[Publishing] Link to post-final updates, extensions, and proposed replaces from final CAIPs?

[bumblefudge]

Following on months of discussing where to stick updates after "Final" status with the EIP editors and comparisons to how this is handled by IETF's Datatracker, I am thinking that the Jekyll rendering of individual CAIP pages could dynamically link forward to other CAIPs using the "replaces" tag to link back to it, without having to change the final CAIP one byte. But first i have to get better at Liquid and Jekyll, which... backlog.