Version 4.1.0

Fix: Altered technique used for menu event dispatching through the fragment manager for greater control.
Fix: Do not dispatch menu creation event if the activity has been destroyed.
Fix: Correct potential NullPointerException when expanding an action item.
Fix: Correct potential NullPointerException when the hardware menu key was pressed in an activity that is forcing the overflow menu.
Fix: Do not set a listener on the native action bar tab wrapper unless a compatibility listener has been set.
Fix: Ensure the compatibility animation framework is always available on views even if they were previously detached from the view hierarchy.

ActionBarSherlock