Missing queues created using default exchange and routing key if pres…

…ent.

Adding CELERY_DEFAULT_{QUEUE,EXCHANGE}_OPTIONS to allow more flexibility
with options on AMQP queues and exchanges.

Also bump in README

Bumps version to 3.1.15 and updates Changelog

Bumps version to 3.1.14

flakes

Bumps version to 3.0.25

Set release-date for 3.1.12

Must import builtins

Sets release date for 3.1.10

Release date for 3.1.9