See README.unittests for information on how to run
the tests.  [ticket:970]

dependencies on those.

- don't need dialect_impl() for Text

require mutexing, resurrects garbage collected instance
on a lazy basis for an InstanceState with pending changes.

- renamed SessionTransaction autoflush to reentrant_flush to more clearly state its purpose
- added _enable_transaction_accounting, flag for Mike Bernson which disables the whole 0.5 transaction state management; the system depends on expiry on rollback in order to function.

the list of attributes does not include any column-based
attributes.

- query() raises an informative error message if no columns
or mappers are specified.

- lazy loaders now trigger autoflush before proceeding.  This
allows expire() of a collection or scalar relation to
function properly in the context of autoflush.

- whitespace fix to new Table prefixes option

- added query_cls keyword argument to sessionmaker(); allows user-defined Query subclasses to be generated by query().
- added @attributes.on_reconstitute decorator, MapperExtension.on_reconstitute, both receieve 'on_load' attribute event allowing
non-__init__ dependent instance initialization routines.
- push memusage to the top to avoid pointless heisenbugs
- renamed '_foostate'/'_fooclass_manager' to '_sa_instance_state'/'_sa_class_manager'
- removed legacy instance ORM state accessors
- query._get() will use _remove_newly_deleted instead of expunge() on ObjectDeleted, so that transaction rollback
restores the previous state
- removed MapperExtension.get(); replaced by a user-defined Query subclass
- removed needless **kwargs from query.get()
- removed Session.get(cls, id); this is redundant against Session.query(cls).get(id)
- removed Query.load() and Session.load(); the use case for this method has never been clear, and the same functionality is available in more explicit ways

0.4 development continues at /sqlalchemy/branches/rel_0_4