Add MonadLogger instance
Add envLogger to Env class
Add Aux class for runtime settings
Remove Network.JobQueue.Settings module
Modify default auxLogger of Aux class
Replace Alert type with LogLevel from monad-logger
Fix default auxLogger implementation
Add Network.JobQueue.Logger module
Modify abort function to separate logging from it
Modify logging functions to support formatted string using text-format
Modify the signature of auxHandleFailure of Aux class
Remove auxHandleLogging from Aux class
Add liftIO to JobQueue.Action module
Pass detail to AbortError on abortion
Fix README.md for Aux class
Install double-conversion < 1 on travis-ci
Version 0.1.0