Option to automatically add user as watcher to an issue if they edit an issue they're not currently involved with
We occasionally get users updating issues that they didn't create, nor are they watching.
What happens then is they don't get email -- neither for the update they made, nor for any future updates.
What we would like is to automatically have such a user added as watcher to the issue.
Suggest that this be made an option, with it default to "off" for old behaviour.