add old notifications sketch

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
remove unneeded changelog.future

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
+factsheets

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>