- Fixed bug in CTE where ``literal_binds`` compiler argument would not
be always be correctly propagated when one CTE referred to another
aliased CTE in a statement.
Fixes #3154
- add some docs to try to explain the behavior with MySQL / TIMESTAMP.
ref #3155
fix typo in cascade documentation
Merge pull request #127 from mwhite/master

fix typo in cascade documentation
- clarify docs that contains_eager() is included in the of_type() system,
fix #2438
-Fixed bug where Postgresql JSON type was not able to persist or
otherwise render a SQL NULL column value, rather than a JSON-encoded
``'null'``.  To support this case, changes are as follows:

* The value :func:`.null` can now be specified, which will always
  result in a NULL value resulting in the statement.

* A new parameter :paramref:`.JSON.none_as_null` is added, which
  when True indicates that the Python ``None`` value should be
  peristed as SQL NULL, rather than JSON-encoded ``'null'``.

Retrival of NULL as None is also repaired for DBAPIs other than
psycopg2, namely pg8000.

fixes #3159
- take out the iterator approach here as it does not support concurrent access
DropEnumType class available from postgres dialect
Public inspector method to load enum list

Provide opportunity to get enums list via an inspector instance public
interface.
- turn off the testing reaper here, that's the source of the leaks
when we are running with pydist, and even when we are running without it
in fact...
- memusage is fine for parallel
- have python setup.py test use xdist with -q
oursql seems to handle this?  unclear, might be dependent on mysql version
- use configured test_schema here
- oursql doesn't pass this consistently, not sure what the issue is
- rewrite all the sqlite/pysqlite transaction isolation docs
- add tests for the savepoint recipe
Providing an autoload_with info automatically sets autoload to True
- rework documentation for reflection flags; also include
information regarding #3027.
- changelog, fixes #3027