Commit Messages include stale data when amending

[thechutrain]

Description

Users may see stale co-author data when amending commit messages in Vim terminal

Steps to reproduce

1. Make sure you are currently pairing with at least one person
2. Make a commit
3. remove all the people you are currently pairing with
4. git commit --amend

Expected result

You should no longer see stale data in the commit message

Actual result

Previous co-authors were still included in the commit message, although this gets cleaned up by git-pair after you amend your commit message

[thechutrain]

Possible solution:

• use the prepare-commit-msg hook to possibly check and possibly clean up "co-authored-by" lines.