Add `allowEmpty` option to \Phalcon\Mvc\Model\Validator\*
Merge pull request #2208 from maxgalbu/issue2157

criteria: fix issue #2157 and added tests
Add Phalcon\Session\Adapter\memcache and Phalcon\Session\Adapter\Libmemcached
Updated
Add Phalcon\Validation\MessageInterface
Fix #2402 issue about Tag::_displayValues
fix phalcon_update_static_property_array_multi_ce
fix phalcon_array_unshift
Fix travis build
return to 3.7.* phpunit version for BC
Fix NOTICE about he Mongo class is deprecated, please use the MongoClient class
Fix NOTICE - Mongo class is deprecated, please use the MongoClient class
Fix NOTICE - Mongo class is deprecated, please use the MongoClient class
Updatd Phalcon\Acl\Adapter\Memory::allow
Updated
Port php_splice to phalcon_array_splice from PHP 5.5
fix key lenght from 15 to 16 in issue-1919
Fix Notice in CryptTest - Only keys of sizes 16, 24 or 32 supported
Merge pull request #2418 from ovr/2402_issue

2402 issue
Fix bug #2113 #1803 #2113