anchor.diff:  Fixed prerelease version of elasticsearch in the `deb` package to sort before GA versions
   ({pull}29000[#29000])
   
  +[float]
   === Regressions
   Fail snapshot operations early when creating or deleting a snapshot on a repository that has been
   written to by an older Elasticsearch after writing to it with a newer Elasticsearch version. ({pull}30140[#30140])
   
   Fix NPE when CumulativeSum agg encounters null value/empty bucket ({pull}29641[#29641])
  -
  -//[float]
  -//=== Regressions
   
   //[float]
   //=== Known Issues
  
positive.code: 
  * Account for gaps in data counts after job is reopened ({pull}30294[#30294])
  
  == Elasticsearch version 6.3.1
  
  === New Features
  
  === Enhancements
  
  === Bug Fixes
  
  Reduce the number of object allocations made by {security} when resolving the indices and aliases for a request ({pull}30180[#30180])
  
  === Regressions
  
  === Known Issues
  //[float]
  //=== Regressions
  
  //[float]
  //=== Known Issues
  
negative.code: 
  * <<remove-http-enabled, Removed `http.enabled` setting>> ({pull}29601[#29601])
  
  [float]
  === Deprecations
  Monitoring::
  * The `xpack.monitoring.collection.interval` setting can no longer be set to `-1`
  