Minor spelling/grammar in comments
Forgot one more can_cache_declaration declaration.

The queues are still being cached because of the auto_delete=True.
mongodb transport - evaluate connection
Adds Len Buckens to AUTHORS
Adds Len Buckens to AUTHORS
Bumps version to 3.0.21 and updates Changelog
MongoDB tests must not connect to mongod
Updates Changelog
Merge branch '3.0'

Conflicts:
	README.rst
	kombu/__init__.py
	kombu/transport/mongodb.py
Adds select.poll poller
Fix the order for Consumer argument invocation in itermessages
Use unittest.mock if available.  Closes #381
Merge branch 'master' of github.com:celery/kombu
SimpleQueue removes messages from the wrong end of buffer.  Closes #380
Tests passing on py3
Tests passing on pypy
Do not attempt to use old pylibrabbitmq lib.
Django: Set custom app label for kombu.transport.django
Django: set label to kombu.transport.django
Async: fire_timers always using 1s delay