spree-2-2-stable updates

Hi, I'm not sure how active this extension still is, though i do see that radar committed to it earlier this year.

If it's still active, these are changes that we've been using on a production spree-2-2 site for the past few months and would like to contribute back to the base repo (obviously not into master but into an appropriate new branch).

If this isn't an active extension, any advice on a more current extension to use would be greatly appreciated.

Thanks!