Added NEXT libs and docs

lib/tweenjs-NEXT.combined.js

@@ -1561,6 +1561,15 @@ this.createjs = this.createjs||{};
 		 * @protected
 		 */
 		this._inited = false;
+
+		/**
+		 * Indicates whether the tween is currently registered with Tween.
+		 * @property _registered
+		 * @type {boolean}
+		 * @default false
+		 * @protected
+		 */
+		this._registered = false;
 
 
 		if (props) {
@@ -1738,7 +1747,7 @@ this.createjs = this.createjs||{};
 		for (var i= 0, l=tweens.length; i<l; i++) {
 			var tween = tweens[i];
 			tween._paused = true;
-			tween.target.tweenjs_count = 0;
+			tween.target&&(tween.target.tweenjs_count = 0);
 		}
 		tweens.length = 0;
 	};
@@ -1752,7 +1761,7 @@ this.createjs = this.createjs||{};
 	 * @static
 	 */
 	Tween.hasActiveTweens = function(target) {
-		if (target) { return target.tweenjs_count; }
+		if (target) { return target.tweenjs_count != null && !!target.tweenjs_count; }
 		return Tween._tweens && !!Tween._tweens.length;
 	};
 
@@ -1791,21 +1800,22 @@ this.createjs = this.createjs||{};
 	Tween._register = function(tween, value) {
 		var target = tween._target;
 		var tweens = Tween._tweens;
-		if (value) {
+		if (value && !tween._registered) {
 			// TODO: this approach might fail if a dev is using sealed objects in ES5
 			if (target) { target.tweenjs_count = target.tweenjs_count ? target.tweenjs_count+1 : 1; }
 			tweens.push(tween);
 			if (!Tween._inited && createjs.Ticker) { createjs.Ticker.addEventListener("tick", Tween); Tween._inited = true; }
-		} else {
+		} else if (!value && tween._registered) {
 			if (target) { target.tweenjs_count--; }
 			var i = tweens.length;
 			while (i--) {
 				if (tweens[i] == tween) {
 					tweens.splice(i, 1);
-					return;
+					break;
 				}
 			}
 		}
+		tween._registered = value;
 	};
 
 
@@ -1913,7 +1923,7 @@ this.createjs = this.createjs||{};
 	/**
 	 * Queues an action to pause the specified tween.
 	 * @method pause
-	 * @param {Tween} tween The tween to play. If null, it pauses this tween.
+	 * @param {Tween} tween The tween to pause. If null, it pauses this tween.
 	 * @return {Tween} This tween instance (for chaining calls)
 	 */
 	p.pause = function(tween) {
@@ -2329,6 +2339,15 @@ this.createjs = this.createjs||{};
 		 * @protected
 		 **/
 		this._useTicks = false;
+
+		/**
+		 * Indicates whether the timeline is currently registered with Tween.
+		 * @property _registered
+		 * @type {boolean}
+		 * @default false
+		 * @protected
+		 */
+		this._registered = false;
 
 
 		if (props) {
@@ -2508,8 +2527,7 @@ this.createjs = this.createjs||{};
 	 * is `false`).
 	 **/
 	p.setPosition = function(value, actionsMode) {
-		if (value < 0) { value = 0; }
-		var t = this.loop ? value%this.duration : value;
+		var t = this._calcPosition(value);
 		var end = !this.loop && value >= this.duration;
 		if (t == this._prevPos) { return end; }
 		this._prevPosition = value;
@@ -2529,7 +2547,7 @@ this.createjs = this.createjs||{};
 	 * @param {Boolean} value Indicates whether the tween should be paused (`true`) or played (`false`).
 	 **/
 	p.setPaused = function(value) {
-		this._paused = !!value;
+		this._paused = !!value; 
 		createjs.Tween._register(this, !value);
 	};
 
@@ -2589,13 +2607,25 @@ this.createjs = this.createjs||{};
 // private methods:
 	/**
 	 * @method _goto
+	 * @param {String | Number} positionOrLabel
 	 * @protected
 	 **/
 	p._goto = function(positionOrLabel) {
 		var pos = this.resolve(positionOrLabel);
 		if (pos != null) { this.setPosition(pos); }
 	};
-
+
+	/**
+	 * @method _calcPosition
+	 * @param {Number} value
+	 * @return {Number}
+	 * @protected
+	 **/
+	p._calcPosition = function(value) {
+		if (value < 0) { return 0; }
+		if (value < this.duration) { return value; }
+		return this.loop ? value%this.duration : this.duration;
+	};
 
 	createjs.Timeline = createjs.promote(Timeline, "EventDispatcher");
 
@@ -3368,6 +3398,6 @@ this.createjs = this.createjs || {};
 	 * @type String
 	 * @static
 	 **/
-	s.buildDate = /*=date*/"Thu, 12 Mar 2015 20:31:51 GMT"; // injected by build process
+	s.buildDate = /*=date*/"Wed, 27 May 2015 18:12:44 GMT"; // injected by build process
 
 })();