[2.0][DDC-354][DDC-425] Fixed. Encapsulated SQL logging better in the DBAL. Added binding types to DBAL mapping types as well as using these binding types in the persisters. Query and NativeQuery now support PDO binding types as well as DBAL mapping types when binding parameters.

[2.0][DDC-459] Moved Doctrine\ORM\AbstractQuery to Doctrine\ORM\Query\AbstractQuery, which is compatible with Doctrine Coding Standards

[2.0] Fixed issue with Cache drivers that in some situations they were not storing the entries. Also fixed bug with queryCacheTTL that was not being considered in a Query.

[2.0] Fixed issue with DQL that was not considering input parameter 10. Also added support to retrieve the generated AST.

[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-125 - Query Hints are now included in both QueryCache and ResultCache - QueryCache now also uses firstResult and maxResults for the cache key - ResultCache was fixed to use "getSql()" instead of "getDql()"

[2.0] DDC-176 - Disallow iterate() over fetch-join collections by the means of an exception on parsing the DQL query.

[2.0][DDC-164][DDC-165] Fixed. Cleaned up ManyToManyMapping. Cleaned up identifier handling and handling of composite identifiers in some places.

DDC-126 - Make Query, NativeQuery Fluent-Interfaces for all their set Methods, renamed setExpireQueryCache() and setExpireResultCache() to expireQueryCache() and expireResultCache(). Updated UPGRADE_TO_2_0 document accordingly.

[2.0] Work on CLI: Added SchemaToolTask with preliminary support for dropping/creating the database schema. Prepared the sandbox. Adjusted build to include the sandbox.

[2.0] Fixed several referential integrity issues. Fixed critical issue with inserts being run twice on postgresql/oracle. Added support for additional tree walkers that modify the AST prior to SQL construction and started to play with it in a testcase.

[2.0] Streamlined result structures. Hydration improvements: Small overall improvements, large improvement for (joined) fetched collections (~60%). 

[2.0] More cleanups for recent lazy-loading implementation and minor object hydration improvements and cleanups. Collection refactoring part I for ticket #2352.

[2.0] Moved code between Query and AbstractQuery. Added first NativeQuery implementation. Hydration work and code movements for discriminator column usage. Started implementing Single Table Inheritance.

[2.0] Refactored SQL query building process and hydration. Hydration should now support result sets with any number of root components. Introducing ResultSetMapping that is used by hydration instead of queryComponents. This allows mapping of arbitrary SQL queries (NativeQuery).