diff --git a/LICENSE b/LICENSE
index 1403da6e..0de4f0b6 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2010 sole http://soledadpenades.com, Mr.doob http://mrdoob.com
+Copyright (c) 2010-2012 Tween.js authors.
 
 Easing equations Copyright (c) 2001 Robert Penner http://robertpenner.com/easing/
 
diff --git a/README.md b/README.md
index 2c456328..2d480350 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,15 @@
 tween.js
 ========
 
-### Javascript Tweening Engine ###
+#### Javascript Tweening Engine ####
 
 [![Flattr this](https://api.flattr.com/button/flattr-badge-large.png)](https://flattr.com/thing/45014/tween-js)
 
 Super simple, fast and easy to use tweening engine which incorporates optimised Robert Penner's equations.
 
-We are still developing this so the API might change from commit to commit.
+[Contributors](http://github.com/sole/tween.js/contributors)
 
-## Examples ##
+### Examples ###
 
 [![Tween autostart](http://sole.github.com/tween.js/assets/examples/07_autostart.png)](http://sole.github.com/tween.js/examples/07_autostart.html)
 [![Video and time](http://sole.github.com/tween.js/assets/examples/06_video_and_time.png)](http://sole.github.com/tween.js/examples/06_video_and_time.html)
@@ -20,7 +20,7 @@ We are still developing this so the API might change from commit to commit.
 [![Bars](http://sole.github.com/tween.js/assets/examples/01_bars.png)](http://sole.github.com/tween.js/examples/01_bars.html)
 [![hello world](http://sole.github.com/tween.js/assets/examples/00_hello_world.png)](http://sole.github.com/tween.js/examples/00_hello_world.html)
 
-## Projects using tween.js ##
+### Projects using tween.js ###
 
 [![Minesweeper 3D](http://sole.github.com/tween.js/assets/projects/06_minesweeper3d.png)](http://egraether.com/mine3d/)
 [![ROME](http://sole.github.com/tween.js/assets/projects/05_rome.png)](http://ro.me)
@@ -30,7 +30,7 @@ We are still developing this so the API might change from commit to commit.
 [![The Wilderness Downtown](http://sole.github.com/tween.js/assets/projects/01_wilderness.png)](http://thewildernessdowntown.com/)
 [![Linechart](http://sole.github.com/tween.js/assets/projects/00_linechart.png)](http://dejavis.org/linechart)
 
-## Usage ##
+### Usage ###
 
 Download the [minified library](http://github.com/sole/tween.js/raw/master/build/Tween.js) and include it in your html.
 
@@ -70,24 +70,31 @@ Have a look at that folder to discover more functionalities of the library!
 
 Also, Jerome Etienne has written a [tutorial](http://learningthreejs.com/blog/2011/08/17/tweenjs-for-smooth-animation/) demonstrating how to use tween.js with three.js, and it's also great for understanding how tweens work!
 
-## Frequently Asked Questions (FAQ) ##
+### FAQ ###
 
-**Is there a way to control when is update() called? I'd like to use my own interval.**
-
-Yes, simply don't call `TWEEN.start()`, and run `TWEEN.update()` in your own periodically executing function instead.
-	
 **How do you set a tween to start after a while?**
 
-Use the `delay()` method: `var t = new Tween({...}).delay(1000);`
+Use the `delay()` method: `var t = new TWEEN.Tween({...}).delay(1000);`
 
 **Is there a jQuery plug-in?**
 
 No, we like to keep it simple and free of dependencies. Feel free to make one yourself, though! :-)
 
 
-## Change log ##
+### Change log ###
+
+2012 04 10 - **r6** (4,707 KB, gzip: 1,630 KB)
+
+* Returning instance also in `.chain()`. ([mrdoob](http://github.com/mrdoob))
+* Refactoring and code clean up. ([egraether](http://github.com/egraether))
+* Simplified easing formulas. ([infusion](http://github.com/infusion))
+* Added support to arrays in `.to()` using linear, catmull-rom or bezier `.interpolation()`. ([egraether](http://github.com/egraether))
+* Removed autostart/stop. ([mrdoob](http://github.com/mrdoob))
+* Renamed `EaseNone`, `EaseIn`, `EaseOut` ane `EaseInOut`, to `None`, `In`, `Out` and `InOut`. ([mrdoob](http://github.com/mrdoob))
+* Made `.to()` values dynamic. ([egraether](http://github.com/egraether) and [jeromeetienne](http://github.com/jeromeetienne))
 
-2011 10 15 - **r5**
+
+2011 10 15 - **r5** (4,733 KB, gzip: 1,379 KB)
 
 * Add autostart/stop functionalities ([jocafa](http://github.com/jocafa) and [sole](http://github.com/sole))
 * Add 07_autostart example demonstrating the new functionalities ([sole](http://github.com/sole))
@@ -97,22 +104,19 @@ No, we like to keep it simple and free of dependencies. Feel free to make one yo
 
 * Use ``Date.now()`` instead of ``new Date.getTime()`` as it's faster ([mrdoob](http://github.com/mrdoob))
 
+
 2011 09 30 - **r3**
 
 * Added new ``time`` parameter to TWEEN.update, in order to allow synchronizing the tweens to an external timeline ([lechecacharro](http://github.com/lechecacharro))
 * Added example to demonstrate the new synchronizing feature. ([sole](http://github.com/sole))
 
+
 2011 06 18 - **r2**
 
 * Added new utility methods getAll and removeAll for getting and removing all tweens ([Paul Lewis](http://github.com/paullewis))
 
+
 2011 05 18 - **r1**
 
 * Started using revision numbers in the build file
 * Consider this kind of an stable revision :-)
-
-## Contributors ##
-
-People who have contributed directly or indirectly to this project :-D
-
-[sole](http://soledadpenades.com), [mrdoob](http://mrdoob.com), [Robert Eisele](http://www.xarg.org/), [Robert Penner](http://www.robertpenner.com/), [Philippe Elsass](http://philippe.elsass.me), [Paul Lewis](http://www.aerotwist.com/), Lechecacharro
diff --git a/REVISION b/REVISION
deleted file mode 100644
index 7ed6ff82..00000000
--- a/REVISION
+++ /dev/null
@@ -1 +0,0 @@
-5
diff --git a/build/Tween.js b/build/Tween.js
index a32f733d..03356d8a 100644
--- a/build/Tween.js
+++ b/build/Tween.js
@@ -1,13 +1,12 @@
-// tween.js r5 - http://github.com/sole/tween.js
-var TWEEN=TWEEN||function(){var a,e,c=60,b=false,h=[],i;return{setFPS:function(f){c=f||60},start:function(f){arguments.length!=0&&this.setFPS(f);e=setInterval(this.update,1E3/c)},stop:function(){clearInterval(e)},setAutostart:function(f){(b=f)&&!e&&this.start()},add:function(f){h.push(f);b&&!e&&this.start()},getAll:function(){return h},removeAll:function(){h=[]},remove:function(f){a=h.indexOf(f);a!==-1&&h.splice(a,1)},update:function(f){a=0;i=h.length;for(f=f||Date.now();a<i;)if(h[a].update(f))a++;
-else{h.splice(a,1);i--}i==0&&b==true&&this.stop()}}}();
-TWEEN.Tween=function(a){var e={},c={},b={},h=1E3,i=0,f=null,n=TWEEN.Easing.Linear.EaseNone,k=null,l=null,m=null;this.to=function(d,g){if(g!==null)h=g;for(var j in d)if(a[j]!==null)b[j]=d[j];return this};this.start=function(d){TWEEN.add(this);f=d?d+i:Date.now()+i;for(var g in b)if(a[g]!==null){e[g]=a[g];c[g]=b[g]-a[g]}return this};this.stop=function(){TWEEN.remove(this);return this};this.delay=function(d){i=d;return this};this.easing=function(d){n=d;return this};this.chain=function(d){k=d};this.onUpdate=
-function(d){l=d;return this};this.onComplete=function(d){m=d;return this};this.update=function(d){var g,j;if(d<f)return true;d=(d-f)/h;d=d>1?1:d;j=n(d);for(g in c)a[g]=e[g]+c[g]*j;l!==null&&l.call(a,j);if(d==1){m!==null&&m.call(a);k!==null&&k.start();return false}return true}};TWEEN.Easing={Linear:{},Quadratic:{},Cubic:{},Quartic:{},Quintic:{},Sinusoidal:{},Exponential:{},Circular:{},Elastic:{},Back:{},Bounce:{}};TWEEN.Easing.Linear.EaseNone=function(a){return a};
-TWEEN.Easing.Quadratic.EaseIn=function(a){return a*a};TWEEN.Easing.Quadratic.EaseOut=function(a){return-a*(a-2)};TWEEN.Easing.Quadratic.EaseInOut=function(a){if((a*=2)<1)return 0.5*a*a;return-0.5*(--a*(a-2)-1)};TWEEN.Easing.Cubic.EaseIn=function(a){return a*a*a};TWEEN.Easing.Cubic.EaseOut=function(a){return--a*a*a+1};TWEEN.Easing.Cubic.EaseInOut=function(a){if((a*=2)<1)return 0.5*a*a*a;return 0.5*((a-=2)*a*a+2)};TWEEN.Easing.Quartic.EaseIn=function(a){return a*a*a*a};
-TWEEN.Easing.Quartic.EaseOut=function(a){return-(--a*a*a*a-1)};TWEEN.Easing.Quartic.EaseInOut=function(a){if((a*=2)<1)return 0.5*a*a*a*a;return-0.5*((a-=2)*a*a*a-2)};TWEEN.Easing.Quintic.EaseIn=function(a){return a*a*a*a*a};TWEEN.Easing.Quintic.EaseOut=function(a){return(a-=1)*a*a*a*a+1};TWEEN.Easing.Quintic.EaseInOut=function(a){if((a*=2)<1)return 0.5*a*a*a*a*a;return 0.5*((a-=2)*a*a*a*a+2)};TWEEN.Easing.Sinusoidal.EaseIn=function(a){return-Math.cos(a*Math.PI/2)+1};
-TWEEN.Easing.Sinusoidal.EaseOut=function(a){return Math.sin(a*Math.PI/2)};TWEEN.Easing.Sinusoidal.EaseInOut=function(a){return-0.5*(Math.cos(Math.PI*a)-1)};TWEEN.Easing.Exponential.EaseIn=function(a){return a==0?0:Math.pow(2,10*(a-1))};TWEEN.Easing.Exponential.EaseOut=function(a){return a==1?1:-Math.pow(2,-10*a)+1};TWEEN.Easing.Exponential.EaseInOut=function(a){if(a==0)return 0;if(a==1)return 1;if((a*=2)<1)return 0.5*Math.pow(2,10*(a-1));return 0.5*(-Math.pow(2,-10*(a-1))+2)};
-TWEEN.Easing.Circular.EaseIn=function(a){return-(Math.sqrt(1-a*a)-1)};TWEEN.Easing.Circular.EaseOut=function(a){return Math.sqrt(1- --a*a)};TWEEN.Easing.Circular.EaseInOut=function(a){if((a/=0.5)<1)return-0.5*(Math.sqrt(1-a*a)-1);return 0.5*(Math.sqrt(1-(a-=2)*a)+1)};TWEEN.Easing.Elastic.EaseIn=function(a){var e,c=0.1,b=0.4;if(a==0)return 0;if(a==1)return 1;b||(b=0.3);if(!c||c<1){c=1;e=b/4}else e=b/(2*Math.PI)*Math.asin(1/c);return-(c*Math.pow(2,10*(a-=1))*Math.sin((a-e)*2*Math.PI/b))};
-TWEEN.Easing.Elastic.EaseOut=function(a){var e,c=0.1,b=0.4;if(a==0)return 0;if(a==1)return 1;b||(b=0.3);if(!c||c<1){c=1;e=b/4}else e=b/(2*Math.PI)*Math.asin(1/c);return c*Math.pow(2,-10*a)*Math.sin((a-e)*2*Math.PI/b)+1};
-TWEEN.Easing.Elastic.EaseInOut=function(a){var e,c=0.1,b=0.4;if(a==0)return 0;if(a==1)return 1;b||(b=0.3);if(!c||c<1){c=1;e=b/4}else e=b/(2*Math.PI)*Math.asin(1/c);if((a*=2)<1)return-0.5*c*Math.pow(2,10*(a-=1))*Math.sin((a-e)*2*Math.PI/b);return c*Math.pow(2,-10*(a-=1))*Math.sin((a-e)*2*Math.PI/b)*0.5+1};TWEEN.Easing.Back.EaseIn=function(a){return a*a*(2.70158*a-1.70158)};TWEEN.Easing.Back.EaseOut=function(a){return(a-=1)*a*(2.70158*a+1.70158)+1};
-TWEEN.Easing.Back.EaseInOut=function(a){if((a*=2)<1)return 0.5*a*a*(3.5949095*a-2.5949095);return 0.5*((a-=2)*a*(3.5949095*a+2.5949095)+2)};TWEEN.Easing.Bounce.EaseIn=function(a){return 1-TWEEN.Easing.Bounce.EaseOut(1-a)};TWEEN.Easing.Bounce.EaseOut=function(a){return(a/=1)<1/2.75?7.5625*a*a:a<2/2.75?7.5625*(a-=1.5/2.75)*a+0.75:a<2.5/2.75?7.5625*(a-=2.25/2.75)*a+0.9375:7.5625*(a-=2.625/2.75)*a+0.984375};
-TWEEN.Easing.Bounce.EaseInOut=function(a){if(a<0.5)return TWEEN.Easing.Bounce.EaseIn(a*2)*0.5;return TWEEN.Easing.Bounce.EaseOut(a*2-1)*0.5+0.5};
+// Tween.js - http://github.com/sole/tween.js
+var TWEEN=TWEEN||function(){var a=[];return{REVISION:"6",getAll:function(){return a},removeAll:function(){a=[]},add:function(c){a.push(c)},remove:function(c){c=a.indexOf(c);-1!==c&&a.splice(c,1)},update:function(c){for(var b=0,e=a.length,c=void 0!==c?c:Date.now();b<e;)a[b].update(c)?b++:(a.splice(b,1),e--)}}}();
+TWEEN.Tween=function(a){var c={},b={},e=1E3,d=0,f=null,h=TWEEN.Easing.Linear.None,n=TWEEN.Interpolation.Linear,j=null,k=null,l=null;this.to=function(a,c){null!==c&&(e=c);b=a;return this};this.start=function(e){TWEEN.add(this);f=void 0!==e?e:Date.now();f+=d;for(var g in b)if(null!==a[g]){if(b[g]instanceof Array){if(0===b[g].length)continue;b[g]=[a[g]].concat(b[g])}c[g]=a[g]}return this};this.stop=function(){TWEEN.remove(this);return this};this.delay=function(a){d=a;return this};this.easing=function(a){h=
+a;return this};this.interpolation=function(a){n=a;return this};this.chain=function(a){j=a;return this};this.onUpdate=function(a){k=a;return this};this.onComplete=function(a){l=a;return this};this.update=function(d){if(d<f)return!0;var d=(d-f)/e,d=1<d?1:d,g=h(d),i;for(i in c){var o=c[i],m=b[i];a[i]=m instanceof Array?n(m,g):o+(m-o)*g}null!==k&&k.call(a,g);return 1==d?(null!==l&&l.call(a),null!==j&&j.start(),!1):!0}};
+TWEEN.Easing={Linear:{None:function(a){return a}},Quadratic:{In:function(a){return a*a},Out:function(a){return a*(2-a)},InOut:function(a){return 1>(a*=2)?0.5*a*a:-0.5*(--a*(a-2)-1)}},Cubic:{In:function(a){return a*a*a},Out:function(a){return--a*a*a+1},InOut:function(a){return 1>(a*=2)?0.5*a*a*a:0.5*((a-=2)*a*a+2)}},Quartic:{In:function(a){return a*a*a*a},Out:function(a){return 1- --a*a*a*a},InOut:function(a){return 1>(a*=2)?0.5*a*a*a*a:-0.5*((a-=2)*a*a*a-2)}},Quintic:{In:function(a){return a*a*a*
+a*a},Out:function(a){return--a*a*a*a*a+1},InOut:function(a){return 1>(a*=2)?0.5*a*a*a*a*a:0.5*((a-=2)*a*a*a*a+2)}},Sinusoidal:{In:function(a){return 1-Math.cos(a*Math.PI/2)},Out:function(a){return Math.sin(a*Math.PI/2)},InOut:function(a){return 0.5*(1-Math.cos(Math.PI*a))}},Exponential:{In:function(a){return 0===a?0:Math.pow(1024,a-1)},Out:function(a){return 1===a?1:1-Math.pow(2,-10*a)},InOut:function(a){return 0===a?0:1===a?1:1>(a*=2)?0.5*Math.pow(1024,a-1):0.5*(-Math.pow(2,-10*(a-1))+2)}},Circular:{In:function(a){return 1-
+Math.sqrt(1-a*a)},Out:function(a){return Math.sqrt(1- --a*a)},InOut:function(a){return 1>(a*=2)?-0.5*(Math.sqrt(1-a*a)-1):0.5*(Math.sqrt(1-(a-=2)*a)+1)}},Elastic:{In:function(a){var c,b=0.1;if(0===a)return 0;if(1===a)return 1;!b||1>b?(b=1,c=0.1):c=0.4*Math.asin(1/b)/(2*Math.PI);return-(b*Math.pow(2,10*(a-=1))*Math.sin((a-c)*2*Math.PI/0.4))},Out:function(a){var c,b=0.1;if(0===a)return 0;if(1===a)return 1;!b||1>b?(b=1,c=0.1):c=0.4*Math.asin(1/b)/(2*Math.PI);return b*Math.pow(2,-10*a)*Math.sin((a-c)*
+2*Math.PI/0.4)+1},InOut:function(a){var c,b=0.1;if(0===a)return 0;if(1===a)return 1;!b||1>b?(b=1,c=0.1):c=0.4*Math.asin(1/b)/(2*Math.PI);return 1>(a*=2)?-0.5*b*Math.pow(2,10*(a-=1))*Math.sin((a-c)*2*Math.PI/0.4):0.5*b*Math.pow(2,-10*(a-=1))*Math.sin((a-c)*2*Math.PI/0.4)+1}},Back:{In:function(a){return a*a*(2.70158*a-1.70158)},Out:function(a){return--a*a*(2.70158*a+1.70158)+1},InOut:function(a){return 1>(a*=2)?0.5*a*a*(3.5949095*a-2.5949095):0.5*((a-=2)*a*(3.5949095*a+2.5949095)+2)}},Bounce:{In:function(a){return 1-
+TWEEN.Easing.Bounce.Out(1-a)},Out:function(a){return a<1/2.75?7.5625*a*a:a<2/2.75?7.5625*(a-=1.5/2.75)*a+0.75:a<2.5/2.75?7.5625*(a-=2.25/2.75)*a+0.9375:7.5625*(a-=2.625/2.75)*a+0.984375},InOut:function(a){return 0.5>a?0.5*TWEEN.Easing.Bounce.In(2*a):0.5*TWEEN.Easing.Bounce.Out(2*a-1)+0.5}}};
+TWEEN.Interpolation={Linear:function(a,c){var b=a.length-1,e=b*c,d=Math.floor(e),f=TWEEN.Interpolation.Utils.Linear;return 0>c?f(a[0],a[1],e):1<c?f(a[b],a[b-1],b-e):f(a[d],a[d+1>b?b:d+1],e-d)},Bezier:function(a,c){var b=0,e=a.length-1,d=Math.pow,f=TWEEN.Interpolation.Utils.Bernstein,h;for(h=0;h<=e;h++)b+=d(1-c,e-h)*d(c,h)*a[h]*f(e,h);return b},CatmullRom:function(a,c){var b=a.length-1,e=b*c,d=Math.floor(e),f=TWEEN.Interpolation.Utils.CatmullRom;return a[0]===a[b]?(0>c&&(d=Math.floor(e=b*(1+c))),f(a[(d-
+1+b)%b],a[d],a[(d+1)%b],a[(d+2)%b],e-d)):0>c?a[0]-(f(a[0],a[0],a[1],a[1],-e)-a[0]):1<c?a[b]-(f(a[b],a[b],a[b-1],a[b-1],e-b)-a[b]):f(a[d?d-1:0],a[d],a[b<d+1?b:d+1],a[b<d+2?b:d+2],e-d)},Utils:{Linear:function(a,c,b){return(c-a)*b+a},Bernstein:function(a,c){var b=TWEEN.Interpolation.Utils.Factorial;return b(a)/b(c)/b(a-c)},Factorial:function(){var a=[1];return function(c){var b=1,e;if(a[c])return a[c];for(e=c;1<e;e--)b*=e;return a[c]=b}}(),CatmullRom:function(a,c,b,e,d){var a=0.5*(b-a),e=0.5*(e-c),f=
+d*d;return(2*c-2*b+a+e)*d*f+(-3*c+3*b-2*a-e)*f+a*d+c}}};
diff --git a/examples/00_hello_world.html b/examples/00_hello_world.html
index 8db88ae7..a2d76b02 100644
--- a/examples/00_hello_world.html
+++ b/examples/00_hello_world.html
@@ -15,7 +15,7 @@ <h2>00 _ hello world</h2>
 			hello world!
 		</div>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script>
 			var position;
diff --git a/examples/01_bars.html b/examples/01_bars.html
index 04669abb..2397e4e6 100644
--- a/examples/01_bars.html
+++ b/examples/01_bars.html
@@ -13,7 +13,7 @@ <h2>01 _ Bars</h2>
 			</div>
 		<div id="target"></div>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script src="js/Stats.js"></script>
 		<script>
diff --git a/examples/02_black_and_red.html b/examples/02_black_and_red.html
index 79edbab7..b0757623 100644
--- a/examples/02_black_and_red.html
+++ b/examples/02_black_and_red.html
@@ -21,7 +21,7 @@ <h2>02 _ Black and red</h2>
 			#target { position: absolute; top: 4em; right: 3em; }
 		</style>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script src="js/Stats.js"></script>
 		<script>
diff --git a/examples/03_graphs.html b/examples/03_graphs.html
index 739a2170..6dbae9ba 100644
--- a/examples/03_graphs.html
+++ b/examples/03_graphs.html
@@ -25,7 +25,7 @@ <h2>03 _ graphs</h2>
 
 		<div id="target"></div>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script>
 
diff --git a/examples/04_simplest.html b/examples/04_simplest.html
index 6414da77..02088e12 100644
--- a/examples/04_simplest.html
+++ b/examples/04_simplest.html
@@ -15,7 +15,7 @@ <h2>04 _ simplest possible example</h2>
 		<div id="target" style="position: absolute; left: 50px; top: 300px; font-size: 100px; letter-spacing: -7px; ">
 		</div>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script>
 
diff --git a/examples/05_video_and_time.html b/examples/05_video_and_time.html
index 03aec92f..8c1745ef 100644
--- a/examples/05_video_and_time.html
+++ b/examples/05_video_and_time.html
@@ -16,7 +16,7 @@ <h2>05 _ video and time</h2>
 			<video id="video" src="video/sintel.webm" width="320" height="138" autoplay></video>
 		</div>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script>
 
diff --git a/examples/06_array_interpolation.html b/examples/06_array_interpolation.html
index a7f607d0..62fd66aa 100644
--- a/examples/06_array_interpolation.html
+++ b/examples/06_array_interpolation.html
@@ -26,7 +26,7 @@ <h2>06 _ array interpolation</h2>
 
 		<div id="target"></div>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script>
 
diff --git a/examples/07_dynamic_to.html b/examples/07_dynamic_to.html
index 5a22b42f..aaa1c413 100644
--- a/examples/07_dynamic_to.html
+++ b/examples/07_dynamic_to.html
@@ -26,7 +26,7 @@ <h2>06 _ dynamic to</h2>
 
 		<div id="target"></div>
 
-		<script src="../src/Tween.js"></script>
+		<script src="../build/Tween.js"></script>
 		<script src="js/RequestAnimationFrame.js"></script>
 		<script>
 
diff --git a/src/Tween.js b/src/Tween.js
index 0a33304f..81fe21a2 100644
--- a/src/Tween.js
+++ b/src/Tween.js
@@ -16,6 +16,8 @@ var TWEEN = TWEEN || ( function () {
 
 	return {
 
+		REVISION: '6',
+
 		getAll: function () {
 
 			return _tweens;
@@ -75,17 +77,17 @@ var TWEEN = TWEEN || ( function () {
 
 TWEEN.Tween = function ( object ) {
 
-	var _object = object,
-	_valuesStart = {},
-	_valuesEnd = {},
-	_duration = 1000,
-	_delayTime = 0,
-	_startTime = null,
-	_easingFunction = TWEEN.Easing.Linear.None,
-	_interpolationFunction = TWEEN.Interpolation.Linear,
-	_chainedTween = null,
-	_onUpdateCallback = null,
-	_onCompleteCallback = null;
+	var _object = object;
+	var _valuesStart = {};
+	var _valuesEnd = {};
+	var _duration = 1000;
+	var _delayTime = 0;
+	var _startTime = null;
+	var _easingFunction = TWEEN.Easing.Linear.None;
+	var _interpolationFunction = TWEEN.Interpolation.Linear;
+	var _chainedTween = null;
+	var _onUpdateCallback = null;
+	var _onCompleteCallback = null;
 
 	this.to = function ( properties, duration ) {
 
@@ -190,23 +192,21 @@ TWEEN.Tween = function ( object ) {
 
 	this.update = function ( time ) {
 
-		var property, elapsed, value, start, end;
-
 		if ( time < _startTime ) {
 
 			return true;
 
 		}
 
-		elapsed = ( time - _startTime ) / _duration;
+		var elapsed = ( time - _startTime ) / _duration;
 		elapsed = elapsed > 1 ? 1 : elapsed;
 
-		value = _easingFunction( elapsed );
+		var value = _easingFunction( elapsed );
 
-		for ( property in _valuesStart ) {
+		for ( var property in _valuesStart ) {
 
-			start = _valuesStart[ property ];
-			end = _valuesEnd[ property ];
+			var start = _valuesStart[ property ];
+			var end = _valuesEnd[ property ];
 
 			if ( end instanceof Array ) {
 
diff --git a/utils/builder.py b/utils/builder.py
index 07d377e9..dc2a8074 100644
--- a/utils/builder.py
+++ b/utils/builder.py
@@ -1,20 +1,15 @@
-import sys
 import os
 
-output = '../build/Tween.js';
+source = '../src/Tween.js'
+build = '../build/Tween.js'
+header = '// Tween.js - http://github.com/sole/tween.js\n'
 
-os.system("java -jar compiler.jar --js ../src/Tween.js --js_output_file %s" % (output))
+os.system( 'java -jar compiler/compiler.jar --language_in=ECMASCRIPT5 --js ' + source + ' --js_output_file ' + build )
 
-# HEADER
+file = open( build, 'r' )
+contents = file.read();
+file.close()
 
-with open(os.path.join('..', 'REVISION'), 'r') as handle:
-	revision = handle.read().rstrip()
-
-string = "// tween.js r%s - http://github.com/sole/tween.js\n" % (revision)
-
-src_file = open(output,'r')
-string += src_file.read()
-
-dep_file = open(output,'w')
-dep_file.write(string)
-dep_file.close()
+file = open( build, 'w' )
+file.write( header + contents )
+file.close()
diff --git a/utils/compiler.jar b/utils/compiler.jar
deleted file mode 100644
index 4dfa5ad0..00000000
Binary files a/utils/compiler.jar and /dev/null differ
diff --git a/utils/compiler/COPYING b/utils/compiler/COPYING
new file mode 100644
index 00000000..d6456956
--- /dev/null
+++ b/utils/compiler/COPYING
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+      and distribution as defined by Sections 1 through 9 of this document.
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+
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
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+      including but not limited to software source code, documentation
+      source, and configuration files.
+
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+
+      "Work" shall mean the work of authorship, whether in Source or
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+      may provide additional or different license terms and conditions
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+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+      defend, and hold each Contributor harmless for any liability
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+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
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+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
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+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
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diff --git a/utils/compiler/README b/utils/compiler/README
new file mode 100644
index 00000000..e6d12c4a
--- /dev/null
+++ b/utils/compiler/README
@@ -0,0 +1,292 @@
+/*
+ * Copyright 2009 The Closure Compiler Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+// Contents
+//
+
+The Closure Compiler performs checking, instrumentation, and
+optimizations on JavaScript code. The purpose of this README is to
+explain how to build and run the Closure Compiler.
+
+The Closure Compiler requires Java 6 or higher.
+http://www.java.com/
+
+
+//
+// Building The Closure Compiler
+//
+
+There are three ways to get a Closure Compiler executable.
+
+1) Use one we built for you.
+
+Pre-built Closure binaries can be found at
+http://code.google.com/p/closure-compiler/downloads/list
+
+
+2) Check out the source and build it with Apache Ant.
+
+First, check out the full source tree of the Closure Compiler. There
+are instructions on how to do this at the project site.
+http://code.google.com/p/closure-compiler/source/checkout
+
+Apache Ant is a cross-platform build tool.
+http://ant.apache.org/
+
+At the root of the source tree, there is an Ant file named
+build.xml. To use it, navigate to the same directory and type the
+command
+
+ant jar
+
+This will produce a jar file called "build/compiler.jar".
+
+
+3) Check out the source and build it with Eclipse.
+
+Eclipse is a cross-platform IDE.
+http://www.eclipse.org/
+
+Under Eclipse's File menu, click "New > Project ..." and create a
+"Java Project."  You will see an options screen. Give the project a
+name, select "Create project from existing source," and choose the
+root of the checked-out source tree as the existing directory. Verify
+that you are using JRE version 6 or higher.
+
+Eclipse can use the build.xml file to discover rules. When you
+navigate to the build.xml file, you will see all the build rules in
+the "Outline" pane. Run the "jar" rule to build the compiler in
+build/compiler.jar.
+
+
+//
+// Running The Closure Compiler
+//
+
+Once you have the jar binary, running the Closure Compiler is straightforward.
+
+On the command line, type
+
+java -jar compiler.jar
+
+This starts the compiler in interactive mode. Type
+
+var x = 17 + 25;
+
+then hit "Enter", then hit "Ctrl-Z" (on Windows) or "Ctrl-D" (on Mac or Linux)
+and "Enter" again. The Compiler will respond:
+
+var x=42;
+
+The Closure Compiler has many options for reading input from a file,
+writing output to a file, checking your code, and running
+optimizations. To learn more, type
+
+java -jar compiler.jar --help
+
+You can read more detailed documentation about the many flags at
+http://code.google.com/closure/compiler/docs/gettingstarted_app.html
+
+
+//
+// Compiling Multiple Scripts
+//
+
+If you have multiple scripts, you should compile them all together with
+one compile command.
+
+java -jar compiler.jar --js=in1.js --js=in2.js ... --js_output_file=out.js
+
+The Closure Compiler will concatenate the files in the order they're
+passed at the command line.
+
+If you need to compile many, many scripts together, you may start to
+run into problems with managing dependencies between scripts. You
+should check out the Closure Library. It contains functions for
+enforcing dependencies between scripts, and a tool called calcdeps.py
+that knows how to give scripts to the Closure Compiler in the right
+order.
+
+http://code.google.com/p/closure-library/
+
+//
+// Licensing
+//
+
+Unless otherwise stated, all source files are licensed under
+the Apache License, Version 2.0.
+
+
+-----
+Code under:
+src/com/google/javascript/rhino
+test/com/google/javascript/rhino
+
+URL: http://www.mozilla.org/rhino
+Version:  1.5R3, with heavy modifications
+License:  Netscape Public License and MPL / GPL dual license
+
+Description: A partial copy of Mozilla Rhino. Mozilla Rhino is an
+implementation of JavaScript for the JVM.  The JavaScript parser and
+the parse tree data structures were extracted and modified
+significantly for use by Google's JavaScript compiler.
+
+Local Modifications: The packages have been renamespaced. All code not
+relavant to parsing has been removed. A JSDoc parser and static typing
+system have been added.
+
+
+-----
+Code in:
+lib/rhino
+
+Rhino
+URL: http://www.mozilla.org/rhino
+Version:  Trunk
+License:  Netscape Public License and MPL / GPL dual license
+
+Description: Mozilla Rhino is an implementation of JavaScript for the JVM.
+
+Local Modifications: Minor changes to parsing JSDoc that usually get pushed
+up-stream to Rhino trunk.
+
+
+-----
+Code in:
+lib/args4j.jar
+
+Args4j
+URL: https://args4j.dev.java.net/
+Version: 2.0.12
+License: MIT
+
+Description:
+args4j is a small Java class library that makes it easy to parse command line
+options/arguments in your CUI application.
+
+Local Modifications: None.
+
+
+-----
+Code in:
+lib/guava.jar
+
+Guava Libraries
+URL: http://code.google.com/p/guava-libraries/
+Version:  r08
+License: Apache License 2.0
+
+Description: Google's core Java libraries.
+
+Local Modifications: None.
+
+
+-----
+Code in:
+lib/jsr305.jar
+
+Annotations for software defect detection
+URL: http://code.google.com/p/jsr-305/
+Version: svn revision 47
+License: BSD License
+
+Description: Annotations for software defect detection.
+
+Local Modifications: None.
+
+
+-----
+Code in:
+lib/jarjar.jar
+
+Jar Jar Links
+URL: http://jarjar.googlecode.com/
+Version: 1.1
+License: Apache License 2.0
+
+Description:
+A utility for repackaging Java libraries.
+
+Local Modifications: None.
+
+
+----
+Code in:
+lib/junit.jar
+
+JUnit
+URL:  http://sourceforge.net/projects/junit/
+Version:  4.8.2
+License:  Common Public License 1.0
+
+Description: A framework for writing and running automated tests in Java.
+
+Local Modifications: None.
+
+
+---
+Code in:
+lib/protobuf-java.jar
+
+Protocol Buffers
+URL: http://code.google.com/p/protobuf/
+Version: 2.3.0
+License: New BSD License
+
+Description: Supporting libraries for protocol buffers,
+an encoding of structured data.
+
+Local Modifications: None
+
+
+---
+Code in:
+lib/ant.jar
+lib/ant-launcher.jar
+
+URL: http://ant.apache.org/bindownload.cgi
+Version: 1.8.1
+License: Apache License 2.0
+Description:
+  Ant is a Java based build tool. In theory it is kind of like "make"
+  without make's wrinkles and with the full portability of pure java code.
+
+Local Modifications: None
+
+
+---
+Code in:
+lib/json.jar
+URL: http://json.org/java/index.html
+Version: JSON version 20090211
+License: MIT license
+Description:
+JSON is a set of java files for use in transmitting data in JSON format.
+
+Local Modifications: None
+
+---
+Code in:
+tools/maven-ant-tasks-2.1.1.jar
+URL: http://maven.apache.org
+Version 2.1.1
+License: Apache License 2.0
+Description:
+  Maven Ant tasks are used to manage dependencies and to install/deploy to
+  maven repositories.
+
+Local Modifications: None
diff --git a/utils/compiler/compiler.jar b/utils/compiler/compiler.jar
new file mode 100644
index 00000000..d958a618
Binary files /dev/null and b/utils/compiler/compiler.jar differ