Ok great, we can now run the delta archive process!
It'd be nice to get this running on cron on the impress-2020 server, to a temporary folder? I *do* want to be remembering to run something regularly on my personal machine too though, to keep my own copy up-to-date…
Sat down and thought about the structure here and how to make the full/delta stuff make more sense together! Here's what I came up with!
In both full and delta archiving, we prepare the manifest, we create the local archive, then we upload it to remote.
