anchor.diff:  
   * An index name (or pattern) is now required for destructive operations like
     deleting indices:
  -
  ++
   [source,sh]
   ---------------
   # v0.90 - delete all indices:
  
positive.code: 
  * The response format always has the index name, then the section, then the
    element name, for instance:
  
  [source,json]
  ---------------
  {
  
negative.code: * The `cluster.routing.allocation` settings (`disable_allocation`,
    `disable_new_allocation` and `disable_replica_location`) have been
    <<modules-cluster,replaced by the single setting>>:
  +
  [source,yaml]
  ---------------
  cluster.routing.allocation.enable: all|primaries|new_primaries|none
  