anchor.diff:  * Entire TinkerGraph instances can be serialized over Gryo.
   * Hadoop1 support has been dropped. Hadoop2 is now supported. Giraph 1.1.0 is now supported and Spark of Hadoop2 YARN.
   * The implementation and semantics of `GraphTraversal.group()` has changed. The previous model is deprecated and renamed to `groupV3d0()`.
  +* `Transaction.onReadWrite()` and `Transaction.onClose()` are now `ThreadLocal` settings
   
   Please see the link:https://github.com/apache/incubator-tinkerpop/blob/3.1.0-incubating/CHANGELOG.asciidoc#XXXXXXXXXXXXXXXXXXXXXXXXXXXX[changelog] for a complete list of all the modifications that are part of this release.
   
  
positive.code: 
  See link:https://issues.apache.org/jira/browse/TINKERPOP3-805[TINKERPOP3-805] for more information.
  
  <<<<<<< HEAD
  Driver Implementers
  ^^^^^^^^^^^^^^^^^^^
  
  
negative.code: If the settings are changed from a sessionless request they will now only apply to that one request.
  If the settings are changed from an in-session request they will now only apply to all future requests made in the scope of that session. 
  
  See link:https://issues.apache.org/jira/browse/TINKERPOP3-885[TINKERPOP3-885]
  
  Gremlin Process
  ^^^^^^^^^^^^^^^
  
  