User nostradani contributed support for Swift Package Manager. I don’t even know his/her full name, but by the looks of things this was a hell of a lot of work.
Honestly I haven’t even looked adding SPM-support to my frameworks yet, but I hear that if you have resources in your framework project you have to wait until Swift 5.3. anyway. DTFoundation doesn’t, so I am glad somebody stepped up and did the work.
But in a SwiftUI app of mine I am referencing two Swift packages. It is quite convenient having this be integrated into Xcode.
The new version is tagged on GitHub and also available on Cocoapods.
Also published on Medium.