Patcher provides commands for navigating across ChangeLog and mail buffers, something especially convenient when you need to fill them by hand after skeletons have been created.
Patcher sees a project's mail and ChangeLog buffers as a circular chain
that can be walked forward and backward by typing C-c C-p n or
C-c C-p p respectively (depending on the buffer you're in, this
involves either patcher-change-log-next,
patcher-change-log-previous, patcher-mail-first-change-log
or patcher-mail-last-change-log).
From a ChangeLog buffer, you can also shortcut the cycle and switch back
to the mail buffer directly by typing C-c C-p m
(patcher-change-log-mail), or switch to the first / last
ChangeLog buffer respectively by typing C-c C-p P
(patcher-change-log-first) / C-c C-p N
(patcher-change-log-last).