Add extension method to wrap sheet name in quotes, only if required, i.e. it contains a space in the name ...

Throw exception of invalid named range is added on workbook scope
Contain named range references to minimum and maximum column and row dimensions when deleting rows / columns. Fixes #328

Unknown changes - something to do with line endings?

Don't reference cell to get row height - it will create new unused cell in cells collection.

Merge pull request #62 from igitur/add-openxml-validator ...

Optionally validate the workbook using OpenXmlValidator when saving it.

Expose new Cells() function to iterate over cells, including unused cells inside range, but excluding unused cells outside range.

Enable workbook validation in tests

Project hierarchy cleanup