[2.0] Code cleanups. Preparations for DDC-193. Fixed DDC-399, type configuration remains global for now but the irritating instance methods on the Configuration have been removed. Use Type::addType et al. Added TODOs for naming standards.

[2.0] Removed requirement to extend the Annotation base class, allowing any PHP class with an appropriate constructor to be used as an annotation.

[2.0] DDC-414 - Changed semantics of preUpdate Event to allow only changes to the entity changeset, not the internal state of the entity anymore.

[2.0] Give public access to the computed collection deletions and updates for possible use with the onFlush event.

[2.0] DDC-396 - Fixed bug with RESTRICT/NO ACTION and PHP NULL not valued as the same in Schema Foreign Key Diff

[2.0] Fix bug in detection of global Doctrine Cli Configuration finding the empty replacement configuration before the correct one.

[2.0] Added custom Entity repository, DiscriminatorColumn and DiscriminatorMap upport in AnnotationExporter

[2.0][DDC-395] Applied the provided patch of Jordi Boggiano removing some trailing whitespaces and fixing missing public keywords

[2.0] Fixed issue with AbstractFileDriver exporter that was generating files using backslashes instead of dots, preventing the other exporters to work correctly.

[2.0] Add missing Query::HINT_CUSTOM_OUTPUT_WALKER - it wasn't possible to change the output walker before without extending and overwriting one large method in Query

[2.0][DDC-92] Fixed. Patch provided by Christian Heinrich. [DDC-274] Started some method renaming. [DDC-142] Fixed (join column names and discriminator column names dont support quoting) [DDC-258] Fixed.

[2.0][DDC-389] Fixed the PHPDriver that was causing a fatal error when classes uses inheritance type join. Thanks Tiago Ferreira for report and patch.

[2.0] Fixed issue with classmetadata cache that was saving the entire inheritance on the same cacheKey.

[2.0] Fixed issue with classmetadata cache that was saving the entire inheritance on the same cacheKey.

[2.0][DDC-331] Added coverage to CTI not generating valid SQL when fetching for a parent field ona child class.

[2.0][DDC-265] Partial support to inheritanceType in AnnotationExporter. Still needs to add the discriminator column.

[2.0][DDC-265] Partial support to inheritanceType in AnnotationExporter. Still needs to add the discriminator column.

[2.0] DDC-381 - Unserialized Entity that was a proxy during serialize() will fatal when accessing methods that call _load() - A check for the existance of entity persister solves the problem.

[2.0] DDC-353 - Fix UnitOfWork::createEntity and StandardPersister::refresh() not marking created Proxy instances as MANAGED like EntityManager::getReference() does