James Telfer

I've added my `ClientID` thoughts as a (very) rough draft PR to `ghinstallation`: https://github.com/bradleyfalzon/ghinstallation/pull/119 This can be further refined and tests included if the approach seems sound.

The association with layers like this is a great point. I can annotate an entry with its corresponding layer without issue, as long as it's ok that some records will...

Thanks for all your feedback @ahrav and @rgmz! I think I've addressed it, looking forward to a re-review. Note that I changed the entry reference format to `image-metadata:history:%d:created-by` which _may_...