Bumps version to 3.0.20
events.State: Ignore unknown events
events.State: Ignore unknown events
Last commit broke events.State pickleability
Last commit broke events.State pickleability
chord_unlock now uses default_retry_delay
chord_unlock now uses default_retry_delay
Merge pull request #1430 from dongweiming/master

Add celery completion
Merge branch 'master' of github.com:celery/celery
Cosmetics
Update CONTRIBUTORS.txt
Merge pull request #1433 from dongweiming/patch-1

Update CONTRIBUTORS.txt
Define __ne__ when __eq__
Now depends on billiard 2.7.3.29
Now depends on billiard 2.7.3.30
Makes qualname work when module already in name
Makes qualname work when module already in name
Do not have to use buffer here.  Closes #1438
Don't import resource module on Windows
Cosmetics