MappingDriverChain: the default driver wasn't called for getAllClassNames()
Improved tests
Merge pull request #272 from myclabs/ChainDriverFix

MappingDriverChain: the default driver wasn't called for getAllClassNames()
[FIX] Added the visibility in methods in the Interfaces.
Improve code on loadMetadata() to verify if class exists, avoid a later warning when calling class_parents()
Instead throws a \RuntimeException if class doesn't exists.
Improve code to fulfill coding standards.
Actions done:
- Change exception to MappingException
- Change test to use setExpectedException instead of @expectedException
- Update phpdoc of loadMetadata and fix CS
Improve CS
Merge pull request #274 from entering/load-metadata-avoid-warn-absent-class

Improve code on loadMetadata() to verify if class exists
Revert "Improve CS"

This reverts commit 54b85d57ec96536ee4f32ed5f63155ae61525935.
Revert "Actions done:"

This reverts commit b8479cb4398a56f6c41810e37bbbfcab973db962.
Revert "Improve code to fulfill coding standards."

This reverts commit 9ac67af3f09957d2a4f306af39ccf01511191c37.
Revert "Improve code on loadMetadata() to verify if class exists, avoid a later warning when calling class_parents()"

This reverts commit 68a40cc304103ac17823113d0cf555b5e957972c.
Clarify class does not exist in AbstractClassMetadataFactory comments.
Improve code to throw exception getting parents class instead of php warning
Merge pull request #275 from entering/avoid-warning-ref-class-parents

RuntimeReflectionService - throw exception instead of php warning
Merge pull request #273 from ramonornela/master

Added visibility in the methods Interfaces
Release 2.4.0-RC2
Bump dev version to 2.4.1
Release 2.4.0-RC3