The branch-diff snap was packaged by @jokinglove during google code-in. Now the upstream author wants to take ownership on the store, here is the claim:
Can you please make the transfer?
Thanks a lot to @jokinglove! We hope to see you again helping us package a new snap, and contributing to snapcraft and branch-diff. If you have any questions, or want some guidance on some good tasks to continue, just let me know.