1. listpeers has a deprecated `"closer": null`, which we need
to handle in the schema, while trying not to damage our
documentation too much.
2. Don't print a condition if there are no fields to print.
3. Allow a special "untyped" marker for multifundchannel which returns
arbitrary JSON in a field.
4. Allow a single field return (for 'stop').
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If we have conditional fields, we often set `additionalProperties` `true`
at the top-level, but then we have to make sure to cover all the possible
combinations in conditionals, so unintended additions don't appear.
This revealed missing fields in delinvoice, for example.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: delpay a new method to delete the payment completed or failed.
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
