may be construed as the Python "and" keyword
- add notes to ORM tutorial for beginners that Python "and" keyword
is not to be used
fixes #3545

- changelog / version note finishing

kinds of internal column loader options within internal logging.
fixes #3539

which indicates to the ORM that a positive set of None should be
persisted as the value NULL, instead of omitting the column from
the INSERT statement.  This feature is used both as part of the
implementation for :ticket:`3514` as well as a standalone feature
available on any type.  fixes #3250
- add new documentation section illustrating the "how to force null"
 use case of #3250
- alter our change from #3514 so that the class-level flag is now
called "should_evaluate_none"; so that "evaluates_none" is now
a generative method.

to use mapper.cascade_iterator() for this purpose as it was not really
designed for that use case.  Add docs to cascade_iterator() pointing
to the recipe.  fixes #3498

:meth:`.Session.bulk_save_objects` and related bulk methods have
been scaled back to the extent that this functionality is not
currently used, e.g. checks for column default values to be
fetched after an INSERT or UPDATE statement.
fixes #3526

column that had some kind of "fetch on update" value and was not
locally present in the given object would cause an AttributeError
within the operation.
fixes #3525