Changelog for workflow versions

Suggesting to insert a comment to the user coluld be a good way to improve versioning quality. For example, when clicking "Publish", a pop-up could raise and ask the user if he wishes to leave a comment, also not structured. This would help a better comprehension of changes ex-post.

No files or tests are named. Start by tracing the Publish action and the existing workflow versioning or history flow; clarify where an optional comment should be stored and shown before defining completion criteria for the popup and changelog.

Written by the indexing model from the issue text.