[2.0] DDC-78 - Added support for context specific information in Annotation Parser Syntax Error Exceptions.

[2.0] Added test that shows AnnotationParser only parses string literals with double quotes, wheras single quotes throw an Syntax Error. Removed debug output on failure for a proper syntax error exception.

[2.0][DDC-22] Fixed. Also cleaned up association handling. More to come: exception refactorings, proxy simplifications (single proxy class, not two).

[2.0] Small refactorings on the cache drivers. Introduced flag to control whether the cache driver should manage the cache keys since this is an advanced feature that is not always needed and can have negative side-effects (higher probability for cache slams).

[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] Fixed some known issues with inheritance, especially class table inheritance, like join columns not being selected.

[2.0] Fix for fix for testsuite ;). Need to find out why the behavior is different. sqlite versions? phpunit versions?

[2.0] Fix for test suite. It was trying to recreate association tables and they're not getting deleted. SchemaTool was trying to recreate them during some executions.

[2.0] Grammar rule fixes to prevent possibility to do key=field=identifier as a correct parseable grammar

[2.0] Fixed hydration issue with bidirectional one-to-many associations. Added more test coverage for some advanced association queries and lazy-loading.