allow trailling comma in decl_event (#2117)

* allow trailling comma in decl_event

* Update srml/support/src/event.rs

Co-Authored-By: xlc <xlchen1291@gmail.com>

* Update srml/support/src/event.rs

Co-Authored-By: xlc <xlchen1291@gmail.com>

* Update srml/support/src/event.rs

Co-Authored-By: xlc <xlchen1291@gmail.com>

* Update srml/support/src/event.rs

Co-Authored-By: xlc <xlchen1291@gmail.com>

* Update srml/support/src/event.rs

Co-Authored-By: xlc <xlchen1291@gmail.com>

* bump version and update wasm

substrate/node/runtime/src/lib.rs

@@ -59,7 +59,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	impl_name: create_runtime_str!("substrate-node"),
 	authoring_version: 10,
 	spec_version: 48,
-	impl_version: 48,
+	impl_version: 49,
 	apis: RUNTIME_API_VERSIONS,
 };