coleifer/peewee 3.1.1 on GitHub

Fixed bug when using Model.alias() when the model defined a particular database schema.
Added SchemaManager.create_foreign_key API to simplify adding constraints when dealing with circular foreign-key relationships. Updated docs accordingly.
Improved implementation of Migrator.add_foreign_key_constraint so that it can be used with Postgresql (in addition to MySQL).
Added PickleField to the playhouse.fields module. Docs.
Fixed bug in implementation of CompressedField when using Python 3.
Added KeyValue API in playhouse.kv module. Docs.
More test cases for joining on sub-selects or common table expressions.