Avoiding changing how Model.save() works when the model has a composite primary key
Merge pull request #471 from arrowgamer/master

Fixed issue with aggregate_rows
Merge pull request #472 from ricoboni/master

Avoiding changing how Model.save() works with a composite PK
Beefing up apsw_ext.
Example redis vtable.
Version bump.
Changelog updates.
Update the model and dependencies when migrations are run.
Cleanup caching.
Code cleanups.
Correctly handle IS NOT NULL.
fix playhouse.migrate docstring about drop_index
Merge pull request #473 from shamrin/patch-2

fix playhouse.migrate docstring about drop_index
Fix foreign keys in sqlite migrations, refs #474.
Fix ordering.
Ensure fk constraint is added, fixes #474.
Allow decorator to be used.
Ignore auto-generated indexes, fixes #475
Drop tables when finished.
Use `tuple` for composite pk value, fixes #477.