Export remove function for events
Removing an event from the events Job map at job.remove(), not when any
message is emitted other than "progress"
Clear interval when job is done to avoid 100% progress event being fired continuously.
Changed redis default port to 6379 in Readme.md, closes #122
Merge pull request #216 from fhahn/patch-1

Changed redis default port to 6379 in Readme.md, closes #122
Merge pull request #214 from pilwon/master

Fixed bug in `Parallel Processing With Cluster` example code in `Readme.md`.
Avoiding crashing call to zpop when the redis server is unreachable
Merge pull request #223 from homedad/master

Avoiding crashing call to zpop when the redis server is unreachable
Merge pull request #156 from Jellyfrog/job-remove

Fixing events not firing on attempt > 1
Fixed delayed job promotion issues. Closes #110
Delaying failed jobs - fixed delay or exponential backoff, and other fixes

Support for delaying failed jobs - with fixed delay for each retry or
exponential backoff calculation.
Way to get all delayed jobs from the queue.
Fix fo delay() not saving
Fix for "undefined" showing up via console.error when jobs failed and
the error passed was a string
Honor original delay when retrying failed jobs - instead of processing
them right away
Merge remote-tracking branch 'nira/master'