diff --git a/build/three.js b/build/three.js
index 602969670d14a0762d8d32d4359ed7372827e8ae..807ba225fc276d3d5d2f771dba766fab0a602c85 100644
--- a/build/three.js
+++ b/build/three.js
@@ -8953,6 +8953,18 @@ THREE.Light = function ( hex ) {
 };
 
 THREE.Light.prototype = Object.create( THREE.Object3D.prototype );
+
+THREE.Light.prototype.clone = function ( light ) {
+
+	if ( light === undefined ) light = new THREE.Light();
+
+	THREE.Object3D.prototype.clone.call( this, light );
+
+	light.color.copy( this.color );
+
+	return light;
+
+};
 /**
  * @author mrdoob / http://mrdoob.com/
  */
@@ -9087,7 +9099,8 @@ THREE.PointLight.prototype.clone = function () {
 
 	var light = new THREE.PointLight();
 
-	light.color.copy( this.color );
+	THREE.Light.prototype.clone.call( this, light );
+
 	light.position.copy( this.position );
 	light.intensity = this.intensity;
 	light.distance = this.distance;
diff --git a/build/three.min.js b/build/three.min.js
index d13fc5da408807f1749619916ad26436b35ba324..367a6b3c8708c2cbe1112211d2543305ee2bf00e 100644
--- a/build/three.min.js
+++ b/build/three.min.js
@@ -181,8 +181,8 @@ void 0===this.attributes.normal||void 0===this.attributes.uv)console.warn("Missi
 new THREE.Vector3,j[g]=new THREE.Vector3;var l,m,p,s,r,n,q,z,t,x,u,B,G,D,w,f=new THREE.Vector3,g=new THREE.Vector3,I,J,E,Z,A,S,F,H=this.offsets;E=0;for(Z=H.length;E<Z;++E){J=H[E].start;A=H[E].count;var K=H[E].index;I=J;for(J+=A;I<J;I+=3)A=K+b[I],S=K+b[I+1],F=K+b[I+2],l=c[3*A],m=c[3*A+1],p=c[3*A+2],s=c[3*S],r=c[3*S+1],n=c[3*S+2],q=c[3*F],z=c[3*F+1],t=c[3*F+2],x=e[2*A],u=e[2*A+1],B=e[2*S],G=e[2*S+1],D=e[2*F],w=e[2*F+1],s-=l,l=q-l,r-=m,m=z-m,n-=p,p=t-p,B-=x,x=D-x,G-=u,u=w-u,w=1/(B*u-x*G),f.set((u*s-
 G*l)*w,(u*r-G*m)*w,(u*n-G*p)*w),g.set((B*l-x*s)*w,(B*m-x*r)*w,(B*p-x*n)*w),i[A].add(f),i[S].add(f),i[F].add(f),j[A].add(g),j[S].add(g),j[F].add(g)}var N=new THREE.Vector3,fa=new THREE.Vector3,ma=new THREE.Vector3,eb=new THREE.Vector3,M,U,ja;E=0;for(Z=H.length;E<Z;++E){J=H[E].start;A=H[E].count;K=H[E].index;I=J;for(J+=A;I<J;I+=3)A=K+b[I],S=K+b[I+1],F=K+b[I+2],a(A),a(S),a(F)}this.tangentsNeedUpdate=this.hasTangents=!0}},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.Camera=function(){THREE.Object3D.call(this);this.matrixWorldInverse=new THREE.Matrix4;this.projectionMatrix=new THREE.Matrix4;this.projectionMatrixInverse=new THREE.Matrix4};THREE.Camera.prototype=Object.create(THREE.Object3D.prototype);THREE.Camera.prototype.lookAt=function(){var a=new THREE.Matrix4;return function(b){a.lookAt(this.position,b,this.up);!0===this.useQuaternion?this.quaternion.setFromRotationMatrix(a):this.rotation.setEulerFromRotationMatrix(a,this.eulerOrder)}}();THREE.OrthographicCamera=function(a,b,c,d,e,f){THREE.Camera.call(this);this.left=a;this.right=b;this.top=c;this.bottom=d;this.near=void 0!==e?e:0.1;this.far=void 0!==f?f:2E3;this.updateProjectionMatrix()};THREE.OrthographicCamera.prototype=Object.create(THREE.Camera.prototype);THREE.OrthographicCamera.prototype.updateProjectionMatrix=function(){this.projectionMatrix.makeOrthographic(this.left,this.right,this.top,this.bottom,this.near,this.far)};THREE.PerspectiveCamera=function(a,b,c,d){THREE.Camera.call(this);this.fov=void 0!==a?a:50;this.aspect=void 0!==b?b:1;this.near=void 0!==c?c:0.1;this.far=void 0!==d?d:2E3;this.updateProjectionMatrix()};THREE.PerspectiveCamera.prototype=Object.create(THREE.Camera.prototype);THREE.PerspectiveCamera.prototype.setLens=function(a,b){void 0===b&&(b=24);this.fov=2*THREE.Math.radToDeg(Math.atan(b/(2*a)));this.updateProjectionMatrix()};
 THREE.PerspectiveCamera.prototype.setViewOffset=function(a,b,c,d,e,f){this.fullWidth=a;this.fullHeight=b;this.x=c;this.y=d;this.width=e;this.height=f;this.updateProjectionMatrix()};
-THREE.PerspectiveCamera.prototype.updateProjectionMatrix=function(){if(this.fullWidth){var a=this.fullWidth/this.fullHeight,b=Math.tan(THREE.Math.degToRad(0.5*this.fov))*this.near,c=-b,d=a*c,a=Math.abs(a*b-d),c=Math.abs(b-c);this.projectionMatrix.makeFrustum(d+this.x*a/this.fullWidth,d+(this.x+this.width)*a/this.fullWidth,b-(this.y+this.height)*c/this.fullHeight,b-this.y*c/this.fullHeight,this.near,this.far)}else this.projectionMatrix.makePerspective(this.fov,this.aspect,this.near,this.far)};THREE.Light=function(a){THREE.Object3D.call(this);this.color=new THREE.Color(a)};THREE.Light.prototype=Object.create(THREE.Object3D.prototype);THREE.AmbientLight=function(a){THREE.Light.call(this,a)};THREE.AmbientLight.prototype=Object.create(THREE.Light.prototype);THREE.AreaLight=function(a,b){THREE.Light.call(this,a);this.normal=new THREE.Vector3(0,-1,0);this.right=new THREE.Vector3(1,0,0);this.intensity=void 0!==b?b:1;this.height=this.width=1;this.constantAttenuation=1.5;this.linearAttenuation=0.5;this.quadraticAttenuation=0.1};THREE.AreaLight.prototype=Object.create(THREE.Light.prototype);THREE.DirectionalLight=function(a,b){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,1,0);this.target=new THREE.Object3D;this.intensity=void 0!==b?b:1;this.onlyShadow=this.castShadow=!1;this.shadowCameraNear=50;this.shadowCameraFar=5E3;this.shadowCameraLeft=-500;this.shadowCameraTop=this.shadowCameraRight=500;this.shadowCameraBottom=-500;this.shadowCameraVisible=!1;this.shadowBias=0;this.shadowDarkness=0.5;this.shadowMapHeight=this.shadowMapWidth=512;this.shadowCascade=!1;this.shadowCascadeOffset=
-new THREE.Vector3(0,0,-1E3);this.shadowCascadeCount=2;this.shadowCascadeBias=[0,0,0];this.shadowCascadeWidth=[512,512,512];this.shadowCascadeHeight=[512,512,512];this.shadowCascadeNearZ=[-1,0.99,0.998];this.shadowCascadeFarZ=[0.99,0.998,1];this.shadowCascadeArray=[];this.shadowMatrix=this.shadowCamera=this.shadowMapSize=this.shadowMap=null};THREE.DirectionalLight.prototype=Object.create(THREE.Light.prototype);THREE.HemisphereLight=function(a,b,c){THREE.Light.call(this,a);this.groundColor=new THREE.Color(b);this.position=new THREE.Vector3(0,100,0);this.intensity=void 0!==c?c:1};THREE.HemisphereLight.prototype=Object.create(THREE.Light.prototype);THREE.PointLight=function(a,b,c){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,0,0);this.intensity=void 0!==b?b:1;this.distance=void 0!==c?c:0};THREE.PointLight.prototype=Object.create(THREE.Light.prototype);THREE.PointLight.prototype.clone=function(){var a=new THREE.PointLight;a.color.copy(this.color);a.position.copy(this.position);a.intensity=this.intensity;a.distance=this.distance;return a};THREE.SpotLight=function(a,b,c,d,e){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,1,0);this.target=new THREE.Object3D;this.intensity=void 0!==b?b:1;this.distance=void 0!==c?c:0;this.angle=void 0!==d?d:Math.PI/2;this.exponent=void 0!==e?e:10;this.onlyShadow=this.castShadow=!1;this.shadowCameraNear=50;this.shadowCameraFar=5E3;this.shadowCameraFov=50;this.shadowCameraVisible=!1;this.shadowBias=0;this.shadowDarkness=0.5;this.shadowMapHeight=this.shadowMapWidth=512;this.shadowMatrix=this.shadowCamera=
+THREE.PerspectiveCamera.prototype.updateProjectionMatrix=function(){if(this.fullWidth){var a=this.fullWidth/this.fullHeight,b=Math.tan(THREE.Math.degToRad(0.5*this.fov))*this.near,c=-b,d=a*c,a=Math.abs(a*b-d),c=Math.abs(b-c);this.projectionMatrix.makeFrustum(d+this.x*a/this.fullWidth,d+(this.x+this.width)*a/this.fullWidth,b-(this.y+this.height)*c/this.fullHeight,b-this.y*c/this.fullHeight,this.near,this.far)}else this.projectionMatrix.makePerspective(this.fov,this.aspect,this.near,this.far)};THREE.Light=function(a){THREE.Object3D.call(this);this.color=new THREE.Color(a)};THREE.Light.prototype=Object.create(THREE.Object3D.prototype);THREE.Light.prototype.clone=function(a){void 0===a&&(a=new THREE.Light);THREE.Object3D.prototype.clone.call(this,a);a.color.copy(this.color);return a};THREE.AmbientLight=function(a){THREE.Light.call(this,a)};THREE.AmbientLight.prototype=Object.create(THREE.Light.prototype);THREE.AreaLight=function(a,b){THREE.Light.call(this,a);this.normal=new THREE.Vector3(0,-1,0);this.right=new THREE.Vector3(1,0,0);this.intensity=void 0!==b?b:1;this.height=this.width=1;this.constantAttenuation=1.5;this.linearAttenuation=0.5;this.quadraticAttenuation=0.1};THREE.AreaLight.prototype=Object.create(THREE.Light.prototype);THREE.DirectionalLight=function(a,b){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,1,0);this.target=new THREE.Object3D;this.intensity=void 0!==b?b:1;this.onlyShadow=this.castShadow=!1;this.shadowCameraNear=50;this.shadowCameraFar=5E3;this.shadowCameraLeft=-500;this.shadowCameraTop=this.shadowCameraRight=500;this.shadowCameraBottom=-500;this.shadowCameraVisible=!1;this.shadowBias=0;this.shadowDarkness=0.5;this.shadowMapHeight=this.shadowMapWidth=512;this.shadowCascade=!1;this.shadowCascadeOffset=
+new THREE.Vector3(0,0,-1E3);this.shadowCascadeCount=2;this.shadowCascadeBias=[0,0,0];this.shadowCascadeWidth=[512,512,512];this.shadowCascadeHeight=[512,512,512];this.shadowCascadeNearZ=[-1,0.99,0.998];this.shadowCascadeFarZ=[0.99,0.998,1];this.shadowCascadeArray=[];this.shadowMatrix=this.shadowCamera=this.shadowMapSize=this.shadowMap=null};THREE.DirectionalLight.prototype=Object.create(THREE.Light.prototype);THREE.HemisphereLight=function(a,b,c){THREE.Light.call(this,a);this.groundColor=new THREE.Color(b);this.position=new THREE.Vector3(0,100,0);this.intensity=void 0!==c?c:1};THREE.HemisphereLight.prototype=Object.create(THREE.Light.prototype);THREE.PointLight=function(a,b,c){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,0,0);this.intensity=void 0!==b?b:1;this.distance=void 0!==c?c:0};THREE.PointLight.prototype=Object.create(THREE.Light.prototype);THREE.PointLight.prototype.clone=function(){var a=new THREE.PointLight;THREE.Light.prototype.clone.call(this,a);a.position.copy(this.position);a.intensity=this.intensity;a.distance=this.distance;return a};THREE.SpotLight=function(a,b,c,d,e){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,1,0);this.target=new THREE.Object3D;this.intensity=void 0!==b?b:1;this.distance=void 0!==c?c:0;this.angle=void 0!==d?d:Math.PI/2;this.exponent=void 0!==e?e:10;this.onlyShadow=this.castShadow=!1;this.shadowCameraNear=50;this.shadowCameraFar=5E3;this.shadowCameraFov=50;this.shadowCameraVisible=!1;this.shadowBias=0;this.shadowDarkness=0.5;this.shadowMapHeight=this.shadowMapWidth=512;this.shadowMatrix=this.shadowCamera=
 this.shadowMapSize=this.shadowMap=null};THREE.SpotLight.prototype=Object.create(THREE.Light.prototype);THREE.Loader=function(a){this.statusDomElement=(this.showStatus=a)?THREE.Loader.prototype.addStatusElement():null;this.onLoadStart=function(){};this.onLoadProgress=function(){};this.onLoadComplete=function(){}};
 THREE.Loader.prototype={constructor:THREE.Loader,crossOrigin:"anonymous",addStatusElement:function(){var a=document.createElement("div");a.style.position="absolute";a.style.right="0px";a.style.top="0px";a.style.fontSize="0.8em";a.style.textAlign="left";a.style.background="rgba(0,0,0,0.25)";a.style.color="#fff";a.style.width="120px";a.style.padding="0.5em 0.5em 0.5em 0.5em";a.style.zIndex=1E3;a.innerHTML="Loading ...";return a},updateProgress:function(a){var b="Loaded ",b=a.total?b+((100*a.loaded/
 a.total).toFixed(0)+"%"):b+((a.loaded/1E3).toFixed(2)+" KB");this.statusDomElement.innerHTML=b},extractUrlBase:function(a){a=a.split("/");a.pop();return(1>a.length?".":a.join("/"))+"/"},initMaterials:function(a,b){for(var c=[],d=0;d<a.length;++d)c[d]=THREE.Loader.prototype.createMaterial(a[d],b);return c},needsTangents:function(a){for(var b=0,c=a.length;b<c;b++)if(a[b]instanceof THREE.ShaderMaterial)return!0;return!1},createMaterial:function(a,b){function c(a){a=Math.log(a)/Math.LN2;return Math.floor(a)==