Minor stylistic changes

Just a few spaces and an intermediate veriable to make the code look a
little bit nicer.

src/core/replication_rules.rs

@@ -174,6 +174,7 @@ impl AppRuleExt for App {
         self.world_mut()
             .resource_mut::<ReplicationRules>()
             .insert(rule);
+
         self
     }
 
@@ -187,6 +188,7 @@ impl AppRuleExt for App {
         self.world_mut()
             .resource_mut::<ReplicationRules>()
             .insert(rule);
+
         self
     }
 }

tests/changes.rs

@@ -469,6 +469,7 @@ fn marker_with_history_old_update() {
         .world()
         .get::<BoolHistory>(client_entity)
         .unwrap();
+
     assert_eq!(
         history.0,
         [false],

tests/removal.rs

@@ -128,6 +128,7 @@ fn marker() {
         .world_mut()
         .spawn((Replicated, OriginalComponent))
         .id();
+
     let client_entity = client_app.world_mut().spawn(ReplaceMarker).id();
 
     let client = client_app.world().resource::<RepliconClient>();

tests/server_event.rs

@@ -198,10 +198,8 @@ fn event_queue() {
     server_app.exchange_with_client(&mut client_app);
     client_app.update();
 
-    assert!(client_app
-        .world()
-        .resource::<Events<DummyEvent>>()
-        .is_empty());
+    let events = client_app.world().resource::<Events<DummyEvent>>();
+    assert!(events.is_empty());
 
     // Restore the init tick to receive the event.
     *client_app.world_mut().resource_mut::<ServerInitTick>() = previous_tick;