SS4 Support?

[altwohill]

Hi,

Would you consider a PR to bring compatibility to SS4? I have a site that uses this module that I need to upgrade.
If so, do you have a namespace you'd like me to use?

Cheers, Al

[antonsmithnz]

Yes, we will definitely consider PRs for SS4 support.

The namespace Firebrand\ExcelExport will be fine :)