In order to keep the attic clean and correct, it is of high importance that the last commit in the main branch which touches a XEP also adds a revision block.
This can be enforced by ensuring that all merges to the main branch also "seal" the changes with a revision block in the last commit which touches a given XEP file.
Work proposal
Use the tool created in #1238 to verify that a tagged XEP file is not changed anymore after the commit which tags it.
Summary
In order to keep the attic clean and correct, it is of high importance that the last commit in the main branch which touches a XEP also adds a revision block.
This can be enforced by ensuring that all merges to the main branch also "seal" the changes with a revision block in the last commit which touches a given XEP file.
Work proposal
Use the tool created in #1238 to verify that a tagged XEP file is not changed anymore after the commit which tags it.