Enable concave stars and poly-decomp setup

index.html

@@ -92,6 +92,8 @@
         </div>
 
         <script src="https://unpkg.com/matter-js@0.19.0/build/matter.min.js"></script>
+        <script src="https://cdn.jsdelivr.net/npm/poly-decomp@0.3.0/build/decomp.min.js"></script>
+        <script src="./decomp-setup.js"></script>
         <script src="./scenes/scene-grid.js"></script>
         <script src="./scenes/scene-balanced.js"></script>
         <script src="./scenes/scene-lowg.js"></script>