anchor.diff:  * <<release-notes-6.0.0-alpha2>>
   * <<release-notes-6.0.0-alpha1>>
   * <<release-notes-6.0.0-alpha1-5x>>
  -* <<release-notes-6.3.1>>
   
   --
  +
  +////
  +// To add a release, copy and paste the following text,  uncomment the relevant
  +// sections, and add a link to the new section in the list of releases at the
  +// top of the page. Note that release subheads must be floated and sections
  +// cannot be empty.
  +// TEMPLATE
  +
  +// [[release-notes-n.n.n]]
  +// == {es} n.n.n
  +
  +//[float]
  +[[breaking-n.n.n]]
  +//=== Breaking Changes
  +
  +//[float]
  +//=== Breaking Java Changes
  +
  +//[float]
  +//=== Deprecations
  +
  +//[float]
  +//=== New Features
  +
  +//[float]
  +//=== Enhancements
  +
  +//[float]
  +//=== Bug Fixes
  +
  +//[float]
  +//=== Regressions
  +
  +//[float]
  +//=== Known Issues
  +////
   
   [[release-notes-6.4.0]]
   == {es} version 6.4.0
  +
  +coming[6.4.0]
   
   //[float]
   //[[breaking-6.4.0]]
  
positive.code: This section summarizes the changes in each release.
  
  * <<release-notes-6.4.0>>
  * <<release-notes-6.3.0>>
  * <<release-notes-6.2.4>>
  * <<release-notes-6.2.3>>
  
negative.code: //[float]
  //=== Known Issues
  
  [[release-notes-6.3.1]]
  == Elasticsearch version 6.3.1
  
  coming[6.3.1]
  
  //[float]
  [[breaking-6.3.1]]
  //=== Breaking Changes
  
  //[float]
  //=== Breaking Java Changes
  
  //[float]
  //=== Deprecations
  
  //[float]
  //=== New Features
  
  //[float]
  //=== Enhancements
  
  [float]
  === Bug Fixes
  
  Reduce the number of object allocations made by {security} when resolving the indices and aliases for a request ({pull}30180[#30180])
  
  //[float]
  //=== Regressions
  
  //[float]
  //=== Known Issues
  
  [[release-notes-6.3.0]]
  == {es} version 6.3.0
  
  coming[6.3.0]
  
  [float]
  [[breaking-6.3.0]]
  