coleifer/peewee 2.6.4 on GitHub

Updating so some of the new APIs are available on pypi. Note that I did not draft any notes for 2.6.3, so most of those changes are included here.

#646, fixed a bug with the Cython speedups not being included in package.
#654, documented how to create models with no primary key.
#659, allow bare INSERT statements.
#674, regarding foreign key / one-to-one relationships.
#676, allow ArrayField to accept tuples in addition to lists.
#679, fix regarding unsaved relations.
#682, refactored QueryResultWrapper to allow multiple independent iterations over the same underlying result cache.
#692, fix bug with multiple joins to same table + eager loading.
#695, fix bug when connection fails while using an execution context.
#698, use correct column names with non-standard django foreign keys.
#706, return datetime.time instead of timedelta for MySQL time fields.
#712, fixed SQLite migrator regular expressions. Thanks @sroebert.

#647, #649, #650, added support for RETURNING clauses. Update, Insert and Delete queries can now be called with RETURNING to retrieve the rows that were affected. See docs.
#685, added web request hook docs.
#691, allowed arbitrary model attributes and methods to be serialized by model_to_dict(). Docs.
#696, allow model_to_dict() to introspect query for which fields to serialize.
Moved custom fields into their own playhouse module. Docs.
Added backend-agnostic truncate_date() implementation.
Added a FixedCharField which uses column type CHAR.
Added support for arbitrary PRAGMA statements to be run on new SQLite connections. Docs.
Removed berkeley_build.sh script. See instructions on my blog instead.