skip phantom for decl_event (#2158)

* use parity-codec-derive from parity-codec everywhere

* codec v3.2 -> v3.3

* skip phantom when deriving event

* fix decl_module call

* update impl version of node + builds

substrate/srml/support/src/dispatch.rs

@@ -257,7 +257,7 @@ macro_rules! decl_module {
 		fn offchain_worker($($param_name:ident : $param:ty),* ) { $( $impl:tt )* }
 		$($rest:tt)*
 	) => {
-		decl_module!(@normalize
+		$crate::decl_module!(@normalize
 			$(#[$attr])*
 			pub struct $mod_type<$trait_instance: $trait_name>
 			for enum $call_type where origin: $origin_type, system = $system

substrate/srml/support/src/event.rs

@@ -292,6 +292,7 @@ macro_rules! __decl_generic_event {
 			)*
 			$(
 				#[doc(hidden)]
+				#[codec(skip)]
 				PhantomData($crate::rstd::marker::PhantomData<$instance>),
 			)?
 		}