--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/yui/yui_3.0.0b1/releasenotes/README.base	Mon Nov 23 15:14:29 2009 +0100
@@ -0,0 +1,96 @@
+3.0.0 beta 1
+
+* Config argument for init event now merged into the event facade, 
+  instead of being passed separately (available as e.cfg).
+  
+* Removed Base.create. On review, considered to be overkill.
+  Users can easily create new instances, using Base.build
+
+* Moved PluginHost down from Widget to Base, since utils and 
+  Node will also support Plugins.
+
+* PluginHost.plug and unplug now accept the plugin class as 
+  arguments [plug(pluginClass, cfg) and unplug(pluginClass)].
+
+* Split base module up into base-base and base-build.
+
+* Added lazy attribute initialization support, to improve performance.
+  
+  This also removes order dependency when processing ATTRS for a 
+  particular class.
+
+  If a get/set call is made for an uninitialized attribute A, in the 
+  getter/setter/validator or valueFns of another attribute B, A will 
+  be intiailized on the fly. 
+
+* Added ability to subscribe to on/after events through the 
+  constructor config object, e.g.:
+  
+      new MyBaseObject({ 
+         on: {
+            init: handlerFn,
+            myAttrChange: handlerFn
+	 },
+	 after: {
+	    init: handlerFn,
+	    myAttrChange: handlerFn
+	 },
+	 ...
+	 
+      });
+
+* Developers can now override the default clone behavior we use to
+  isolate default ATTRS config values, using cloneDefaultValue, e.g.:
+
+  ATTRS = {
+      myAttr : {
+      	value: AnObjectOrArrayReference
+	    cloneDefaultValue: true|false|"deep"|"shallow"
+      }
+  }
+
+  If the cloneDefaultValue property is not defined, Base will clone
+  any Arrays or Object literals which are used as default values when
+  configuring attributes for an instance, so that updates to instance 
+  values do not modify the default value.
+
+  This behavior can be over-ridden using the cloneDefaultValue property:
+
+  true, deep: 
+
+     Use Y.clone to protect the default value.
+
+  shallow:
+
+     Use Y.merge, to protect the default value.
+
+  false:
+
+     Don't clone Arrays or Object literals. The value is intended
+     to be used by reference, for example, when it points to
+     a utility object.
+
+* Base.plug and Base.unplug used to add static Plugins (default plugins
+  for a class). Replaces static PLUGINS array, allowing subclasses to 
+  easily unplug static plugins added higher up in the hierarchy.
+
+* Base adds all attributes lazily. This means attributes don't get
+  initialized until the first call to get/set, speeding up construction
+  of Base based objects.
+
+  Attributes which have setters which set some other state in the object, 
+  can configure the attribute to disable lazy initialization, by setting
+  lazyAdd:false as part of their attribute configuration, so that the setter
+  gets invoked during construction.
+
+3.0.0PR1 - Initial release
+
+Module Name: "base"
+Documentation: http://developer.yahoo.com/yui/3/base
+
+Base is designed to be a low level class from which other attribute 
+and event target based classes in the YUI library can be derived. 
+It provides a standard template for creating attribute based objects 
+across the library and provides a consistent init() and destroy() 
+sequence, by chaining initialization (initializer) and destruction 
+(destructor) methods for the class hierarcy.