my wild guess this should not be hard to implement,
- say, currently in a topic, when there is a new topic, a function is triggered, in which all participants will be notified.
- in the system, when any post is edited, there is an event, could hook that up to the function that does the notification.
and there could be a setting to let notified or not for participated topic being edited.
still feel this might be too much…
comparing to github issue, it does not notify for comment or issue body edits.
and this could make system more busy, esp, when there are a big number of users…