Gnumeric Writer #1551
Description
This is:
- [ ] a bug report
- [X] a feature request
- [ ] **not** a usage question (ask them on https://stackoverflow.com/questions/tagged/phpspreadsheet or https://gitter.im/PHPOffice/PhpSpreadsheet)
We have a Gnumeric Reader, but I was literally today years old when I realised that I'd never created a Writer for Gnumeric files: an oversight that should be corrected