WIP Add accountability to issue edits

[nolash]

Thanks, this looks perfect for a small, personal issues use-case.

Before I'd start using this, I would need some things:

• an easily unwindable history of issues, that would not require me to negotiate changes across all the issues in the repo.
• an option to enforce signatures (doesn't have to be gpg, could plugin others aswell)

The current state of this PR is meant as a proposal for an initial albeit brittle implementation of this feature.

You'll find my contacts via my profile if you wanna discuss off-platform :)