update aframe

public/vwf/model/aframe/aframe-master.js

@@ -68231,6 +68231,7 @@ module.exports.Component = registerComponent('cursor', {
   },
 
   onEnterVR: function () {
+    this.clearCurrentIntersection(true);
     var xrSession = this.el.sceneEl.xrSession;
     var self = this;
     if (!xrSession) { return; }
@@ -80074,7 +80075,9 @@ module.exports.AScene = registerElement('a-scene', {
           AEntity.prototype.play.call(this);  // .play() *before* render.
 
           // WebXR Immersive navigation handler.
-          navigator.xr.addEventListener('sessiongranted', function () { sceneEl.enterVR(); });
+          if (this.hasWebXR && navigator.xr.addEventListener) {
+            navigator.xr.addEventListener('sessiongranted', function () { sceneEl.enterVR(); });
+          }
 
           if (sceneEl.renderStarted) { return; }
           sceneEl.resize();
@@ -82131,7 +82134,7 @@ _dereq_('./core/a-mixin');
 _dereq_('./extras/components/');
 _dereq_('./extras/primitives/');
 
-console.log('A-Frame Version: 1.0.4 (Date 2020-05-05, Commit #62617e23)');
+console.log('A-Frame Version: 1.0.4 (Date 2020-05-07, Commit #9022b97e)');
 console.log('THREE Version (https://github.com/supermedium/three.js):',
             pkg.dependencies['super-three']);
 console.log('WebVR Polyfill Version:', pkg.dependencies['webvr-polyfill']);