. Added SplDoublyLinkedList, SplStack, SplQueue classes. (Etienne)
. Added FilesystemIterator. (Marcus)
. Added GlobIterator. (Marcus)
+ . Added SplHeap, SplMinHeap, SplMaxHeap, SplPriorityQueue classes. (Etienne)
- Add the ReflectionProperty::setAccessible() method that allows non-public
property's values to be read through ::getValue(). (Derick)
- Added ability to use Traversable objects instead of plain arrays in ext/soap.