Merge pull request #989 from configr/master

Fix bug of "status" option returning false for versions likes "2.12.1".
Update changes, bump version
Merge branch 'master' of github.com:mperham/sidekiq
Modern celluloid now stable for testing purposes, yay!
better handle shutdown race
Avoid calling processor during hard shutdown, fixes #997
Dont use #tap on Actors!
bump version, release