Rename function for action on mouseRelease to fix popup menus (resolv…

…es Issue #6)

swingutil/src/main/java/io/github/jmcleodfoss/swingutil/TreeNodePopupListener.java

@@ -51,7 +51,7 @@ public void mousePressed(final java.awt.event.MouseEvent e)
 	/**	Take action when the mouse button is released.
 	*	@param	e	The mouse event describing the button press.
 	*/
-	public void released(java.awt.event.MouseEvent e)
+	public void mouseReleased(java.awt.event.MouseEvent e)
 	{
 		if (!e.isPopupTrigger() || menu.isVisible()) {
 			doPopupCancel();