Safe serialization/unserialization
Test case
Test case for #1637
Use zend_update_property for dynamic properties

Fix #1637
Phalcon\Session\Bag fixes

  * initalized => initialized
  * add initialization check to remove()
  * be less aggressive in __construct()
Merge pull request #1635 from sjinks/beanstalk-queue

Safe serialization/unserialization of Phalcon\Beanstalk\Queue
Merge pull request #1639 from sjinks/issue-1637

[1.3.0] Fix #1637
Merge pull request #1641 from sjinks/1.3.0

Fix compilation error under NTS