I expected to be able to run
$ fissile diff --release https://bosh.io/d/github.com/cloudfoundry/nats-release?v=23,https://bosh.io/d/github.com/cloudfoundry/nats-release?v=24
But that doesn't work:
dev config diff: error loading release information: Error loading dev release information: Path /Users/jan/go/src/code.cloudfoundry.org/fissile/https:/bosh.io/d/github.com/cloudfoundry/nats-release?v=23 (release directory) does not exist