title: setEulerFromRotationMatrix does not exist in three.js?
body: <p>I am trying to use the following to rotate my mesh on its own y axis:</p>
  
  <blockquote>
    <p>// Rotate an object around an arbitrary axis in object space var
    rotObjectMatrix; function rotateAroundObjectAxis(object, axis,
    radians) {
        rotObjectMatrix = new THREE.Matrix4();
        rotObjectMatrix.makeRotationAxis(axis.normalize(), radians);
        object.matrix.multiplySelf(rotObjectMatrix);      // post-multiply</p>
  
  <pre><code>// new code for Three.js r50+
  object.rotation.setEulerFromRotationMatrix(object.matrix);
  
  // old code for Three.js r49 and earlier:
  // object.rotation.getRotationFromMatrix(object.matrix, object.scale); }
  </code></pre>
  </blockquote>
  
  <p>THe problem is I am getting a "Object has no method 'setEulerFromRotationMatrix'". Has this method been deprecated? How do I get around this?</p>