. Improved zend_qsort(using hybrid sorting algo) for better performance,
and also renamed zend_qsort to zend_sort. (Laruence)
. Added stable sorting algo zend_insert_sort. (Laruence)
+ . Improved zend_memnchr(using sunday algo) for better performance. (Laruence)
. Implemented the RFC `Scalar Type Decalarations v0.5`. (Anthony)
. Implemented the RFC `Group Use Declarations`. (Marcio)
. Implemented the RFC `Continue Output Buffering`. (Mike)