims to be 2.0.0, but which is actually un-tagged and un-released on RubyGems.

I've created a gist with reproduction steps and a backtrace, in case that's helpful.
https://gist.github.com/reshleman/effae77c02e48305917c

[stevendaniels]

I did some investigating.

For some reason, Roo::Excelx doesn't have read_cells method like Roo::CSV and Roo::OpenOffice.

All Roo::Base methods that reference the read_cells except for clean_sheet are overridden. This issue could be fixed by overriding clean_sheet method to Roo::Excelx.

I'm working on tests and a pull request.