updated molstar and volume streaming header (density)

package.json

@@ -50,7 +50,7 @@
         "extra-watch-webpack-plugin": "^1.0.3",
         "file-loader": "^6.0.0",
         "mini-css-extract-plugin": "^0.9.0",
-        "molstar": "^0.6.5",
+        "molstar": "^0.6.6",
         "node-fetch": "^2.6.0",
         "node-sass": "^4.13.1",
         "raw-loader": "^4.0.0",

src/structure-viewer/ui/controls.tsx

@@ -35,7 +35,7 @@ export class StructureTools extends PluginUIComponent {
             <StructureSourceControls />
             <StructureMeasurementsControls initiallyCollapsed={collapsed.measurements}  />
             <StructureComponentControls initiallyCollapsed={collapsed.component}  />
-            <VolumeStreamingControls initiallyCollapsed={collapsed.volume}  />
+            <VolumeStreamingControls header='Density' initiallyCollapsed={collapsed.volume}  />
 
             <CustomStructureControls initiallyCollapsed={collapsed.custom} />
         </>;