anchor.diff:  *Affecting all Beats*
   
   - Make logstash output compression level configurable. {pull}630[630]
  +- Some publisher options refactoring in libbeat {pull}684[684]
  +- Move event preprocessor applying GeoIP to packetbeat {pull}772[772]
   
   *Packetbeat*
   
  
positive.code:   during concurrent logging {pull}650[650]
  - Reduce memory usage by having separate queue sizes for single events and bulk events. {pull}649[649] {issue}516[516]
  - Set default bulk_max_size value to 2048 {pull}628[628]
  
  *Packetbeat*
  
  
negative.code: ==== Bugfixes
  
  *Affecting all Beats*
  
  *Packetbeat*
  
  