Log Message:
databases/py-peewee: Update to 3.0.9.

3.0.9
- Add deprecation notice if passing autocommit as keyword argument to
  the Database initializer.
- Add JSONPath and "J" helpers to sqlite extension.

3.0.8
- Add support for passing cascade=True when dropping tables.
- Fix issues with backrefs and inherited foreign-keys.

3.0.7
- Add select_extend() method to extend existing SELECT-ion.
- Accept set() as iterable value type
- Add test for model/field inheritance and fix bug relating to
  recursion error when inheriting foreign-key field.
- Fix regression where consecutive calls to ModelSelect.select() with
  no parameters resulted in an empty selection.

3.0.6
- Add constraints for ON UPDATE/ON DELETE to foreign-key constraint

3.0.5
- Adds Model.index(), a short-hand method for declaring ModelIndex
  instances.

3.0.4
- Re-add a shim for PrimaryKeyField (renamed to AutoField) and log a
  deprecation warning if you try to use it

3.0.3
- Includes fix for bug where column-name to field-name translation was
  not being done when running select queries on models whose field
  name differed from the underlying column name.

3.0.2
- Fixes missing pysqlite header files, which are needed to compile
  certain C extensions.

3.0.0
- Complete rewrite of SQL AST and code-generation.
- Inclusion of new, low-level query builder APIs.
- List of backwards-incompatible changes since 2.x:

  http://docs.peewee-orm.com/en/latest/peewee/changes.html