Update memory-manager-concurrent

games/3dcity/assets/loader.svg

@@ -0,0 +1,26 @@
+
+<svg version="1.1" id="L6" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+  viewBox="0 0 100 100" enable-background="new 0 0 100 100" xml:space="preserve">
+   <rect fill="none" stroke="#fff" stroke-width="4" x="25" y="25" width="50" height="50">
+  <animateTransform
+     attributeName="transform"
+     dur="0.5s"
+     from="0 50 50"
+     to="180 50 50"
+     type="rotate"
+     id="strokeBox"
+     attributeType="XML"
+     begin="rectBox.end"/>
+  </rect>
+   <rect x="27" y="27" fill="#fff" width="46" height="50">
+  <animate
+     attributeName="height"
+     dur="1.3s"
+     attributeType="XML"
+     from="50" 
+     to="0"
+     id="rectBox" 
+     fill="freeze"
+     begin="0s;strokeBox.end"/>
+  </rect>
+</svg>