Huge rendering performance improvements and minor other changes, lots of refactorings

src/js/core/buffer_maintainer.js

@@ -27,6 +27,8 @@ export class BufferMaintainer {
 
         this.iterationIndex = 1;
         this.lastIteration = 0;
+
+        this.root.signals.gameFrameStarted.add(this.update, this);
     }
 
     /**

src/js/core/config.js

@@ -53,6 +53,8 @@ export const globalConfig = {
     beltSpeedItemsPerSecond: 2,
     minerSpeedItemsPerSecond: 0, // COMPUTED
 
+    defaultItemDiameter: 20,
+
     itemSpacingOnBelts: 0.63,
 
     wiresSpeedItemsPerSecond: 6,