[2.0] Incorporated CLI refactorings. Added support to namespaces and unlimited depth namespaces. Dropped globalArguments for now, since they interfer in DAG implementation.

[2.0][DDC-122][DDC-97][DDC-98][DDC-147] Refactored metadata mapping drivers by removing the useless PRELOAD mode. Introduced ClassMetadataFactory#getAllMetadata. Classloader simplifications. Old classloaders deprecated. New Doctrine\Common\ClassLoader is almost the same as the previous IsolatedClassLoader.

[2.0] DDC-114 - Extend SchemaTool Drop functionality to optionally drop the complete database. Additionally a filter against all existing table is applied to avoid errors due to dropping non-existant tables. Updated Schema-Tool CLI command with optional calls --drop=database --drop=metadata but kept original --drop which defaults to "metadata". Updated documentation.

[2.0][DDC-48][DDC-47] Refactored cache drivers to allow more control over deleting, added namespacing to cache drivers and implemented clear-cache task

[2.0] DBAL cleanups (DDC-46). Proxy class improvements (DDC-19, DDC-39). Started new UPGRADE_TO document for upgrade instructions between advancing Doctrine 2 versions.

[2.0] Refactoring some common code in to the AnnotationDriver and creating PhpDriver for consistancy

[2.0] Added functionality to convert a Doctrine 1 schema to Doctrine 2 to help users with upgrading. Lots of other small bug fixes and changes.

[2.0] More work on ClassmetadataExporter and ConvertMappingTask for converting mapping information between various formats

[2.0] Some work over SchemaTool update of schema (affects directly the CLI schema-tool task on --update option.

[2.0] Refactored classloader architecture. Renamed ClassLoader => GlobalClassLoader. Introduced IsolatedClassLoader that is suitable for participating in autoload stacks. Added 2 example entity classes to the sandbox with 2 xml mappings and 2 yaml mappings. Simplified sandbox setup.

[2.0] Removed xdebug builtin support from Debug::dump(). Added run-dql CLI Task. Updated tasks to wrap Exceptions thrown and diplay nicely. Fixed bug with CLI that ws incorrectly splitting strings into an array instead of consider them raw.

[2.0] Fixed issue with RunSqlTask. Added basic support to --update in SchemaToolTask. Misses some internal implementation