constructs to sqlalchemy.sql namespace, though
not part of __all__ as of yet.
- [bug] sql.false() and sql.true() compile to
0 and 1, respectively in sqlite [ticket:2368]

     used internally to resolve import cycles,
     such that the usage of __import__ is completed
     when the import of sqlalchemy or sqlalchemy.orm
     is done, thereby avoiding any usage of __import__
     after the application starts new threads,
     fixes [ticket:2279].  Also in 0.6.9.

classes, produces the _Over() construct which
in turn generates "window functions", i.e.
"<window function> OVER (PARTITION BY <partition by>,
ORDER BY <order by>)".
[ticket:1844]

  a consistent tag
- AUTHORS file

Treats the given expression as the given type when evaluating
expressions and processing result rows, but does not
affect the generation of SQL, other than an anonymous label.

to be compared to another set, typically with IN against
composite primary keys or similar.  Also accepts an
IN with multiple columns.   The "scalar select can
have only one column" error message is removed - will
rely upon the database to report problems with
col mismatch.