trim more fields that don't need to be pre-allocated

src/geo/point.js

@@ -20,7 +20,6 @@
             if (key) {
                 this._key = key;
             }
-            this.poly = null; // parent polygon
         }
 
         get key() {
@@ -38,7 +37,9 @@
     const PRO = Point.prototype;
 
     BASE.Point = Point;
+
     BASE.newPoint = newPoint;
+
     BASE.pointFromClipper = function(cp, z) {
         return newPoint(cp.X / CONF.clipper, cp.Y / CONF.clipper, z);
     };

src/geo/polygon.js

@@ -31,9 +31,10 @@
             this.id = seqid++; // polygon unique id
             this.open = false;
             this.points = []; // ordered array of points
-            this.parent = null; // enclosing parent polygon
             this.depth = 0; // depth nested from top parent (density for support fill)
-            if (points) this.addPoints(points);
+            if (points) {
+                this.addPoints(points);
+            }
         }
 
         get length() {
@@ -63,6 +64,7 @@
     }
 
     BASE.Polygon = Polygon;
+
     BASE.newPolygon = newPolygon;
 
     const PRO = Polygon.prototype;

src/kiri/main.js

@@ -2912,10 +2912,6 @@ console.log/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
         DOC.activeElement.blur();
     }
 
-    // function setExpert(bool) {
-    //     UC.setExpert(UI.expert.checked = settings.controller.expert = bool);
-    // }
-
     function getMode() {
         return settings.mode;
     }