A timeline, currently in what I would call a "proof of concept" stage,
is already available in the Devalot Subversion HEAD.
At the moment it provides a timeline of ticket events, but the
intention and design is to include changes in pages, comments, and in
an earlier thread on this group we commented on support for logging
changes from an external version control system. It also has built in
Email notification support (which is why I wrote it in the first
place).
Aside from finishing timeline support :-) I'd like to add the
following to the wish list:
- File Attachments in pages and blog posts
- Delete file attachments
Cheers, sam