Worksheet columns
Created originally on Bitbucket by Blackeagle52 (Peter Pul)
Changesets for this Pull Request have not been imported, because it had been already declined on Bitbucket. Marked as closed by the import user.
- Use dimensions to calculate the full dimensions of the worksheet, which also optimises the amount of calls to the max_row property
- Replaced min_row within squared range with 1, so you will also get from the first column, added test for new functionality