Handle deleted users gracefully.
Adding a test.
hide unused public methods
Fixed indentation
Merge pull request #125 from zendesk/pswadi/handle-deleted-users-null-pattern

Handle deleted users gracefully.
remove threading weirdness
remove useless indirection
job always has a project
simpler stage access
Update Airbrake dependency to v4.1.0
Added gem version for airbrake
Merge pull request #134 from zendesk/libo/update_airbrake

Update Airbrake dependency to v4.1.0
Merge pull request #135 from zendesk/grosser/multi-ploy

more cleanup
use cattr_accessor
refactor loop into until
yield owner to failed lock