0.9.0

• Upgrade to express 4.x, Closes #537
• Move job.reprocess done callback to the last, Closes #387, Closes #385
• Standardize signature of .shutdown() callback, Closes #454
• Turn off search indexes by default, Closes #412
• Improve delayed job promotion feature, Closes #533, fixes #312, closes #352
• Use a distributed redis lock to hide job promotion from user, Closes #556
• Deprecate .promote and update documentation
• Document Javascript API to query queue state, Closes #455
• Add jobEvents flag to switch off job events for memory optimization, Closes #401
• Add idle event to capture unsuccessful zpop's in between of worker get Job, should fix #538
• Add TTL for active jobs, Closes #544
• Document jobEvents queue config, Closes #557
• Bulk job create API now processes all jobs in case of intermediate errors, Closes #552
• Merge red job remove buttons and tooltips PR, Closes #566
• Add a in-memory test Kue mode, Closes #561
• Update reds package to 0.2.5
• Merge PR #594, bad redirect URL in old express versions, fixes #592
• update dependency to forked warlock repo to fix redis connection cleanup on shutdown, fixes #578
• Update job hash with the worker ID, Closes #580