splice: Enable the splice in default settings

Turn splicing on by default for channel feature sets!

Changelog-Deprecated Splicing is now enabled by default!

Author: ddustin

lightningd/lightningd.c

@@ -907,6 +907,7 @@ static struct feature_set *default_features(const tal_t *ctx)
 		OPTIONAL_FEATURE(OPT_PROVIDE_STORAGE),
 		/* Removed later for elements */
 		OPTIONAL_FEATURE(OPT_ANCHORS_ZERO_FEE_HTLC_TX),
+		OPTIONAL_FEATURE(OPT_SPLICE),
 	};
 
 	for (size_t i = 0; i < ARRAY_SIZE(features); i++) {

tests/test_misc.py

@@ -2501,7 +2501,8 @@ def test_list_features_only(node_factory):
                 'option_provide_storage/odd',
                 'option_channel_type/even',
                 'option_scid_alias/odd',
-                'option_zeroconf/odd']
+                'option_zeroconf/odd',
+                'option_splice/odd']
     expected += ['supports_open_accept_channel_type']
 
     assert features == expected