This can be suppressed with -N.
Note that we wull get an error with older lightningd, but we ignore it
anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: cli: print notifications and progress bars if commands provide them.
Greatly simplify the changeset API. Instead of 'diff' we simply generate
the changes.
Also pulls up the 'next message' method, as at some point the
interactive tx protocol will be used for other things as well
(splices/closes etc)
Suggested-By: @rustyrussell
I crashed it using `-H listconfigs`
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: cli: fixed crash with `listconfigs` in `-H` mode