Changes to core plugins are included along with other core changes, so it’s just the “non core official plugins” which are missing. Adding changes from other repositories is something we might consider in future, but there aren’t any immediate plans to implement it.
For non-core plugins (both official & third-party), GitHub is probably the best way to track their changes for now.
Good idea! It might be a little tricky to implement, because the commit list is implemented as a “virtual list”, where only the on-screen elements are actually rendered… but I’ll see what I can do.