\Phalcon\DI\Injectable no longer holds null properties of all the services in \Phalcon\DI\FactoryDefault. So long as they existed, `__get()` wouldn't be called to instantiate a new object.
Variables in the \Phalcon\DI namespace and class are now camel-cased.
The \Phalcon\Validation\Messsage\Group class can now throw Validation exceptions.
Fixed a syntax typo in \Phalcon\Validation\Validator\ExclusionIn::validate().
Fixed a string typo in \Phalcon\Validation\Validator\Email::validate().
Added a missing line to \Phalcon\Validation\Validator\ExclusionIn::validate().
Corrected a parameter within \Phalcon\Validation\Validator\Email::validate().
The ArrayAccess methods in \Phalcon\Validation\Message\Group no longer force the index to be a string.
`$value` is now always set in \Phalcon\Validation::getValue().
\Phalcon\Validation::add() now returns `$this`.
Corrected a boolean typo in \Phalcon\Validation::validate().
Merge pull request #14 from SidRoberts/validation

Fixes for \Phalcon\Validation
Revert "\Phalcon\Validation"
Merge pull request #15 from scento/revert-14-validation

Revert "\Phalcon\Validation"
Revert "Revert "\Phalcon\Validation""
Merge pull request #16 from scento/revert-15-revert-14-validation

Restore "\Phalcon\Validation"
Merge pull request #13 from SidRoberts/di

\Phalcon\DI can now resolve Factory Default services
Constant naming scheme (#4)