Improve PaysFee trait and dispatch info logic in utility module (#4606)

* pass target to PaysFee trait and allow batch call to be free if all its calls are free

* bump version

* fix error

substrate/frame/example/src/lib.rs

@@ -301,8 +301,8 @@ impl<T: pallet_balances::Trait> ClassifyDispatch<(&BalanceOf<T>,)> for WeightFor
 	}
 }
 
-impl<T: pallet_balances::Trait> PaysFee for WeightForSetDummy<T> {
-	fn pays_fee(&self) -> bool {
+impl<T: pallet_balances::Trait> PaysFee<(&BalanceOf<T>,)> for WeightForSetDummy<T> {
+	fn pays_fee(&self, _target: (&BalanceOf<T>,)) -> bool {
 		true
 	}
 }