switch to fxhash

src/layout/ui.rs

@@ -236,7 +236,7 @@ impl Widgets {
     pub fn new() -> Self {
         Self {
             ids: IdTracker::default(),
-            map: HashMap::new(),
+            map: HashMap::default(),
         }
     }
 
@@ -298,7 +298,7 @@ impl Widgets {
             WidgetData {
                 widget,
                 label,
-                sized_children: HashSet::new(),
+                sized_children: HashSet::default(),
                 borrowed: false,
                 sensor: false,
             },