Backdrop CMS support?

Hello, and thank you for this handy module! I am going to be using this project on a new site I am building Backdrop CMS, and wanted to see if the current maintainers would be interested in maintaining the Backdrop version as well. I, of course, understand that you are probably very busy and may not be interested, but since it is your module, I wanted you to have it if you would like it.

I have started on an initial port to Backdrop and will post the Backdrop version over at https://github.com/backdrop-contrib/tablefield when it is ready.