description: Update grammar
compatibility: backwards
ruby_splat_argument_def.rel: reorder ruby_splat_argument_child.rel ( @ruby_splat_argument id, @ruby_underscore_arg child) id child
ruby_splat_argument_child.rel: delete
ruby_hash_splat_argument_def.rel: reorder ruby_hash_splat_argument_child.rel ( @ruby_hash_splat_argument id, @ruby_underscore_arg child) id child
ruby_hash_splat_argument_child.rel: delete