Add "show file history" menu item. #3
Description
Add a menu item which will print a list of all the backups saved for a file in a new buffer, allowing for double-clicking to open a particular historical version, or diff/merge a file by double-clicking a [merge] link. Even better would be some sort of incremental diff indicators between versions like Github does, e.g.
file.txt
[merge] 2012.04.13.04.26.00 ++----
[merge] 2012.04.11.18.24.44 --
[merge] 2012.04.10.09.05.13 ++